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Abbas MJ, Markel DC, Hallstrom BR, Zheng H, Charters MA. The Impact of Surgeon Volume on Unicompartmental Knee Arthroplasty Survivorship: A Michigan Arthroplasty Registry Collaborative Quality Initiative (MARCQI) Database Analysis. J Arthroplasty 2024:S0883-5403(24)00837-4. [PMID: 39147075 DOI: 10.1016/j.arth.2024.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 08/17/2024] Open
Abstract
BACKGROUND The utilization of unicompartmental knee arthroplasty (UKA) has remained low when compared to total knee arthroplasty (TKA), possibly due to higher rates of revision and reoperation. This study aimed to quantify surgeon UKA case-volumes and measure the effect of surgeon volume on early revision. We hypothesized that surgeons who have high case volumes would have lower revision rates compared to medium- and low-volume surgeons. METHODS Primary UKAs were performed between February 2012 and November 2021, and associated revisions were identified utilizing the Michigan Arthroplasty Registry Collaborative Quality Initiative (MARCQI). Surgeon information, including total cases and annual UKA volume, was collected. Case volume per year was stratified as High (≥ 35 cases per year), Medium (15 to 34 cases per year), and low (< 15 cases per year). RESULTS There were a total of 15,542 UKAs performed. Of these, 701 (4.5%) were revised, and 412 (58.8%) revisions occurred within 2 years. Of the 287 surgeons who performed an UKA in the registry, 237 (82.6%) were low-volume surgeons, 36 (12.5%) were medium-volume, and 14 (4.9%) were high-volume. High-volume surgeons were more likely to operate on older patients (P < 0.01), Medicare patients (P < 0.01), and patients who had ASA (American Society of Anesthesiologists) scores of III and IV (P < 0.01). High-volume surgeons had significantly lower 5-year revision rates compared to medium and low-volume surgeons (high: 4.3% (95% CI [confidence interval]: 3.70 to 4.90), medium: 5.2% (4.44 to 6.12), low: 7.2% (6.37 to 8.02); P < 0.001). In comparison, the 5-year revision rate for TKA in Michigan was 3.0% (95% CI: 2.90 to 3.08). CONCLUSION When UKAs were performed by high-volume surgeons in the state of Michigan, there was better survivorship when compared to low-volume and medium-volume surgeons. High-volume surgeons were more likely to perform UKA on older patients, Medicare patients, and patients who had ASA scores of III and IV. The revision rate for the high-volume surgeons still exceeded the 5-year revision rate for total knee arthroplasty in Michigan.
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Affiliation(s)
- Muhammad J Abbas
- Henry Ford Hospital, Department of Orthopaedic Surgery, 2799 W. Grand Blvd, Detroit, MI, 48202.
| | - David C Markel
- Ascension-Providence Hospital Department of Orthopaedic Surgery, Southfield, Michigan
| | - Brian R Hallstrom
- University of Michigan Department of Orthopaedic Surgery, Ann Arbor, Michigan; MARCQI Coordinating center, Ann Arbor, Michigan
| | | | - Michael A Charters
- Henry Ford Hospital, Department of Orthopaedic Surgery, 2799 W. Grand Blvd, Detroit, MI, 48202
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Lee SH, Labott JR, Perico DA, Guarin Perez SF, Sierra RJ. Femoral Coronal Malalignment is Associated With Failure in Mobile-Bearing Medial Unicompartmental Knee Arthroplasty. J Arthroplasty 2024; 39:S59-S64. [PMID: 38604276 DOI: 10.1016/j.arth.2024.03.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024] Open
Abstract
BACKGROUND Femur-first (FF) technique for mobile-bearing medial unicompartmental knee arthroplasty (UKA) has been described as an alternative to tibia-first (TF) technique. The aim of this study was to compare the radiographic results in UKAs using FF or TF techniques and their influence on failure rates. METHODS We retrospectively reviewed 288 UKAs with a minimum 2-year follow-up. There were 147 knees in the TF and 141 knees in the FF cohorts. Alignment parameters and overhang were assessed as outliers and far outliers. The mean follow-up was 6 years (range, 2 to 16), the mean age was 63 years (range, 27 to 92), and 45% of patients were women. Univariate and multivariate statistical analyses were carried out with Cox regression models. RESULTS There were 13 and 6 revisions in the TF and FF cohorts, respectively. The FF had lower rates of femoral coronal alignment (FCA) or femoral sagittal alignment outliers compared to the TF (5.7% versus 19%, P = .011). Tibial coronal alignment and tibial sagittal alignment did not significantly differ between the techniques (22.7% in FF versus 29.9% in TF, P = .119). Overhang outliers did not differ significantly between the groups. Younger age was associated with a higher revision rate (P = .006), while FF versus TF, sex, body mass index, and postoperative mechanical axis did not show statistically significant associations. In multivariate analysis, FCA outliers and younger age were significantly associated with revision. CONCLUSIONS The FF technique in mobile-bearing UKA resulted in fewer FCA outliers compared to TF. Despite improved knee alignment with the FF technique, FCA outliers and younger age were associated with a higher revision rate, independent of technique.
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Affiliation(s)
- Sheng-Hsun Lee
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota; Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Josh R Labott
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | | | | | - Rafael J Sierra
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
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Karayiannis P, Cassidy R, Dobie I, Beverland D. Long term follow up of 257 consecutive cementless Oxford medial compartment knee arthroplasties at a non-designer centre. Knee 2024; 49:201-209. [PMID: 39043015 DOI: 10.1016/j.knee.2024.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 06/04/2024] [Accepted: 07/02/2024] [Indexed: 07/25/2024]
Abstract
AIMS This study aimed to review the survivorship, indication for revision and patient reported outcomes for 257 consecutive Oxford cementless unicompartmental knee arthroplasties (OUKA's) in 238 patients at 12-14 years post-operatively. METHODS Patients underwent surgery between April 2008 and October 2010 by two non-design surgeons including their learning curve. The 5-year clinical and radiological outcomes have already been reported. Oxford knee scores (OKS) were recorded at 1, 5 and 12-14 years with delayed review a result of the COVID-19 pandemic. Revision indication and imaging were reviewed. RESULTS Revision was required in 28 OUKA's (10.9%) with a 10-year cumulative survival of 93.0%, reducing to 78.8% at 14 years. 59 patients had died prior to this review and 24 were not contactable. Those not contactable had electronic records reviewed to ensure they did not have a revision elsewhere. Half of the revisions were for progression of lateral compartment arthritis (14/28). Four of 6 cases with a full revision for polyethylene wear may have benefited from a bearing exchange instead. OKSs in non-revised patients were good (median score 38, IQR 30-44) with no significant deterioration noted from 5 to 12-14 years. CONCLUSIONS Cementless OUKA in this series had a long-term survival rate comparable to other OUKA's outside of the designer centre. OKSs remain good for those patients not revised. Progression of lateral compartment arthritis was the primary reason for revision with no revisions for component loosening or bearing spinout. Ideally UKA patients who experience problems should be under the care of revisions surgeons who perform UKA. Improving patient selection and understanding of the pathophysiology of lateral disease progression, remain crucial to improve the long-term survivorship of OUKA.
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Affiliation(s)
- Paul Karayiannis
- Musgrave Park Hospital, Stockman's Lane, Belfast BT9 7JB, Northern Ireland, United Kingdom.
| | - Roslyn Cassidy
- Musgrave Park Hospital, Stockman's Lane, Belfast BT9 7JB, Northern Ireland, United Kingdom.
| | - Ian Dobie
- Musgrave Park Hospital, Stockman's Lane, Belfast BT9 7JB, Northern Ireland, United Kingdom.
| | - David Beverland
- Primary Joint Unit, Musgrave Park Hospital, Stockman's Lane, Belfast BT97JB, Northern Ireland, United Kingdom.
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Magruder ML, McClure T, Marchand K, Mont MA, Marchand RC. Robotic-arm-assisted conversion of unicompartmental knee arthroplasty to total knee arthroplasty. J Orthop 2024; 52:119-123. [PMID: 39035220 PMCID: PMC11258387 DOI: 10.1016/j.jor.2024.03.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 07/23/2024] Open
Abstract
Introduction The purpose of this study was to describe a novel robotic-arm-assisted UKA to TKA conversion technique and evaluate the patient reported and clinical outcomes in these patients. Methods A retrospective review between 2017 and 2022 was conducted of patients that underwent robotic-arm-assisted UKA to TKA conversion. Charts were reviewed for patient demographics, indications for conversion from UKA to TKA, operative technique, implants used, postoperative complications, and patient-reported outcome measures (PROMs). The surgical technique resembles that of primary TKA, with the major exception of registering the robotic arm with retained UKA implants and removing the implants only when verification is complete. There were 44 robotic-arm-assisted UKAs in 41 patients were included in the study. Indications for UKA conversion to TKA included: 33 patients who had osteoarthritis progression (75%), 7 aseptic loosening (16%), 2 unspecified pain (4.5%), 1 polyethylene wear (2.3%), and 1 prosthetic joint infection (2.3%). Uncemented cruciate-retaining (CR) implants were used in 38 of the 44 robotic-arm-assisted TKAs (86.5%). The other six utilized cemented implants: four CR femurs (9.1%), six tibial baseplates (13.6%), four tibial stems (9.1%), and four medial tibial augments (9.1%). Results The PROMs significantly improved at 1-year follow-up, with the average KOOS JR score increasing from 48.1 to 68.7 (P < 0.001), and the r-WOMAC score decreasing from 25.7 to 10.6 (P = 0.003). Two patients developed prosthetic joint infections (4.5%), one developed aseptic loosening of the femoral component (2.3%), and one developed a superficial surgical site infection requiring superficial irrigation and debridement (2.3%). Overall survivorship was 93.18% at 1.8 years, and aseptic survivorship was 97.73%. Conclusion Robotic-arm-assisted UKA to TKA conversion exhibited improved patient-reported outcomes and low revision and complication rates. Improved implant placement achieved with robotic-arm-assistance may improve the functional and clinical outcomes following these surgeries.
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Affiliation(s)
- Matthew L. Magruder
- Department of Orthopaedic Surgery, Maimonides Medical Center, Brooklyn, NY, USA
| | - Tanner McClure
- Ortho Rhode Island, Department of Orthopaedic Surgery, Warwick, RI, USA
| | - Kevin Marchand
- Ortho Rhode Island, Department of Orthopaedic Surgery, Warwick, RI, USA
| | - Michael A. Mont
- The Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
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Kwon SC, Jung HJ, Lee JH, Hyun JT, Hwang JH, Kim JI. Robotic-assisted medial unicompartmental knee arthroplasty restored prearthritic alignment and led to superior functional outcomes compared with conventional techniques. Knee Surg Sports Traumatol Arthrosc 2024. [PMID: 38796719 DOI: 10.1002/ksa.12278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/12/2024] [Accepted: 05/13/2024] [Indexed: 05/28/2024]
Abstract
PURPOSE Robotic-assisted medial unicompartmental knee arthroplasty (UKA) can ensure precise preoperative planning, minimise soft tissue damage and restore native coronal alignment. However, few studies have investigated how these advantages translate into differences in early postoperative outcomes. This study aimed to compare differences in early outcomes between conventional UKA (C-UKA) and robotic-assisted UKA (R-UKA). METHODS This retrospective study investigated two groups of patients who underwent medial UKA: C-UKA group (n = 35) and R-UKA group (n = 35). We assessed (1) serum indicators (hemoglobin, creatine kinase and C-reactive protein) and pain visual analogue scale (VAS) at postoperative days (PODs) 1, 2, 4 and 6; (2) radiologic parameters including joint line height change and arithmetic and mechanical hip-knee-ankle angle (aHKA and mHKA); (3) patient-reported outcomes including Knee Society Scores, Western Ontario and Mcmaster Universities Arthritis Index (WOMAC) and Forgotten Joint Score-12 (FJS-12) at 1-year follow-up. RESULTS Despite similar serum indicator results, pain VAS was lower in the R-UKA group than in the C-UKA group at PODs 2 (2.5 ± 1.3 vs. 3.6 ± 1.2, p = 0.02), 4 (2.4 ± 0.9 vs. 3.3 ± 1.0, p = 0.03) and 6 (1.9 ± 1.1 vs. 3.1 ± 1.1, p < 0.01). The joint line height change was significantly lower in the R-UKA group than in the C-UKA group (0.9 mm ± 0.6 mm vs. 2.0 mm ± 1.3 mm, p = 0.02). The equivalence test for preoperative aHKA and postoperative mHKA revealed equivalence in only the R-UKA group (p < 0.01). The R-UKA group showed better WOMAC and FJS-12 compared to C-UKA group at 1-year follow-up. CONCLUSION R-UKA led to lower pain VAS in the early postoperative period compared with C-UKA. Additionally, R-UKA effectively restored the joint line and prearthritic lower limb alignment, resulting in superior functional outcomes at 1-year follow-up compared with C-UKA. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Seung Cheol Kwon
- Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Ho Jung Jung
- Department of Orthopaedic Surgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Jong Hwa Lee
- Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Jin Tak Hyun
- Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Ji Hyo Hwang
- Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Joong Il Kim
- Department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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Song K, Qi L, Mu Z, Sun H, Zhai S, Liu D, Li S, Luo Y, Liu P. Health-related quality of life after total knee arthroplasty and unicompartmental knee arthroplasty for unicompartmental osteoarthritis: A systematic review and meta-analysis. J Orthop Surg (Hong Kong) 2024; 32:10225536241256245. [PMID: 38763777 DOI: 10.1177/10225536241256245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/21/2024] Open
Abstract
BACKGROUND While previous research has demonstrated potential advantages of unicompartmental knee arthroplasty (UKA) over total knee arthroplasty (TKA), particularly in terms of clinical outcomes such as function and pain relief, the specific impact on health-related quality of life (HRQOL) remains unclear. This systematic review and meta-analysis aim to address this gap by comparing HRQOL outcomes between UKA and TKA, providing valuable insights for clinical decision-making. METHODS We conducted a literature search in the PubMed, Embase, Cochrane Controlled Register of Trials (CENTRAL), and Web of Science databases up to July 15, 2023. Eligible studies assessed HRQOL using EQ-5D, SF-36, or SF-12 and were assessed for methodological quality using the Newcastle-Ottawa Scale (NOS). RESULTS Seven eligible studies were included, comprising a total of 64,585 patients with 35,809 undergoing TKA and 28,776 undergoing UKA. Patient age ranged from 52.0 to 67.7 years with an average BMI ranging from 27.2 to 31.0 kg/m2. Follow-up periods ranged from 6 months to 10 years. Five studies (63,829 patients) that evaluated HRQOL using EQ-5D showed significantly better outcomes for UKA compared to TKA (MD -0.04, 95% CI -0.05 to -0.02). Two studies (756 patients) that evaluated HRQOL using SF-36 showed no significant difference between TKA and UKA. Five studies (63,286 patients) that evaluated functional outcomes using Oxford Knee Score (OKS) showed significantly better functional scores for UKA compared to TKA (MD -1.29, 95% CI -1.86 to -0.72). Four studies (24,570 patients) that reported patient satisfaction showed no statistically significant difference between TKA and UKA (MD 0.97, 95% CI 0.90 to 1.05). Further subgroup analysis did not affect the conclusions. CONCLUSIONS Our meta-analysis suggests that UKA is associated with better HRQOL and knee function, as well as similar patient satisfaction, compared to TKA for patients with unicompartmental osteoarthritis.
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Affiliation(s)
- Ke Song
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, PR China
- Qilu Hospital of Shandong University Dezhou Hospital (Dezhou People's Hospital), Dezhou, PR China
| | - Liping Qi
- Qilu Hospital of Shandong University Dezhou Hospital (Dezhou People's Hospital), Dezhou, PR China
| | - Zongyou Mu
- Qilu Hospital of Shandong University Dezhou Hospital (Dezhou People's Hospital), Dezhou, PR China
| | - Houyi Sun
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, PR China
| | - Shenhao Zhai
- Qilu Hospital of Shandong University Dezhou Hospital (Dezhou People's Hospital), Dezhou, PR China
| | - Dehua Liu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, PR China
| | - Shihao Li
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, PR China
| | - Yange Luo
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, PR China
| | - Peilai Liu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, PR China
- Qilu Hospital of Shandong University Dezhou Hospital (Dezhou People's Hospital), Dezhou, PR China
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Hung KT, Chen CC, Lin YC, Lee SH, Hu CC, Chang YH, Hsieh PH, Shih HN, Chang CH. Survivorship of the fixed-bearing medial unicompartmental knee arthroplasty: mean 14-year follow-up in a single medical center. BMC Musculoskelet Disord 2024; 25:283. [PMID: 38609884 PMCID: PMC11010285 DOI: 10.1186/s12891-024-07378-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND This study aimed to report the long-term survival of fixed-bearing medial unicompartmental knee arthroplasty (UKA) with a mean of 14-year follow-up, and to determine possible risk factors of failure. METHODS We retrospectively evaluated 337 fixed-bearing medial UKAs implanted between 2003 and 2014. Demographic and radiographic parameters were measured, including pre-operative and post-operative anatomical femorotibial angle (aFTA), posterior tibial slope (PTS), and anatomical medial proximal tibial angle (aMPTA). Multivariate logistic regression analysis was applied to figure out risk factors. RESULTS The mean follow-up time was 14.0 years. There were 32 failures categorized into implant loosening (n = 11), osteoarthritis progression (n = 7), insert wear (n = 7), infection (n = 4), and periprosthetic fracture (n = 3). Cumulative survival was 91.6% at 10 years and 90.0% at 15 years. No statistically significant parameters were found between the overall survival and failure groups. Age and hypertension were significant factors of implant loosening with odds ratio (OR) 0.909 (p = 0.02) and 0.179 (p = 0.04) respectively. In the insert wear group, post-operative aFTA and correction of PTS showed significance with OR 0.363 (p = 0.02) and 0.415 (p = 0.03) respectively. Post-operative aMPTA was a significant factor of periprosthetic fracture with OR 0.680 (p < 0.05). CONCLUSIONS The fixed-bearing medial UKA provides successful long-term survivorship. Tibial component loosening is the major cause of failure. Older age and hypertension were factors with decreased risk of implant loosening.
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Affiliation(s)
- Kung-Tseng Hung
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Chieh Chen
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Chih Lin
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Sheng-Hsun Lee
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Chien Hu
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Han Chang
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Pang-Hsin Hsieh
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hsin-Nung Shih
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan
- Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Hsiang Chang
- Department of Orthopaedic Surgery, Linkou Chang Gung Memorial Hospital, No. 5, Fuxing St., Guishan Dist, Taoyuan, Taiwan.
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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Lu H, Yu J, Hong H. Effects of an enhanced recovery after surgery nursing programme on surgical site wound infection and postoperative complications in patients undergoing total knee arthroplasty: A meta-analysis. Int Wound J 2024; 21:e14485. [PMID: 37973530 PMCID: PMC10898380 DOI: 10.1111/iwj.14485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/18/2023] [Accepted: 10/22/2023] [Indexed: 11/19/2023] Open
Abstract
This meta-analysis aimed to investigate the effects of the enhanced recovery after surgery (ERAS) nursing program on surgical wound infection (SWI) and postoperative complications in patients undergoing total knee arthroplasty (TKA). The PubMed, Web of Science, Cochrane Library, Embase, China National Knowledge Infrastructure and Wanfang databases were searched from the date of establishment of the database until August 2023 for randomised controlled trials (RCTs) that assessed the effects of the ERAS nursing program on SWI and postoperative complications in patients undergoing TKA. The literature was screened, data were extracted by two independent investigators, and the literature quality was assessed using the methods recommended by the Cochrane Collaboration. Data analysis was performed using Stata 17.0 software. Nineteen RCTs with 1580 patients were included in the study. The meta-analysis results showed that the rates of SWI (odds ratio [OR] = 0.19, 95% confidence interval [CI]: 0.10-0.37, p < 0.001) and postoperative complications (OR = 0.18, 95% CI: 0.12-0.25, p < 0.001) were significantly lower in the ERAS intervention group than those in the control group. Therefore, ERAS intervention after TKA can significantly reduce the occurrence of SWI and postoperative complications. It has a remarkable rehabilitation effect and can be widely used in clinical settings.
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Affiliation(s)
- Haiying Lu
- Department of EmergencyChun'an County Traditional Chinese Medicine HospitalHangzhouChina
| | - Jinjiao Yu
- Department of Orthopedics and TraumatologyChun'an County Traditional Chinese Medicine HospitalHangzhouChina
| | - Huiqin Hong
- Department of Acupuncture and MoxibustionChun'an County Traditional Chinese Medicine HospitalHangzhouChina
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Watrinet J, Blum P, Maier M, Klingbeil S, Regenbogen S, Augat P, Schipp R, Reng W. Undersizing of the tibial component in Oxford unicompartmental knee arthroplasty (UKA) increases the risk of periprosthetic fractures. Arch Orthop Trauma Surg 2024; 144:1353-1359. [PMID: 38214714 DOI: 10.1007/s00402-023-05142-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 11/11/2023] [Indexed: 01/13/2024]
Abstract
INTRODUCTION Tibial periprosthetic fractures (TPF) after unicompartmental knee arthroplasty (UKA) are a rare condition that affects about 1% of cases. Known risk factors include age, sex, body mass index (BMI), and bone density, as well as surgical technique and prosthesis design. The purpose of the study was to determine if undersizing of the tibial component in relation to the femoral component increases the risk of tibial periprosthetic fractures. MATERIAL AND METHODS Over a 6-year-period 1542 patients with cemented (n = 363) and uncemented (n = 1179) medial UKA were retrospectively evaluated. Tibial periprosthetic fractures were identified and classified, and epidemiologic data were documented at follow-up. Undersizing was defined as a smaller tibial component compared to the femoral implant. The association of potential risk factors for TPF with the incidence of TPF was investigated with binominal logistic regression. RESULTS Fourteen patients (0.9%) suffered from TPF at a median of 1 month after surgery. The mean follow-up period was 5.9 ± 1.7 years. Fractures were more common in cases with undersized tibial components [odds ratio (OR) 3.2, p < 0.05]. Furthermore, older age (OR 1.1, p < 0.05) and female sex (OR 6.5, p < 0.05) were identified as significant risk factors, while BMI (p = 0.8) and cemented implantation (p = 0.2) had no effect on fracture rate. Revision surgery included open reduction and internal fixation or conversion to total knee arthroplasty. CONCLUSIONS Undersizing of implant sizes in UKA increases the risk for TPF especially in patients with small tibial implants. Therefore, mismatched implants should be avoided for UKA particularly when risk factors like obesity, older age, or female gender are present. Tibial periprosthetic fractures were successfully treated by open reduction and internal fixation or conversion to total knee arthroplasty.
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Affiliation(s)
- Julius Watrinet
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany.
- Department Trauma Surgery, BG Unfallklinik Murnau, Prof. Küntscher Str. 8, 82418, Murnau, Germany.
| | - Philipp Blum
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany
- Department Trauma Surgery, BG Unfallklinik Murnau, Prof. Küntscher Str. 8, 82418, Murnau, Germany
| | - Michael Maier
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany
| | - Steffen Klingbeil
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany
| | - Stephan Regenbogen
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany
- Department Trauma Surgery, BG Unfallklinik Murnau, Prof. Küntscher Str. 8, 82418, Murnau, Germany
| | - Peter Augat
- Institute Institute for Biomechanics, BG Unfallklinik Murnau, Prof. Küntscher Str. 8, 82418, Murnau, Germany
- Institute for Biomechanics, Paracelsus Medical University, Strubergasse 21, 5020, Salzburg, Austria
| | - Rolf Schipp
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany
| | - Wolfgang Reng
- Endogap Joint Replacement Institute, Auenstraße 7, 82467, Garmisch-Partenkirchen, Germany
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10
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Montilla FJ, Payo-Ollero J, Serrano-Toledano D, Del Río-Arteaga M, Ribera J, Muela R. Unicompartmental knee arthroplasties: does the type of tibial component selected influence implant survival? Arch Orthop Trauma Surg 2024; 144:347-355. [PMID: 37743356 DOI: 10.1007/s00402-023-05055-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 09/02/2023] [Indexed: 09/26/2023]
Abstract
INTRODUCTION Few information has been published on the survival of unicompartmental knee arthroplasty (UKA) and fixed-bearing tibial components. The aim of this study is to analyze if UKA survival varies according to UKA model used and to analyze the possible risk factors for UKA revision. MATERIALS AND METHODS A retrospective study analyzing 301 UKAs (ACCURIS, all-polyethylene tibial component, 152; Triathlon PKR, metal-backed tibial component, 149) was performed. Demographic parameters as well as implant survival and cause of prosthetic revision were analyzed. The Kaplan-Meier survival analysis, the log-rank test and the Cox multiple regression were used for the analysis. RESULTS Average follow-up was 8.1 ± 3.08-years. Average age was 68.1 ± 8.6-years; 70.4% of subjects were women. The ACCURIS UKA group had a UKA revision rate higher compared to the Triathlon PKR group (16/152, 10.6% vs 5/149, 3.4%, respectively; p < 0.001). The main cause of prosthetic revision was aseptic loosening (5/21, 23.8%). All aseptic loosening cases and tibial component collapse were reported with the ACCURIS UKA group. Overall UKA survival was 98.01% (95% CI 95.62-99.1) at 1-year, 94.27% (95% CI 90.95-96.4) at 5-years and 92.38% (95% CI 88.48-94.99) at 10-years' follow-up. There were no differences in the Kaplan-Meier survival curves regarding operated side or affected tibiofemoral compartment (log-rank test = 0.614 and 0.763, respectively). However, Kaplan-Meier survival curve according to UKA model used was different (log-rank test = 0.033). The metal-backed component appeared to be a protector factor for UKA revision when adjusted for age, sex, operated side, and affected tibiofemoral compartment (Hazard Ratio 0.32, p = 0.031). CONCLUSION Fixed-bearing UKAs showed excellent mid- and long-term survival rates. Aseptic loosening is the main cause of implant failure. PKR group (metal-backed component) seem to be a protector factor to UKA revision when it was compared with ACCURIS UKA group (all-polyethylene tibial component).
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Affiliation(s)
- Francisco Javier Montilla
- Clínica COT, C/ Juan Ramón Jiménez 29, 41011, Seville, Spain
- Orthopedics and Trauma Surgery Department, Viamed Santa Ángela de la Cruz Hospital, Av. de Jerez, 59, 41014, Seville, Spain
| | - Jesús Payo-Ollero
- Clínica COT, C/ Juan Ramón Jiménez 29, 41011, Seville, Spain.
- Orthopedics and Trauma Surgery Department, Viamed Santa Ángela de la Cruz Hospital, Av. de Jerez, 59, 41014, Seville, Spain.
| | - David Serrano-Toledano
- Clínica COT, C/ Juan Ramón Jiménez 29, 41011, Seville, Spain
- Orthopedics and Trauma Surgery Department, Viamed Santa Ángela de la Cruz Hospital, Av. de Jerez, 59, 41014, Seville, Spain
| | - Marta Del Río-Arteaga
- Clínica COT, C/ Juan Ramón Jiménez 29, 41011, Seville, Spain
- Orthopedics and Trauma Surgery Department, Viamed Santa Ángela de la Cruz Hospital, Av. de Jerez, 59, 41014, Seville, Spain
| | - Juan Ribera
- Clínica COT, C/ Juan Ramón Jiménez 29, 41011, Seville, Spain
- Orthopedics and Trauma Surgery Department, Viamed Santa Ángela de la Cruz Hospital, Av. de Jerez, 59, 41014, Seville, Spain
| | - Rafael Muela
- Clínica COT, C/ Juan Ramón Jiménez 29, 41011, Seville, Spain
- Orthopedics and Trauma Surgery Department, Viamed Santa Ángela de la Cruz Hospital, Av. de Jerez, 59, 41014, Seville, Spain
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11
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Tanaka A, Hiranaka T, Fujishiro T, Koide M, Okamoto K. Tibial Lateral Condyle Fracture After Cementless Oxford Unicompartmental Knee Arthroplasty (UKA): A Report of Four Cases. Cureus 2024; 16:e53228. [PMID: 38425608 PMCID: PMC10902739 DOI: 10.7759/cureus.53228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2024] [Indexed: 03/02/2024] Open
Abstract
Cementless unicompartmental knee arthroplasty (UKA) has a lower rate of radiolucency in postoperative follow-up than cemented UKA. However, the rate of tibial plateau fracture, one of the complications, has been reported to be higher in cementless UKA than in cemented UKA. We report four cases of postoperative tibial lateral condyle fractures after cementless Oxford UKA. Four patients underwent cementless Oxford UKA. Immediate postoperative radiography and CT showed no fracture lines. At five to six weeks postoperatively, MRI showed a fracture line from the intersection of the longitudinal and transverse tibial osteotomies through the lateral pinhole to the end of the lateral tibial diaphysis. At three months, bone union was observed without surgical treatments. Lateral tibial fracture after cementless Oxford UKA has a good clinical course without the need for surgical intervention. Medial fractures should thus be more actively prevented. MRI is useful for less symptomatic tibial lateral condyle fractures.
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Affiliation(s)
- Atsuki Tanaka
- Orthopaedic Surgery and Joint Surgery Centre, Takatsuki General Hospital, Takatsuki, JPN
| | - Takafumi Hiranaka
- Orthopaedic Surgery and Joint Surgery Centre, Takatsuki General Hospital, Takatsuki, JPN
| | - Takaaki Fujishiro
- Orthopaedic Surgery and Joint Surgery Centre, Takatsuki General Hospital, Takatsuki, JPN
| | - Motoki Koide
- Orthopaedic Surgery and Joint Surgery Centre, Takatsuki General Hospital, Takatsuki, JPN
| | - Koji Okamoto
- Orthopaedic Surgery and Joint Surgery Centre, Takatsuki General Hospital, Takatsuki, JPN
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12
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Sang W, Qiu H, Xu Y, Pan Y, Ma J, Zhu L. Malposition is main cause of failure of Oxford mobile-bearing medial unicompartmental knee arthroplasty. Bone Jt Open 2023; 4:914-922. [PMID: 38035610 PMCID: PMC10689062 DOI: 10.1302/2633-1462.412.bjo-2023-0135.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2023] Open
Abstract
Aims Unicompartmental knee arthroplasty (UKA) is the preferred treatment for anterior medial knee osteoarthritis (OA) owing to the rapid postoperative recovery. However, the risk factors for UKA failure remain controversial. Methods The clinical data of Oxford mobile-bearing UKAs performed between 2011 and 2017 with a minimum follow-up of five years were retrospectively analyzed. Demographic, surgical, and follow-up data were collected. The Cox proportional hazards model was used to identify the risk factors that contribute to UKA failure. Kaplan-Meier survival was used to compare the effect of the prosthesis position on UKA survival. Results A total of 407 patients who underwent UKA were included in the study. The mean age of patients was 61.8 years, and the mean follow-up period of the patients was 91.7 months. The mean Knee Society Score (KSS) preoperatively and at the last follow-up were 64.2 and 89.7, respectively (p = 0.001). Overall, 28 patients (6.9%) with UKA underwent revision due to prosthesis loosening (16 patients), dislocation (eight patients), and persistent pain (four patients). Cox proportional hazards model analysis identified malposition of the prostheses as a high-risk factor for UKA failure (p = 0.007). Kaplan-Meier analysis revealed that the five-year survival rate of the group with malposition was 85.1%, which was significantly lower than that of the group with normal position (96.2%; p < 0.001). Conclusion UKA constitutes an effective method for treating anteromedial knee OA, with an excellent five-year survival rate. Aseptic loosening caused by prosthesis malposition was identified as the main cause of UKA failure. Surgeons should pay close attention to prevent the potential occurrence of this problem.
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Affiliation(s)
- Weilin Sang
- Department of Joint Surgery, Shanghai General Hospital, Shanghai, China
- Department of Orthopaedics, Yiliang People’s Hospital, Yunnan, China
| | - Hongjiu Qiu
- Department of Orthopaedics, Yiliang People’s Hospital, Yunnan, China
| | - Ying Xu
- Shanghai International Medical Center, Shanghai, China
| | - Yuqin Pan
- Department of Surgery, Shanghai General Hospital, Shanghai, China
| | - Jinzhong Ma
- Department of Joint Surgery, Shanghai General Hospital, Shanghai, China
| | - Libo Zhu
- Department of Joint Surgery, Shanghai General Hospital, Shanghai, China
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13
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Suh DK, Park JG, Kim J, Suh DW, Han SB. Functional improvement of unicompartmental knee arthroplasty compared with total knee arthroplasty for subchondral insufficiency fracture of the knee. Sci Rep 2023; 13:20041. [PMID: 37973844 PMCID: PMC10654733 DOI: 10.1038/s41598-023-45748-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 10/23/2023] [Indexed: 11/19/2023] Open
Abstract
Subchondral insufficiency fracture of the knee (SIFK) causes acute knee pain in adults and often requires surgical management. Unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) are the two most common surgical treatments for SIFK. While both UKA and TKA have their advantages, there is no consensus for SIFK localized on the medial compartment. We hypothesized that patients with SIFK treated with UKA would show superior patient-reported outcomes compared to those who underwent TKA. A total of 90 patients with SIFK located medially were included in the TKA (n = 45) and UKA (n = 45) groups. Size of SIFK lesions were measured on MR images. Patient reported outcomes in the form of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Hospital Special Surgery (HSS) scores, and Knee Society Scores (KSS) were assessed preoperatively, postoperative 6, 12 months, and at the final follow-up. There were no differences in the size of the SIFK lesion between two groups. At 6 months, WOMAC score was better in the UKA group than the TKA group (p < .01). Both groups had a significant improvement in WOMAC, HSS, and KSS scores at the final follow-up compared to preoperative scores. The UKA group had better range of motion of the knee preoperatively and postoperatively than the TKA group (p < .01 and p < .01). UKA group showed a higher relative risk than the TKA group in terms of complications (RR = 3.0) but with no statistical significance (P = 0.31). Unicompartmental arthroplasty and total joint arthroplasty can produce successful outcomes in patients with SIFK with proper patient selection, regardless of the size of SIFK lesion.
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Affiliation(s)
- Dae Keun Suh
- Department of Orthopaedic Surgery, Kyung Hee University Hospital, Seoul, 02447, South Korea
| | - Jun-Gu Park
- Department of Orthopaedic Surgery, Anam Hospital, Korea University College of Medicine, 73, Goryeodae-Ro, Seongbuk-Gu, Seoul, 02841, South Korea
| | - Jaejoong Kim
- Department of Orthopaedic Surgery, Anam Hospital, Korea University College of Medicine, 73, Goryeodae-Ro, Seongbuk-Gu, Seoul, 02841, South Korea
| | - Dong Won Suh
- Department of Orthopaedic Surgery, Barunsesang Hospital, Seongnam, 13497, South Korea
| | - Seung-Beom Han
- Department of Orthopaedic Surgery, Anam Hospital, Korea University College of Medicine, 73, Goryeodae-Ro, Seongbuk-Gu, Seoul, 02841, South Korea.
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14
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Kim SE, Han HS. Robotic-assisted unicompartmental knee arthroplasty: historical perspectives and current innovations. Biomed Eng Lett 2023; 13:543-552. [PMID: 37872988 PMCID: PMC10590358 DOI: 10.1007/s13534-023-00323-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/14/2023] [Accepted: 09/16/2023] [Indexed: 10/25/2023] Open
Abstract
Robotic assisted unicompartmental knee arthroplasty (RAUKA) has emerged as a successful approach for optimizing implant positioning accuracy, minimizing soft tissue injury, and improving patient-reported outcomes. The application of RAUKA is expected to increase because of its advantages over conventional unicompartmental knee arthroplasty. This review article provides an overview of RAUKA, encompassing the historical development of the procedure, the features of the robotic arm and navigation systems, and the characteristics of contemporary RAUKA. The article also includes a comparison between conventional unicompartmental arthroplasty and RAUKA, as well as a discussion of current challenges and future advancements in the field of RAUKA.
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Affiliation(s)
- Sung Eun Kim
- Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744 Republic of Korea
| | - Hyuk-Soo Han
- Department of Orthopaedic Surgery, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744 Republic of Korea
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15
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Foissey C, Batailler C, Vahabi A, Fontalis A, Servien E, Lustig S. Combination of a High Residual Varus and Joint-Line Lowering Strongly Increases the Risk of Early Implant Failure in Medial Unicompartmental Knee Arthroplasty. J Arthroplasty 2023; 38:2275-2281. [PMID: 37271228 DOI: 10.1016/j.arth.2023.05.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 05/18/2023] [Accepted: 05/20/2023] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND Outliers in implant positioning, malalignment, and joint line height change are risk factors for unicompartmental knee arthroplasty (UKA) failure. However, their relationships and patterns in large datasets remain unexplored. This study assessed medial UKA survival in a large cohort and explored associated risk factors. METHODS This was a retrospective cohort study on medial UKA patients (2011 to 2019). Radiological outcomes included tibial implant positioning in the coronal plane, posterior tibial slope, residual knee deformity, and joint line restitution. Survival rate at last follow-up was recorded. Multinomial logistic regression analyzed risk factors, incorporating demographic and univariate analysis data. RESULTS Three hundred and sixty-six knees met inclusion criteria, with 10 lost to follow-up (2.7%). Mean follow-up was 61.3 months [24.1 to 135.1]. 5- and 10-year implant survival rates were 92% ± 1.6 and 88.4% ± 3.8, respectively. Multivariate analysis identified post-operative hip-knee-ankle angle (HKA) ≤ 175° (OR = 5.30 [1.64 to 17.13], P = .005) and joint line lowering ≥2 mm (OR = 8.86 [2.06 to 38.06]) as significant risk factors for tibial implant failure. Their combination carried a significantly high risk of failure (OR = 10.3 [3.1 to 34.3]). Post-operative HKA < 175° was common in knees with pre-operative HKA < 172°. CONCLUSION This study reports encouraging 5- and 10-year survival outcomes for medial UKA. Tibial loosening was the main reason for revision. Patients with joint line lowering ≥ 2 mm and post-operative HKA ≤ 175° were at high risk of tibial implant failure. Surgeons should carefully restore the joint line in cases of pre-operative HKA < 172°.
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Affiliation(s)
- Constant Foissey
- Department of Orthopedic Surgery and Sport Medicine, Croix-Rousse Hospital, FIFA Medical Center of Excellence, Lyon, France
| | - Cécile Batailler
- Department of Orthopedic Surgery and Sport Medicine, Croix-Rousse Hospital, FIFA Medical Center of Excellence, Lyon, France
| | - Arman Vahabi
- Department of Orthopaedics and Traumatology, Ege University, Izmir, Turkey
| | - Andreas Fontalis
- Department of Trauma and Orthopaedics Surgery, University College Hospital, London, United Kingdom; Division of Surgery and Interventional Science, University College London, London, United Kingdom
| | - Elvire Servien
- Department of Orthopedic Surgery and Sport Medicine, Croix-Rousse Hospital, FIFA Medical Center of Excellence, Lyon, France; EA 7424, Interuniversity Laboratory of Human Movement Science, Université Lyon 1, Lyon, France
| | - Sébastien Lustig
- Department of Orthopedic Surgery and Sport Medicine, Croix-Rousse Hospital, FIFA Medical Center of Excellence, Lyon, France; Université Claude Bernard Lyon 1, IFSTTAR, LBMC UMR_T9406, Université de Lyon, Lyon, France
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16
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Mancino F, Malahias MA, Loucas R, Ryan L, Kostretzis L, Tornberg H, Gu A, Nikolaou VS, Togninalli D, Alexiades MM. Cementless versus cemented unicompartmental knee arthroplasty: a systematic review of comparative studies. Musculoskelet Surg 2023; 107:255-267. [PMID: 36689086 DOI: 10.1007/s12306-023-00773-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 01/08/2023] [Indexed: 01/24/2023]
Abstract
There are still some controversies regarding the clinical use of cementless UKAs. The aim of this systematic review was to determine whether cementless medial UKA leads to similar outcomes compared to cemented medial UKA. This search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews guidelines (PRISMA). The random effects model with 95% confidence interval (CI) was applied to the analysis. The I2 statistic was used to assess study heterogeneity. Six studies were eligible for inclusion (4784 UKAs, 4776 patients): 2947 cemented UKAs (61.6%) and 1837 cementless UKAs (38.4%). The overall mean follow-up was 4.9 years. The all-cause reoperation rate was 11.3% (80 of 706) at mean 5.7-year follow-up for cemented UKA and 6.9% (57 of 824) at mean 4.1-year follow-up for the cementless. The overall revision rate was 10.2% (303 of 2947) for the cemented and 5.8% (108 of 1837) for the cementless. Aseptic loosening was the most frequent reason of revision (2.3% cemented vs 0.5% cementless). The overall rate of radiolucent lines (RLL) was 28.3% (63 of 223) in the cemented cohort and 11.1% in the cementless (26 of 234). All the studies reported improved functional outcomes. Cementless UKA provides at least equivalent if not better results compared to cemented UKA. Despite the use of cemented UKA outnumber cementless fixation, available data shows that cementless UKA had a reduced midterm revision rate, while providing similar functional outcomes.
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Affiliation(s)
- F Mancino
- Department of Orthopaedic, The Orthopaedic Research Foundation of Western Australia (ORFWA), Fiona Stanley Hospital, Perth, Australia.
| | - M A Malahias
- School of Medicine - Frankfurt, European University Cyprus, Im Vogelsgesang 3, Frankfurt am Main, 60488, Germany
- Department of Orthopedics and Traumatology, Clinica ARS Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland
| | - R Loucas
- Department of Orthopedics, Balgrist University Hospital, University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - L Ryan
- Department of Orthopedic Surgery, George Washington School of Medicine and Health Sciences, 2300 M St NW, Washington DC, 20037, USA
| | - L Kostretzis
- Hôpital Maisonneuve-Rosemont, CanadaCooper, 5415 Boulevard de L'Assomption, Montréal, QC, H1T 2M4, Canada
| | - H Tornberg
- Medical School of Rowan University, 401 Broadway, Camden, NJ, 08103, USA
| | - A Gu
- Department of Orthopedic Surgery, George Washington School of Medicine and Health Sciences, 2300 M St NW, Washington DC, 20037, USA
- The Stavros Niarchos Foundation Complex Joint Reconstruction Center, Hospital for Special Surgery, 535 E 70Th St, New York, 10021, USA
| | - V S Nikolaou
- 2nd Orthopaedic Department, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - D Togninalli
- Department of Orthopedics and Traumatology, Clinica ARS Medica, Via Grumo 16, 6929, Gravesano, Ticino, Switzerland
| | - M M Alexiades
- Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, 535 E 70th St, New York, 10021, USA
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17
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Torre BB, Pavano C, Connors JP, Silver J, Bellas N, Shekhman M, Solovyova O. Early Tibial Baseplate Fracture After Medial Unicondylar Knee Arthroplasty: A Report of 2 Cases. JBJS Case Connect 2023; 13:01709767-202309000-00028. [PMID: 37535760 DOI: 10.2106/jbjs.cc.22.00733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
CASE Implant failure after unicondylar knee arthroplasty (UKA) is a rare but well-described complication in the arthroplasty literature. However, there is a paucity of literature regarding rapid catastrophic failure of modern implant designs. This is a case report of 2 patients with early catastrophic failure of the tibial baseplate after UKA with a Stryker Restoris MultiCompartmental Knee System implant using Mako robotic assistance, both requiring revision to total knee arthroplasty. CONCLUSION Improved awareness and understanding of early UKA tibial baseplate failure may help identify both patient and surgical risk factors that could help prevent further instances in the future.
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Affiliation(s)
- Barrett B Torre
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Colin Pavano
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - John Patrick Connors
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Jacob Silver
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Nicholas Bellas
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
| | - Mark Shekhman
- Department of Orthopedic Surgery, Bone and Joint Institute at Hartford Hospital, Hartford, Connecticut
| | - Olga Solovyova
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut
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18
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Bin G, Jinmin L, Cong T, Yuchen T, Xiaohui Z, Yayi X. Surgical interventions for symptomatic knee osteoarthritis: a network meta-analysis of randomized control trials. BMC Musculoskelet Disord 2023; 24:313. [PMID: 37087428 PMCID: PMC10122318 DOI: 10.1186/s12891-023-06403-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 04/06/2023] [Indexed: 04/24/2023] Open
Abstract
BACKGROUND Multiple surgical interventions exist for the treatment of symptomatic knee osteoarthritis, but the surgeon and patient may often have difficulty deciding which interventions are the best option. METHODS We conducted a systematic review to identify randomized clinical trials (RCTs) that compared complications, revisions, reoperations, and functional outcomes among TKA (total knee arthroplasty), UKA (unicompartmental knee arthroplasty), HTO (high tibial osteotomy), BCA (bicompartmental knee arthroplasty), BIU (bi-unicompartmental knee arthroplasty), and KJD (knee joint distraction). The PubMed, Embase, and Cochrane databases were reviewed for all studies comparing two or more surgical interventions. Direct-comparison meta-analysis and network meta-analysis (NMA) were performed to combine direct and indirect evidence. The risk of bias was assessed using the revised Cochrane risk of bias tool for RCTs. RESULTS This NMA and systematic review included 21 studies (17 RCTs), with a total of 1749 patients. The overall risk-of-bias assessment of the RCTs revealed that 7 studies had low risk, 5 had some concerns, and 9 had high risk. SUCRA (the surface under the cumulative ranking curve) rankings revealed that KJD had the greatest risk of appearing postoperative complications, revisions, and reoperations, and UKA or TKA had the lowest risk. The majority of comparisons among various treatments showed no difference for functional outcomes. CONCLUSION Each surgical intervention is noninferior to other treatments in functional outcomes, but UKA and TKA are better options to treat OA according to SUCRA rankings by comparing complications, revisions, and reoperations. KJD is an imperfect option for treating OA. Other treatments should be carefully considered for each patient in accordance with their actual conditions. However, this conclusion is limited by the selection of reviewed publications and individual variation of surgical indications for patients. TRIAL REGISTRATION This study was registered with Research Registry (reviewregistry1395).
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Affiliation(s)
- Geng Bin
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- Gansu Province Clinical Research Center for Orthopaedics, Lanzhou, Gansu, China
| | - Liu Jinmin
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Tian Cong
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Tang Yuchen
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Zhang Xiaohui
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- Gansu Province Clinical Research Center for Orthopaedics, Lanzhou, Gansu, China
| | - Xia Yayi
- Department of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China.
- Gansu Province Clinical Research Center for Orthopaedics, Lanzhou, Gansu, China.
- Lanzhou University Second Hospital, #82 Cuiyingmen, Lanzhou, Gansu, 730000, China.
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19
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Gomoll AH, Diduch DR, Flanigan DC, Ranawat AS, Slynarski K, Walawski J, Crawford DC. An implantable shock absorber yields an 85% survival-from-arthroplasty rate through 5 years in working-age patients with medial compartment knee osteoarthritis. Knee Surg Sports Traumatol Arthrosc 2023:10.1007/s00167-023-07373-4. [PMID: 36951981 DOI: 10.1007/s00167-023-07373-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/25/2023] [Indexed: 03/24/2023]
Abstract
PURPOSE To evaluate the 5-year rate of survival without undergoing arthroplasty or high tibial osteotomy (HTO) in subjects with mild-to-moderate medial compartment knee osteoarthritis (OA) who were treated with an implantable shock absorber (ISA) system. METHODS Three prospective, sequential, multicenter, international, single-arm clinical trials were conducted comprising subjects who received an ISA for symptomatic medial knee OA after failing ≥ 6 months of conservative therapy. Study outcomes were analyzed cumulatively and by enrollment group when all subjects' follow-up data exceeded the 2-year threshold after ISA implantation. Primary outcome was survival rate without conversion to arthroplasty/HTO. Secondary outcomes were changes in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain and function scores after ISA implantation. RESULTS All 171 enrolled subjects (age 51 ± 9 years, body-mass index 28.5 ± 3.5 kg/m2, 38% female; study knee Kellgren-Lawrence score 2.7 ± 0.9 points) were followed for a minimum of 2, and up to 5, years after device implantation. Overall, 90.6% (155/171) of subjects survived without requiring arthroplasty/HTO at last follow-up (mean 3.2 ± 1.6 years). The Kaplan-Meyer median 3- and 5-year survival-without-arthroplasty point estimates were 89.8% (95% CI 86.5‒95.7%) and 84.9% (95% CI 75.1‒91.1%), respectively. The median 3-year estimated survival rate for the most recent study (n = 81) was 97.3%. The mean WOMAC Pain score decreased 71% from baseline to last follow-up after ISA implantation, from 58 ± 13 to 16 ± 17 points (p < 0.0001). The Function score improved 69%, decreasing from 56 ± 18 to 17 ± 17 points (p < 0.0001). CONCLUSIONS In younger patients with mild-to-moderate symptomatic medial compartment knee OA, implantation of the ISA device resulted in a 5-year survival rate of 85% from undergoing arthroplasty or HTO. The ISA system may be an effective treatment option for working-age patients with medial knee OA who are not candidates for or do not desire more invasive surgical approaches. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Andreas H Gomoll
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| | - David R Diduch
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
| | - David C Flanigan
- Wexner Medical Center & Department of Orthopaedic Surgery, Ohio State University, Columbus, OH, USA
| | - Anil S Ranawat
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | | | | | - Dennis C Crawford
- Department of Orthopedics & Rehabilitation, Oregon Health & Science University, Portland, OR, USA
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20
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Price A, Thienpont E, Catani F, Abram S, Troelsen A. Consensus statement on unicompartmental knee replacement: A collaboration between BASK and EKS. Knee 2023; 41:391-396. [PMID: 37088518 DOI: 10.1016/j.knee.2023.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
BACKGROUND The aim of this study was to deliver consensus recommendations for the clinical practice of unicompartmental knee arthroplasty (UKA). METHODS Members of the British Association for Surgery of the Knee (BASK) and European Knee Society (EKS) were invited to attend a joint meeting in London, UK (December 2019). A formal consensus process was undertaken at the meeting incorporating a multiple round Delphi exercise, with group discussion of areas of agreement and disagreement between rounds. Eighty delegates attended the meeting and five consensus statements were considered and revised, with a threshold level of 80% agreement required as the definition consensus. RESULTS Five consensus statements with accompanying supporting evidence and text were agreed following two rounds of the process: (1) UKA should be offered as a successful alternative to TKA in patients undergoing arthroplasty who meet agreed indications; (2) When consenting a patient for UKA, information including the benefits and risks that are specific to UKA, should be tailored to and discussed with the individual patient; (3) Evidence suggests that surgeons should avoid low-volume use of UKA to optimise outcomes for their patients; (4) Surgeons should use the contemporary evidence-based indications and contraindications for medial UKA; (5) Knee arthroplasty surgeons should have exposure to and training in UKA. CONCLUSIONS The agreed joint BASK-EKS consensus statements on UKA practice are recommended as the contemporary basis of optimal care for these patients and should inform future training and service developments.
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Affiliation(s)
- Andrew Price
- British Association for Surgery of the Knee (BASK); European Knee Society (EKS).
| | | | | | - Simon Abram
- British Association for Surgery of the Knee (BASK)
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21
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Eckert JA, Bitsch RG, Schroeder S, Schwarze M, Jaeger S. Pulsatile Lavage Improves Tibial Cement Penetration and Implant Stability in Medial Unicompartmental Arthroplasty: A Cadaveric Study. J Knee Surg 2023; 36:417-423. [PMID: 34507360 DOI: 10.1055/s-0041-1735310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cemented unicompartmental knee arthroplasty (UKA) shows good survivorship and function. However, implant failure, causing the need for revision, can occur. Aseptic loosening is still among the most common reasons for revision. The purpose of this study was to assess the influence of preimplantation lavage technique on tibial cement penetration depth, tibial cement volume, and load to fracture in the tibial component of mobile-bearing UKA. In 10 pairs of fresh frozen human tibiae, cemented UKA was implanted by an experienced surgeon. Tibial components were then implanted, left and right tibiae were randomly allocated to group A or B. Prior to implantation, irrigation was performed with either syringe lavage or pulsatile jet lavage in a standardized manner. Cement surface was 4170.2 mm2 (3271.6-5497.8 mm2) in the syringe lavage group, whereas the jet lavage group showed 4499.3 mm2 (3354.3-5809.1 mm2); cement volume was significantly higher as well (4143.4 mm3 (2956.6-6198.6 mm3) compared with 5936.9 mm3 (3077.5-8183.1 mm3)). Cement penetration depth was 2.5 mm (1.7-3.2 mm) for the jet lavage, and 1.8 mm (1.2-2.4 mm) for the syringe lavage. The mean fracture load was 4680 N in the jet lavage group and 3800 N in the syringe lavage group (p = 0.001). Subsidence was significantly higher for syringe lavage. This study suggests a correlation of cement penetration depth and cement volume to implant failure in the tibial component of a UKA using a cadaveric model. The type of bone lavage most likely influences these two key parameters.
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Affiliation(s)
- Johannes A Eckert
- Laboratory of Biomechanics and Implant Research, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Rudi G Bitsch
- Laboratory of Biomechanics and Implant Research, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany.,Deutsches Gelenkzentrum in der ATOS Klinik Heidelberg GmbH & Co. KG, Heidelberg, Germany
| | - Stefan Schroeder
- Laboratory of Biomechanics and Implant Research, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Martin Schwarze
- Laboratory of Biomechanics and Implant Research, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Sebastian Jaeger
- Laboratory of Biomechanics and Implant Research, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
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22
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Safe and reliable clinical outcomes at 2 years of a fixed-bearing partial knee arthroplasty with a morphometric tibial tray in a large worldwide population. Knee Surg Sports Traumatol Arthrosc 2023; 31:814-821. [PMID: 34557949 DOI: 10.1007/s00167-021-06748-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE The purpose of this study was to evaluate: (1) improvement of functional and quality of life scores, (2) adverse events, (3) short-term implants survivorship of a newly designed fixed-bearing partial knee replacement (PKR) with a morphometric tibial tray in a large and multicentric population at a minimum follow-up of 2 years. METHODS From 2017 to 2019, 479 medial PKR were implanted by 16 non-developing surgeons from United States, Europe, and Japan. Eight patients were lost to follow-up (1.8%). Standardized follow-up procedures included patient-reported outcomes (Oxford Knee Society score, Forgotten Joint Score, EQ VAS, EQ 5D), patient satisfaction, radiographic assessments, adverse event at 2 years. Comparisons between the preoperative and postoperative values were performed using Student t test. Kaplan-Meier survivorship analysis was performed with knee revision as the endpoint. RESULTS The mean age was 65.6 ± 9.6 years. Mean body mass index was 29.5 ± 5.1 kg/m2. Oxford Knee Society score and Forgotten Joint Score, respectively, improved from 23.7 ± 8 and 16 ± 15.8 preoperatively to 42.4 ± 6.5 and 74 ± 24.9 at 2 years (p < 0.0001). Satisfaction Score was 92.3 ± 13.4 at 2 years. Ten re-operations (2.1%) were reported including seven implant removals (1.5%). No other adverse event was reported. The causes of conversion to total knee arthroplasty were: nickel allergy (n = 2), patellofemoral osteoarthritis (n = 1), pain (n = 1), deep infection (n = 3). Two re-operations were performed due to infection, and one for internal fixation for a tibial plateau fracture. The 2-year Kaplan-Meier survival estimate was 98.4%, with implant removals as the endpoint. CONCLUSION This prospective multicentric study reported safe and reliable clinical outcomes of a morphometric PKR, which optimized tibial coverage and femoral fit, in a large population of patients worldwide at 2 years. LEVEL OF EVIDENCE Prospective cohort study-therapeutic study, Level II.
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23
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Zheng N, Dai H, Zou D, Dimitriou D, Wang Q, Tsai TY. Altered In Vivo Knee Kinematics and Lateral Compartment Contact Position During the Single-Leg Lunge After Medial Unicompartmental Knee Arthroplasty. Orthop J Sports Med 2023; 11:23259671221150958. [PMID: 36846813 PMCID: PMC9947695 DOI: 10.1177/23259671221150958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Background Osteoarthritis (OA) progression in the lateral compartment is the most common reason for revision after medial unicompartmental knee arthroplasty (UKA). Altered contact kinematics in the lateral compartment may be related to the pathogenesis of OA. Purpose To quantify the in vivo 6 degrees of freedom (6-DOF) knee kinematics and contact points in the lateral compartment during a single-leg lunge in knees after medial UKA and compare them with the contralateral native knee. Study Design Descriptive laboratory study. Methods Included were 13 patients (3 male, 10 female; mean age, 64.7 ± 6.2 years) who had undergone unilateral medial UKA. All patients underwent computed tomography preoperatively and 6 months postoperatively, and bilateral knee posture was tracked using dual fluoroscopic imaging system during a single-leg deep lunge to evaluate the in vivo 6-DOF kinematics. The closest points between the surface models of the femoral condyle and the tibial plateau were determined to locate the lateral compartment contact positions. The Wilcoxon signed-rank test was used to compare knee kinematics and lateral contact position between the UKA and native knees. Spearman correlation was used to test the associations of bilateral 6-DOF range difference and lateral compartment contact excursion difference with bilateral limb alignment difference and functional scores. Results Compared with native knees, UKA knees had an increased anterior femoral translation of 2.0 ± 0.3 mm during the entire lunge (P < .05). The lateral contact position in UKA knees was located 2.0 ± 0.9 mm posteriorly and with 3.3 ± 4.0 mm less range of contact excursion than native knees (P < .05). Decreased range of lateral compartment contact excursion in the anterior-posterior direction was significantly associated with increased hip-knee-ankle angle in the UKA side (P < .05). Conclusion The current study revealed altered knee 6-DOF kinematics and the reduced contact excursion range during single-leg lunge after unilateral medial UKA. Clinical Relevance The altered contact kinematics and reduced range of contact excursion in UKA knees could lead to excessive cumulative articular surface contact stress, which is implicated in the pathogenesis of OA.
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Affiliation(s)
- Nan Zheng
- School of Biomedical Engineering and Med-X Research Institute,
Shanghai Jiao Tong University, Shanghai, China.,Engineering Research Center of Digital Medicine and Clinical
Translation, Ministry of Education, Shanghai, China.,Shanghai Key Laboratory of Orthopaedic Implants and Clinical
Translation R&D Center of 3D Printing Technology, Department of Orthopaedic
Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of
Medicine, Shanghai, China
| | - Huiyong Dai
- Department of Orthopedics, Shanghai Sixth People’s Hospital
Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai,
China
| | - Diyang Zou
- School of Biomedical Engineering and Med-X Research Institute,
Shanghai Jiao Tong University, Shanghai, China.,Engineering Research Center of Digital Medicine and Clinical
Translation, Ministry of Education, Shanghai, China.,Shanghai Key Laboratory of Orthopaedic Implants and Clinical
Translation R&D Center of 3D Printing Technology, Department of Orthopaedic
Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of
Medicine, Shanghai, China
| | - Dimitris Dimitriou
- Department of Orthopedics, Balgrist University Hospital, Zürich,
Switzerland
| | - Qi Wang
- Department of Orthopedics, Shanghai Sixth People’s Hospital
Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai,
China
| | - Tsung-Yuan Tsai
- School of Biomedical Engineering and Med-X Research Institute,
Shanghai Jiao Tong University, Shanghai, China.,Engineering Research Center of Digital Medicine and Clinical
Translation, Ministry of Education, Shanghai, China.,Shanghai Key Laboratory of Orthopaedic Implants and Clinical
Translation R&D Center of 3D Printing Technology, Department of Orthopaedic
Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of
Medicine, Shanghai, China.,Tsung-Yuan Tsai, PhD, School of Biomedical Engineering and Med-X
Research Institute, Shanghai Jiao Tong University; Engineering Research Center
of Digital Medicine and Clinical Translation, Ministry of Education, Shanghai
200030, China ()
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24
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Pongcharoen B, Liengwattanakol P, Boontanapibul K. Comparison of Functional Recovery Between Unicompartmental and Total Knee Arthroplasty: A Randomized Controlled Trial. J Bone Joint Surg Am 2023; 105:191-201. [PMID: 36542689 DOI: 10.2106/jbjs.21.00950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Comparisons of functional recovery between unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) using performance-based tests are lacking. Therefore, this study aimed to compare 2-minute walk test (2MWT) and Timed Up-and-Go test (TUG) results between UKA and TKA for isolated medial knee osteoarthritis (OA). We hypothesized that UKA yields faster functional recovery than TKA as measured with the 2MWT and TUG. METHODS We conducted a randomized controlled trial comparing medial UKA and TKA in patients with isolated medial knee OA. A total of 110 patients were enrolled; after 11 exclusions, 99 patients (50 UKA, 49 TKA) were included in the final analysis. The patients were tested using the 2MWT and TUG preoperatively and at 6 weeks, 3 and 6 months, and 1 and 2 years postoperatively. Patient-reported outcome measures (PROMs) were also evaluated. The mean 2MWT, TUG, and PROM results were compared between groups at each time point. RESULTS The mean 2MWT distance after UKA was significantly longer than that after TKA at 6 weeks (96.5 ± 22.6 m for UKA compared with 81.1 ± 19.1 m for TKA; difference, 18 m [95% confidence interval (CI),10.4 to 25.6 m]; p < 0.001), 3 months (102.1± 24.4 compared with 87.5 ± 22.3 m; difference, 14.7 m [95% CI, 5.4 to 24.0 m]; p = 0.002), and 6 months (102.8 ± 16.2 compared with 89.6 ± 15.3 m; difference, 13.2 m [95% CI, 6.9 to 19.5 m]; p < 0.001). The values at 1 and 2 years were similar after UKA and TKA. The mean TUG after UKA was also significantly shorter than that after TKA at 6 weeks and 3 months. The mean PROMs were similar after both treatments, with the exception of the Oxford Knee Score and subscales of the Knee injury and Osteoarthritis Outcome Score at 6 weeks and 3 months postoperatively. CONCLUSIONS The 2MWT indicated that UKA for isolated medial knee OA enabled faster recovery than TKA did at 6 weeks to 6 months, and earlier recovery was also seen with the TUG at 6 weeks to 3 months. The 2MWT and TUG results after UKA and TKA were similar to one another at 1 and 2 years. LEVEL OF EVIDENCE Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
| | | | - Krit Boontanapibul
- Chulabhorn International College of Medicine, Thammasat University, Pathum Thani, Thailand
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25
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Pornrattanamaneewong C, Ruangsillapanan N, Ruangsomboon P, Narkbunnam R, Chareancholvanich K, Udomkiat P. No association between different in tibial resection level and clinical outcomes six months after Oxford unicompartmental knee arthroplasty: a prospective cohort study. BMC Musculoskelet Disord 2023; 24:3. [PMID: 36597083 PMCID: PMC9808939 DOI: 10.1186/s12891-022-06088-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 12/13/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Localized tibial strain is one of the hypotheses to explain residual pain after Oxford UKA. We evaluate whether the depth of the vertical cut during tibial resection correlates with medial knee pain. We aimed to investigate the association between the depth of tibial resection and medial knee pain after OUKA. METHODS This prospective cohort study enrolled 85 patients (mean age: 64.5 ± 7.7 years) who underwent cemented OUKA at our institute during October 2018-June 2019. The depth of tibial resection was measured intraoperatively as the thickness of the anterior, middle, and posterior parts. The greatest of the three thicknesses was recorded. Medial knee pain was assessed at 6 weeks and followed to 6 months. Patients were divided into the pain (P) and no pain (NP) groups. Preoperative and postoperative radiographic findings and OKS were compared between groups. We used logistic regression to analyze the independent association. RESULTS The mean preoperative Oxford Knee Score (OKS) was 27.2 ± 7.6. The incidence of medial knee pain was 23.5% at 6 weeks after OUKA. The P group had a significantly lower OKS at 6 weeks compared to the NP group (28.9 ± 9.7 vs 33.7 ± 6.5, p = 0.049). There was no significant difference in the depth of tibial resection between groups. Medial knee pain had resolved by 6 months in all patients, and the 6-month OKS was similar between groups. CONCLUSION Medial knee pain was found to be common in the early postoperative period after OUKA, but this pain spontaneously resolved by 6 months. As a range of tibial resection level, post-operative pain is not associated with tibial resection thickness in this study. LEVEL OF EVIDENCE Level II. TRIAL REGISTRATION The study was approved by the Institutional review board of Siriraj Hospital, Mahidol university. [SIRB 691/2560(EC4)].
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Affiliation(s)
- Chaturong Pornrattanamaneewong
- grid.10223.320000 0004 1937 0490Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wang Lang Road, Bangkok, Bangkok Noi 10700 Thailand
| | - Naruepol Ruangsillapanan
- Department of Orthopaedic Surgery, Maharat nakornratchasima hospital, Nakhon Ratchasima, Thailand
| | - Pakpoom Ruangsomboon
- grid.10223.320000 0004 1937 0490Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wang Lang Road, Bangkok, Bangkok Noi 10700 Thailand ,grid.17063.330000 0001 2157 2938 Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada
| | - Rapeepat Narkbunnam
- grid.10223.320000 0004 1937 0490Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wang Lang Road, Bangkok, Bangkok Noi 10700 Thailand
| | - Keerati Chareancholvanich
- grid.10223.320000 0004 1937 0490Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wang Lang Road, Bangkok, Bangkok Noi 10700 Thailand
| | - Pacharapol Udomkiat
- grid.10223.320000 0004 1937 0490Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wang Lang Road, Bangkok, Bangkok Noi 10700 Thailand
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26
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Analysis of revision rates and complication rates among patients undergoing unicompartmental and bicompartmental knee Arthroplasties when compared to Total knee arthroplasty. Knee 2023; 40:166-173. [PMID: 36436385 DOI: 10.1016/j.knee.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 11/11/2022] [Accepted: 11/12/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND With recent advances in partial knee arthroplasty, there is conflicting data regarding the outcomes and revision rates for bicompartmental knee arthroplasty (BKA) and unicompartamental knee arthroplasty (UKA) compared to total knee arthroplasty (TKA). This study uses national data to compare surgical and medical complications of UKA, BKA, and TKA to aid surgical decision-making. METHODS A retrospective cohort analysis was done using the Mariner dataset of the PearlDiver patient records database from 2010-2019. Current Procedural Terminology (CPT) codes were used to identify patients who underwent UKA, BKA, and TKA for a primary indication of osteoarthritis (OA). Univariate and multivariable analyses were performed to determine 1-year and 2-year revision, prosthetic joint infection (PJI), and loosening, 1-year manipulation under anesthesia (MUA), and 90-day postoperative medical complications. RESULTS The BKA cohort was found to have higher odds of one and two-year revision compared to UKA and TKA cohorts. Additionally, the UKA cohort had higher odds of one and two-year revision but lower odds of 1-year MUA than the TKA cohort. However, both the BKA and UKA cohorts had lower odds of any 90-day postoperative complications when compared to the TKA cohort. CONCLUSIONS Even with modern implants and approaches, our study found that revision rates are highest for BKA followed by UKA and TKA at two years postoperatively. Notably, medical complications were much less common after all partial knee replacement types when compared to TKA. These findings may be used to guide patients in selecting the appropriate surgery to meet their goals and expectations.
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Lee OS, Lee MC, Shin CY, Han HS. Spacer Block Technique Was Superior to Intramedullary Guide Technique in Coronal Alignment of Femoral Component after Fixed-Bearing Medial Unicompartmental Knee Arthroplasty: A Case-Control Study. MEDICINA (KAUNAS, LITHUANIA) 2022; 59:medicina59010089. [PMID: 36676713 PMCID: PMC9864927 DOI: 10.3390/medicina59010089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023]
Abstract
Backgrounds and Objectives: The spacer block technique in unicompartmental knee arthroplasty (UKA) has still a concern related to the precise position of the component in the coronal and sagittal planes compared to intramedullary guide technique. The purposes of this study were to explore whether the spacer block technique would improve the radiological alignment of implants and clinical outcomes compared with the outcomes of the intramedullary guide technique in fixed-bearing medial UKA. Materials and Methods: In total, 115 patients who underwent unilateral, fixed-bearing medial UKA were retrospectively reviewed and divided into group IM (intramedullary guides; n = 39) and group SB (spacer blocks; n = 76). Clinical assessment included range-of-motion and patient-reported outcomes. Radiological assessment included the mechanical femorotibial angle, coronal and sagittal alignments of the femoral and tibial components, and coronal femorotibial congruence angle. Results: All clinical outcomes showed no significant differences between groups. The coronal femoral component angle was valgus 2.4° ± 4.9° in IM group and varus 1.1° ± 3.2° (p < 0.001). In group IM, the number of outlier in coronal femoral component angle (<−10° or 10°<) was 3 cases, while in group SB, there was no outlier (p = 0.014). The coronal femorotibial congruence angle was significantly less in group SB (mean 1.9°, range, −3.2°~8.2°) than in group IM (mean 3.4°, range, −9.6°~16.5°) (p = 0.028). Conclusions: In the group SB, the coronal alignment of femoral component was closer to neutral, and outlier was less frequent than in the group IM. The spacer block technique was more beneficial in achieving proper coronal alignment of the femoral component and congruence of femorotibial components compared to the intramedullary guide technique in fixed-bearing medial UKAs.
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Affiliation(s)
- O-Sung Lee
- Department of Orthopedic Surgery, Eulji University School of Medicine, Uijeongbu-si 11759, Republic of Korea
| | - Myung Chul Lee
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Chung Yeob Shin
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hyuk-Soo Han
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
- Correspondence: ; Tel.: +82-2-2072-4060
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28
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No differences in 10-year clinical outcomes and quality of life between patients with different mediolateral femoral component positions in fixed-bearing medial unicompartmental knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 2022; 30:3176-3183. [PMID: 34031725 DOI: 10.1007/s00167-021-06620-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE There has been a paucity of literature evaluating the role of mediolateral femoral component position (FCP) in medial unicompartmental arthroplasty (UKA). Hence, the aim of this study is to evaluate whether the mediolateral FCP in UKA will affect the 10-year clinical outcomes and quality of life of patients who underwent medial UKA. METHODS Data of 262 patients who underwent medial UKA were analyzed. All patients were assessed at 6 months, 2 years and 10 years using the Knee Society Function Score, Knee Society Knee Score, Oxford Knee Score, Short-Form 36 Physical/Mental Component Scores and postoperative satisfaction. The mediolateral FCP on postoperative radiographs was measured by independent assessors using the Picture Archiving and Communication Systems. 144 patients were distributed into group C (center), 98 into group M (medial) and 20 into group L (lateral) according to FCP, and one-way ANOVA was used to compare the functional outcomes of the three groups. RESULTS No statistical differences were found between the three groups in terms of 10-year clinical outcomes, quality of life, satisfaction rates and revision rates. CONCLUSION Differences in mediolateral FCP did not result in significant difference in 10-year postoperative clinical outcomes for patients who underwent fixed-bearing medial UKAs. LEVEL OF EVIDENCE Retrospective study, Level III.
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29
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Rossi SMP, Sangaletti R, Nesta F, Matascioli L, Terragnoli F, Benazzo F. A well performing medial fixed bearing UKA with promising survivorship at 15 years. Arch Orthop Trauma Surg 2022; 143:2693-2699. [PMID: 35908099 DOI: 10.1007/s00402-022-04562-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Unicompartmental knee arthroplasty (UKA) accounts for 10% of knee arthroplasty procedures in Europe. Fixed bearing UKA designs have shown favorable survivorship in registries when compared with mobile bearings. This study analyses long-term follow-up of patients with a medial fixed bearing metal backed tibial UKA and reports 15 years survivorship and clinical outcomes. METHODS Data were collected prospectively for 148 medial unicompartmental fixed bearing metal backed UKAs implanted in 148 patients in two high volumes knee arthroplasty centers between January 2005 and December 2007. The indication was osteoarthritis in all but 2 patients. Patients' reported outcome scores were documented at last follow up. The mean patient age at time of surgery was 65 years. RESULTS At final follow up, outcome and survivorship data were collected for 124 medial fixed bearing UKAs. Thirteen patients underwent revision; average time to revision was 77 months (SD 35.31). The Kaplan-Meier analysis demonstrated a survivorship of 97.65% at 69 months and of 89,52%. at 120 months and 173 months of follow-up. When revisions for infection were excluded, the survivorship of the implant was 90.3% at the last of follow up. The mean OKS was 43.02 (SD 5.1) at the last follow-up, and the mean FJS was 77.6 (SD 6.9). CONCLUSION This Medial fixed bearing metal backed UKA demonstrates promising long-term survivorship and patient outcomes. It appears to be a suitable and reasonably lasting option for the treatment of medial compartment OA.
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Affiliation(s)
- Stefano Marco Paolo Rossi
- Sezione di Chirurgia Protesica ad Indirizzo Robotico, Unità di Traumatologia dello Sport, U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, 25124, Brescia, Italy.
| | - Rudy Sangaletti
- Sezione di Chirurgia Protesica ad Indirizzo Robotico, Unità di Traumatologia dello Sport, U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, 25124, Brescia, Italy
| | - Fabio Nesta
- U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, Brescia, Italy
| | - Luca Matascioli
- U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, Brescia, Italy
| | - Flavio Terragnoli
- U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, Brescia, Italy
| | - Francesco Benazzo
- Sezione di Chirurgia Protesica ad Indirizzo Robotico, Unità di Traumatologia dello Sport, U.O.C Ortopedia e Traumatologia, Fondazione Poliambulanza, Via Bissolati 57, 25124, Brescia, Italy
- IUSS Istituto Universitario di Studi Superiori, Pavia, Italy
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Haffar A, Krueger CA, Marullo M, Banerjee S, Dobelle E, Argenson JN, Sprenzel JF, Berger RA, Romagnoli S, Lonner JH. Staged BiCompartmental Knee Arthroplasty has Greater Functional Improvement, but Equivalent Midterm Survivorship, as Revision TKA for Progressive Osteoarthritis After Partial Knee Arthroplasty. J Arthroplasty 2022; 37:1260-1265. [PMID: 35227809 DOI: 10.1016/j.arth.2022.02.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/11/2022] [Accepted: 02/19/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Progressive arthritis in the unresurfaced compartments of the knee is one failure mode after partial knee arthroplasty (PKA). While progressive arthritis after PKA is typically treated with revision to TKA (rTKA), staged bicompartmental knee arthroplasty (sBiKA) -the addition of another PKA - is an alternative. This study compared outcomes of sBiKA and rTKA for progressive arthritis after PKA. METHODS A retrospective comparative study of non-consecutive cases at four institutions were performed in patients with an intact PKA, without loosening or wear, who underwent sBiKA (n = 27) or rTKA (n = 30), for progressive osteoarthritis. Outcomes studied were new Knee Society Function and Objective Scores (KSSF, KSSO), KOOS, Jr., ROM, operative times, length of stay, complication rates and the need for reoperations. RESULTS Mean time to conversion was 7.4 ± 6 years for sBiKA and 9.7 ± 8 for rTKA, P = .178. Patient demographics and pre-operative outcomes were similar among cohorts. At an average of 5.7 ± 3 (sBiKA) and 3.2 ± 2 years (rTKA), KOOS, Jr. significantly improved, P < .001, by an equivalent amount. Post-operative KSSO and KSSF were significantly higher in the sBiKA cohort, respectively, (90.4 ± 10 vs 72.1 ± 20, P < .001) and (80.3 ± 18 vs 67.1 ± 19, P = .011). sBiKA patients had significantly greater improvement in KSSO (30.7 ± 33 vs 5.2 ± 18, P = .003). One sBiKA patient underwent reoperation for continued pain. CONCLUSION SBiKA has equivalent survivorship, but greater improvement in functional outcomes as rTKA at short to midterm follow-up. Given the shorter operative times and length of stay, sBiKA is a safe and cost-effective alternative to rTKA for progressive osteoarthritis following PKA. Nevertheless, further follow-up is necessary to determine whether sBiKA is a durable option.
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Affiliation(s)
- Amer Haffar
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA
| | - Chad A Krueger
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA
| | - Matteo Marullo
- Joint Replacement Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Samik Banerjee
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA
| | - Emile Dobelle
- Department of Orthopedics and Traumatology, Institute for Locomotion, St. Marguerite Hospital, Marseille, France
| | - Jean N Argenson
- Department of Orthopedics and Traumatology, Institute for Locomotion, St. Marguerite Hospital, Marseille, France
| | - Jenny F Sprenzel
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL
| | - Richard A Berger
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL
| | - Sergio Romagnoli
- Joint Replacement Department, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Jess H Lonner
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA
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The Surgical Treatment of Osteoarthritis. LIFE (BASEL, SWITZERLAND) 2022; 12:life12070982. [PMID: 35888072 PMCID: PMC9319328 DOI: 10.3390/life12070982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/20/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022]
Abstract
Osteoarthritis is a degenerative condition affecting the whole joint with the underlying bone, representing a major source of pain, disability, and socioeconomic cost worldwide. Age is considered the strongest risk factor, albeit abnormal biomechanics, morphology, congenital abnormality, deformity, malalignment, limb-length discrepancy, lifestyle, and injury may further increase the risk of the development and progression of osteoarthritis as well. Pain and loss of function are the main clinical features that lead to treatment. Although early manifestations of osteoarthritis are amenable to lifestyle modification, adequate pain management, and physical therapy, disease advancement frequently requires surgical treatment. The symptomatic progression of osteoarthritis with radiographical confirmation can be addressed either with arthroscopic interventions, (joint) preservation techniques, or bone fusion procedures, whereas (joint) replacement is preferentially reserved for severe and end-stage disease. The surgical treatment aims at alleviating pain and disability while restoring native biomechanics. Miscellaneous surgical techniques for addressing osteoarthritis exist. Advanced computer-integrated surgical concepts allow for patient personalization and optimization of surgical treatment. The scope of this article is to present an overview of the fundamentals of conventional surgical treatment options for osteoarthritis of the human skeleton, with emphasis on arthroscopy, preservation, arthrodesis, and replacement. Contemporary computer-assisted orthopaedic surgery concepts are further elucidated.
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Total knee arthroplasty versus unicompartmental knee arthroplasty in management of anteromedial knee osteoarthritis: a randomized clinical trial. CURRENT ORTHOPAEDIC PRACTICE 2022. [DOI: 10.1097/bco.0000000000001128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ma P, Muheremu A, Zhang S, Zheng Q, Wang W, Jiang K. Biomechanical effects of fixed-bearing femoral prostheses with different coronal positions in medial unicompartmental knee arthroplasty. J Orthop Surg Res 2022; 17:150. [PMID: 35264185 PMCID: PMC8905781 DOI: 10.1186/s13018-022-03037-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/02/2022] [Indexed: 11/10/2022] Open
Abstract
Background To study the biomechanical effects of femoral prostheses at different coronal positions using finite element analysis and provide a clinical reference for unicompartmental knee arthroplasty (UKA). Methods A normal knee joint model was established and verified, establishing 13 working conditions for the femoral prosthesis: the standard position, varus and valgus angles of 3°, 6° and 9° and medial and lateral translations of 1 mm, 3 mm and 5 mm. The stress changes at different positions were analysed, including the polyethylene (PE) insert upper surface, the surface of lateral compartment cartilage and the surface of cancellous bone under tibial prosthesis. Results The stresses on the PE insert upper surface and the cancellous bone surface increased with increasing femoral prosthesis valgus/varus, and the stress increased gradually during medial to lateral translation. The stress change is more significant during valgus and lateral translation. However, the stress on the cartilage surface decreases in the process of varus to valgus and medial translation to lateral translation. Conclusion The fixed-bearing femoral prosthesis of the medial UKA should avoid translation or varus/valgus tilt on the coronal plane as much as possible. The obvious misalignment of the femoral prosthesis will significantly affect the stress on the internal structure of the knee joint, especially the PE insert and cartilage surface. A femoral prosthesis coronal tilt of more than 6° may significantly increase the stress on the PE surface, and varus of more than 6° may significantly increase the stress on the cartilage surface. For the femoral prosthesis position at the distal end of the femoral condyle, it is recommended to be placed in the centre.
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Affiliation(s)
- Pengcheng Ma
- Department of Orthopedics, Sixth Affiliated Hospital of Xinjiang Medical University, 39 Wuxing Nan Rd, Tianshan District, Ürümqi, 830001, Xinjiang, People's Republic of China
| | - Aikeremujiang Muheremu
- Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Ürümqi, 830001, Xinjiang, People's Republic of China
| | - Siping Zhang
- Department of Orthopedics, Sixth Affiliated Hospital of Xinjiang Medical University, 39 Wuxing Nan Rd, Tianshan District, Ürümqi, 830001, Xinjiang, People's Republic of China
| | - Qian Zheng
- Department of Orthopedics, Sixth Affiliated Hospital of Xinjiang Medical University, 39 Wuxing Nan Rd, Tianshan District, Ürümqi, 830001, Xinjiang, People's Republic of China
| | - Wei Wang
- Urumqi DW Innovation InfoTech Co., Ltd., Ürümqi, 830001, Xinjiang, People's Republic of China
| | - Kan Jiang
- Department of Orthopedics, Sixth Affiliated Hospital of Xinjiang Medical University, 39 Wuxing Nan Rd, Tianshan District, Ürümqi, 830001, Xinjiang, People's Republic of China.
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Is Static Alignment a Good Predictor of Dynamic Alignment after Total Knee Arthroplasty? Healthcare (Basel) 2022; 10:healthcare10030418. [PMID: 35326896 PMCID: PMC8956110 DOI: 10.3390/healthcare10030418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 02/02/2023] Open
Abstract
Background: Total knee arthroplasty (TKA) is the only effective treatment of end-stage knee osteoarthritis (OA). Lower limb neutral alignment has been a criterion to predict prosthesis life; however, there has been recent controversy over this. Some researchers believe that lower limb static alignment does not significantly affect prosthesis life and some researchers have found that dynamic mechanical alignment may affect prosthesis life, which needs to be further studied. Methods: Eighty-seven patients with knee OA were evaluated by a three-dimensional (3D) gait analysis system before TKA and six months after TKA, dynamic mechanical alignment and basic gait parameters were then calculated. Based on the static alignment of the lower limb on the postoperative X-radiographs, they were divided into a neutral alignment group (58 cases), varus alignment group (20 cases), and valgus alignment group (9 cases). Simple linear regression was used to assess the correlation between static and dynamic alignment. One-way analysis of variance (ANOVA) was used to compare the differences in gait parameters between and within groups. Results: Eighty-seven patients were followed up for an average of six months after the operation. There was no significant difference in all gait parameters among the three groups after TKA. There was no correlation found between static alignment and dynamic alignment/knee adduction moment (KAM) after TKA, although patients showed a significant linear correlation before operation. There was a significant linear correlation between dynamic alignment and KAM before and after the operation. Conclusions: Static alignment has no significant effect on postoperative gait function. Static alignment is no longer an effective predictor of the dynamic alignment or KAM six months after TKA, although they are correlated before TKA. The dynamic alignment allows for better prediction of KAM, which may be a risk factor for the life of the prosthesis.
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35
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Tensho K, Iwaasa T, Koyama S, Shimodaira H, Horiuchi H, Saito N, Takahashi J. Potential risk of medial cortex perforation due to peg position of morphometric tibial component in unicompartmental knee arthroplasty: a computer simulation study. Knee Surg Sports Traumatol Arthrosc 2022; 30:536-544. [PMID: 32865659 DOI: 10.1007/s00167-020-06242-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 08/14/2020] [Indexed: 02/14/2023]
Abstract
PURPOSE The purpose of this study is to evaluate the risk of medial tibial cortical perforation in unicompartmental knee arthroplasty (UKA) due to peg positions on the tibial tray of the Persona Partial Knee (PPK). METHODS Preoperative CT images of 60 patients and 60 osteoarthritic knees (30 male and 30 female patients) were used. A tibial multiplanar reconstruction (MPR) image was reconstructed in preoperative planning software, and the implant was placed in a virtual osteotomy plane. In addition to PPK, Zimmer Unicompartmental Knee (ZUK) and TRIBRID (TBD) were used for evaluation. The horizontal distances from the medial tibial cortex to the anterior and posterior pegs (APCD/PPCD, respectively) were measured under neutral, 3-degree varus, 3-degree valgus and 2 mm distal positions. The differences between implants under the same positions and between positions using the same implants were compared. The percentage of total cases with APCD/PPCD of less than 3 mm and the perforation risk rate were calculated. RESULTS The APCD of PPK was significantly shorter at all positions except for the varus position of TBD. The PPCD of PPK was significantly shorter at all positions compared to ZUK and TBD. There were no cases with an APCD of less than 3 mm. Except for varus positions, the perforation risk rate of PPCD was significantly higher for PPK than the other two implants. CONCLUSION The posterior pegs of the PPK are located more medially than the other two implants, which may result in perforation of the medial tibial cortex during implantation. Surgeons should consider the risk involved in the type of implant used.
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Affiliation(s)
- Keiji Tensho
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan.
| | - Tomoya Iwaasa
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan
| | - Suguru Koyama
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan
| | - Hiroki Shimodaira
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan
| | - Hiroshi Horiuchi
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan
| | - Naoto Saito
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan
| | - Jun Takahashi
- Department of Orthopedic Surgery, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, 390-8621, Japan
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Eckert JA, Bitsch RG, Sonntag R, Reiner T, Schwarze M, Jaeger S. The primary stability of the femoral component in cemented single and twin peg Oxford unicompartmental knee arthroplasty under adverse conditions. Bone Joint Res 2022; 11:82-90. [PMID: 35124977 PMCID: PMC8882328 DOI: 10.1302/2046-3758.112.bjr-2020-0507.r2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aims The cemented Oxford unicompartmental knee arthroplasty (OUKA) features two variants: single and twin peg OUKA. The purpose of this study was to assess the stability of both variants in a worst-case scenario of bone defects and suboptimal cementation. Methods Single and twin pegs were implanted randomly allocated in 12 pairs of human fresh-frozen femora. We generated 5° bone defects at the posterior condyle. Relative movement was simulated using a servohydraulic pulser, and analyzed at 70°/115° knee flexion. Relative movement was surveyed at seven points of measurement on implant and bone, using an optic system. Results At the main fixation zone, the twin peg shows less relative movement at 70°/115°. At the transition zone, relative movements are smaller for the single peg for both angles. The single peg shows higher compression at 70° flexion, whereas the twin peg design shows higher compression at 115°. X-displacement is significantly higher for the single peg at 115°. Conclusion Bony defects should be avoided in OUKA. The twin peg shows high resilience against push-out force and should be preferred over the single peg. Cite this article: Bone Joint Res 2022;11(2):82–90.
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Affiliation(s)
- Johannes Adrian Eckert
- Laboratory of Biomechanics and Implant Research, Centre for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany.,Orthopaedic University Hospital, Heidelberg University Hospital, Heidelberg, Germany
| | | | - Robert Sonntag
- Laboratory of Biomechanics and Implant Research, Centre for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Tobias Reiner
- Laboratory of Biomechanics and Implant Research, Centre for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany.,Orthopaedic University Hospital, Heidelberg University Hospital, Heidelberg, Germany
| | - Martin Schwarze
- Laboratory of Biomechanics and Implant Research, Centre for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany.,Orthopaedic University Hospital, Heidelberg University Hospital, Heidelberg, Germany
| | - Sebastian Jaeger
- Laboratory of Biomechanics and Implant Research, Centre for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
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Wong KC, Lee M, Liow L, Lo NN, Yeo SJ, Chen J. Bone-on-Bone Contact on Radiograph is not a Prerequisite for Successful Outcome in Fixed-Bearing Medial Unicompartmental Knee Arthroplasty-A 10-Year Follow-Up Study. J Knee Surg 2021; 36:658-666. [PMID: 34952551 DOI: 10.1055/s-0041-1740932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Patients without bone-on-bone osteoarthritis are excluded from mobile-bearing unicompartmental knee arthroplasty due to higher revision rates and poorer outcomes. However, we do not know if the same indication applies to fixed-bearing unicompartmental knee arthroplasty implants. Our study aims to compare functional outcomes and revision rates in patients with and without bone-on-bone arthritis undergoing fixed-bearing medial unicompartmental knee arthroplasty. MATERIALS AND METHODS We reviewed 153 fixed-bearing medial unicompartmental knee arthroplasties in a single institution. Patients were divided into four groups based on joint space remaining measured on preoperative radiographs. Group 1 included knees with bone-on-bone contact; group 2 included knees with less than 2 mm joint space; group 3 included knees with 2 to 4 mm joint space; group 4 included knees with more than 4 mm joint space. Patients were followed up for 10 years postoperatively and assessed using the Oxford Knee Score, the Functional Score and Knee Score from the Knee Society Clinical Rating Score, and the Short Form 36 Health Survey. RESULTS There was no difference in terms of demographic data and preoperative scores. Postoperative Knee Society Functional Score was found to be lower in group 1 as compared with the other groups. There was no difference between the four groups of patients in terms of Knee Society Knee Score, Oxford Knee Score, and Physical Component Summary and Mental Component Summary Scores from the Short Form 36 Health Survey. There was no difference in terms of survivorship free from all-cause revision at a minimum of 10 years' follow-up. CONCLUSION Symptomatic patients with varying degrees of arthritis on preoperative radiographs had comparable clinical outcomes. We conclude that symptomatic patients with clinical and radiographic evidence of medial compartment osteoarthritis of any grade can benefit from a fixed-bearing medial unicompartmental knee arthroplasty.
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Affiliation(s)
- Khai Cheong Wong
- Department of Orthopedic Surgery, Singapore General Hospital, Singapore
| | - Merrill Lee
- Department of Orthopedic Surgery, Singapore General Hospital, Singapore
| | - Lincoln Liow
- Department of Orthopedic Surgery, Singapore General Hospital, Singapore
| | - Ngai-Nung Lo
- Department of Orthopedic Surgery, Singapore General Hospital, Singapore
| | - Seng-Jin Yeo
- Department of Orthopedic Surgery, Singapore General Hospital, Singapore
| | - Jerry Chen
- Department of Orthopedic Surgery, Singapore General Hospital, Singapore
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Bernard-de-Villeneuve F, Kayikci K, Sappey-Marinier E, Lording T, Batailler C, Servien E, Lustig S. Health economic value of CT scan based robotic assisted UKA: a systematic review of comparative studies. Arch Orthop Trauma Surg 2021; 141:2129-2138. [PMID: 34274998 DOI: 10.1007/s00402-021-04066-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 07/08/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE The aim of this systematic review was to compare relevant health economic consequences of the CT-based robotic-arm-assisted system versus conventional Uni-compartmental Knee Arthroplasty (UKA). METHODS In November 2020, A PRISMA systematic review was conducted using four databases (Pubmed, Scopus, Cochrane and Google Scholar) to identify all comparative studies reporting health economic assessments, such as robotic system costs, consumable costs, surgical revision rate, operating time, length of stay, and inpatient care costs. RESULTS A total of nine comparative studies published between 2014 and 2020 were included in this systematic review. There was a moderate risk of bias as assessed using the ROBINS-I Tool. The CT-based robotic-arm-assisted system seemed to be associated with a lower risk of revision, decreased analgesia requirements during hospitalization, a shorter length of stay, and lower inpatient care costs compared to a conventional technique. CONCLUSION CT-based robotic-arm-assisted system for UKA appears to be an economically viable solution with a positive health economic impact as it tends to decrease revision rate compared to conventional UKA, improve post-operative rehabilitation and analgesia management. Post-operative inpatient care costs seem lower with the robotic-assisted system but depend on institutional case volume and differ among health systems. More studies are needed to confirm cost-effectiveness of CT-based robotic-arm-assisted system based on different health systems. LEVEL OF EVIDENCE Systematic review, Level IV.
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Affiliation(s)
- Florent Bernard-de-Villeneuve
- FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, 103 Grande rue de la Croix Rousse, 69004, Lyon, France
| | - Kayahan Kayikci
- FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, 103 Grande rue de la Croix Rousse, 69004, Lyon, France
| | - Elliot Sappey-Marinier
- FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, 103 Grande rue de la Croix Rousse, 69004, Lyon, France.
| | - Timothy Lording
- Melbourne Orthopaedic Group, 33 The Avenue, Windsor, VIC, 3181, Australia
| | - Cécile Batailler
- FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, 103 Grande rue de la Croix Rousse, 69004, Lyon, France
| | - Elvire Servien
- FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, 103 Grande rue de la Croix Rousse, 69004, Lyon, France.,LIBM - EA 7424, Interuniversity Laboratory of Biology of Mobility, Claude Bernard Lyon 1 University, Lyon, France
| | - Sébastien Lustig
- FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, 103 Grande rue de la Croix Rousse, 69004, Lyon, France.,Univ Lyon, Claude Bernard Lyon 1 University, IFSTTAR, LBMC UMR_T9406, F69622, Lyon, France
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Yamagami R, Inui HI, Taketomi S, Kono K, Kawaguchi K, Takagi K, Kage T, Sameshima S, Tanaka S. Implant Alignment and Patient Factors Affecting the Short-Term Patient-Reported Clinical Outcomes after Oxford Unicompartmental Knee Arthroplasty. J Knee Surg 2021; 34:1413-1420. [PMID: 32356292 DOI: 10.1055/s-0040-1709678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This study aims at clarifying implant alignment and other patient factors' influence on clinical outcomes, particularly on patient-reported outcomes (PRO), following Oxford unicompartmental knee arthroplasty (OUKA). A total of 142 patients after OUKA were divided into two groups according to the validated Japanese version of the knee injury and osteoarthritis outcome score (KOOS) for each subscale of pain, symptoms, and activities of daily living (ADL) at postoperative year 1 and 2: group 1 had ≥80 scores and group 2 had <80 scores. Postoperative clinical and radiographical findings were then compared among groups in each subscale. Using postoperative year 1 and 2 data, a multivariable logistic regression analysis was conducted to clarify factors for clinical outcomes' improvement. In the analysis of KOOS subscale of symptoms at postoperative year 1, gender distribution, preoperative body mass index, and postoperative maximum knee flexion angles differed significantly among groups. In the analysis for KOOS subscale of ADL, significant differences were observed in postoperative tibial component varus angles. Multivariable logistic regression analysis revealed that all of these parameters significantly related to ≥80 KOOS scores of each subscale at postoperative year 1. Additionally, at postoperative year 2, larger postoperative knee flexion angles and tibial component varus angles related to ≥80 KOOS subscale of symptoms and ADL were observed. In conclusion, tibial component's larger varus alignment was associated with the better PRO at both 1 and 2 years after OUKA. Importantly, larger postoperative knee flexion angle helped achieve good short-term PRO after OUKA.
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Affiliation(s)
- Ryota Yamagami
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - HIroshi Inui
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Shuji Taketomi
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kenichi Kono
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kohei Kawaguchi
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kentaro Takagi
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tomofumi Kage
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Shin Sameshima
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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Nakano N, Takayama K, Kuroda Y, Maeda T, Hashimoto S, Ishida K, Hayashi S, Hoshino Y, Matsushita T, Niikura T, Kuroda R, Matsumoto T. Preoperative varus deformity of the knee affects the intraoperative joint gap in unicompartmental knee arthroplasty. Knee 2021; 32:90-96. [PMID: 34455161 DOI: 10.1016/j.knee.2021.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/08/2021] [Accepted: 08/05/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND It is generally believed that contraction of the soft tissue structures on the medial side may occur in the knee with severe varus deformity. However, the relationship between the severity of varus deformity of the knee and the intraoperative soft tissue balance in unicompartmental knee arthroplasty (UKA) has not been well reported thus far. METHODS One hundred and three consecutive medial UKAs were enrolled. After the femoral trial prosthesis was placed, the component gap was measured at 10° (extension) and 120° (flexion) of flexion using a UKA tensor. The pre-osteotomy gap was then calculated from the thickness of the bone cut. Paired Student's t-test was used to compare the component gap, as well as the pre-osteotomy gap, in extension and those in flexion. The relationship between the preoperative Hip-Knee-Ankle (HKA) angle and the pre-osteotomy gap was analysed using Pearson's correlation coefficient and simple linear regression analysis. RESULTS The component gap in extension was significantly smaller than that in flexion while the pre-osteotomy gap in extension was significantly wider than that in flexion. There was a positive correlation between the severity of varus deformation in preoperative knee and the pre-osteotomy gap in extension, while there was no correlation between the preoperative HKA angle and the pre-osteotomy gap in flexion. CONCLUSIONS The tension of the medial tightness does not correlate with the degree of preoperative varus deformity in UKA.
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Affiliation(s)
- Naoki Nakano
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - Koji Takayama
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; Department of Orthopaedic Surgery, Anshin Hospital, 1-4-12, Minatojimaminami-machi, Chuo-ku, Kobe 650-0047, Japan
| | - Yuichi Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Toshihisa Maeda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Shingo Hashimoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Kazunari Ishida
- Department of Orthopaedic Surgery, Kobe Kaisei Hospital, 3-11-15, Shinoharakita-machi, Nada-ku, Kobe 657-0068, Japan
| | - Shinya Hayashi
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yuichi Hoshino
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Takehiko Matsushita
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Takahiro Niikura
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
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Ekhtiari S, Bozzo A, Madden K, Winemaker MJ, Adili A, Wood TJ. Unicompartmental Knee Arthroplasty: Survivorship and Risk Factors for Revision: A Population-Based Cohort Study with Minimum 10-Year Follow-up. J Bone Joint Surg Am 2021; 103:00004623-990000000-00342. [PMID: 34547009 DOI: 10.2106/jbjs.21.00346] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Operative management for end-stage knee osteoarthritis (OA) primarily consists of arthroplasty. Total knee arthroplasty (TKA) is the so-called gold standard for multicompartmental OA. In selected patients, specifically those with unicompartmental OA and no definite contraindications, realignment osteotomies and unicompartmental knee arthroplasty (UKA) are viable options. UKA offers several advantages over TKA, including preservation of both cruciate ligaments, faster recovery, and less osseous resection. The purpose of this study was to determine the survivorship of UKAs and risk factors for all-cause revision surgery in patients with a minimum follow-up of 10 years in a large population-based database. METHODS We performed a population-based cohort study using linked administrative databases in Ontario, Canada. We identified all UKAs performed from January 2002 through December 2006. All patients had a minimum 10-year follow-up. Demographic data and outcomes were summarized using descriptive statistics. We used a Cox proportional hazards model with the Fine and Gray method accounting for competing risks such as death to analyze the effect of surgical and patient factors on the risk of revision of UKA. RESULTS A total of 4,385 patients were identified as having undergone primary UKA from 2002 through 2006 in Ontario. Of these patients, 779 underwent revision surgery, for a cumulative risk for all-cause revision of 16.5% at 10 years (95% confidence interval [CI]: 15.4% to 17.7%). Mechanical loosening was the reason for 83.4% of all revisions. Male sex, diabetes, an age younger than 50 years, and cementless implants were significant risk factors for revision surgery. Residence in a rural or urban setting, income quintile, discharge destination, and type of OA were not associated with the risk of revision. Survivorship at 1, 5, 10, and 15 years was 97.2%, 90.5%, 83.5%, and 81.9%, respectively. CONCLUSIONS This study demonstrated a >80% long-term survivorship for UKA based on a large administrative database sample and identified important risk factors for failure including male sex, younger age, diabetes, and cementless fixation. This study found rates of survivorship similar to those previously reported in the literature, while identifying key risk factors for failure. Patient selection has always been identified as a key factor in ensuring successful UKA, and the risk factors identified in this study may help guide decision-making for surgeons and patients dealing with unicompartmental knee OA. LEVEL OF EVIDENCE Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Seper Ekhtiari
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Anthony Bozzo
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Kim Madden
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Research Institute of St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada
| | - Mitchell J Winemaker
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Hamilton Health Sciences, Hamilton, Ontario, Canada
| | - Anthony Adili
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Research Institute of St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada
| | - Thomas J Wood
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Hamilton Health Sciences, Hamilton, Ontario, Canada
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Rashed S, Lakhani S, Mann A, Best LMJ, Shehzad S, Saeed MZ. The Impact of the Largest National Joint Registry on Current Knee Replacement Longevity Estimates: An Analysis and Review of Knee Prosthesis Brand and Fixation Technique. J Arthroplasty 2021; 36:3168-3173.e1. [PMID: 34053753 DOI: 10.1016/j.arth.2021.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/28/2021] [Accepted: 05/01/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The UK National Joint Registry is the single largest joint registry in the world enrolling 1.3 million patients and recently reaching 17 years of follow-up data. Current knee prosthesis longevity estimates are based off smaller sized international registries and the impact of fixation type on prosthesis survival remains unclear. METHODS We used the UK National Joint Registry 17th annual report to calculate pooled mean survival estimates of total knee replacements (TKRs), unicondylar knee replacements (UKRs), and patellofemoral knee replacements at 10 and 15 years based on both construct brand and fixation technique (cemented vs uncemented). Independent t-testing was performed for significance. RESULTS All-cause survivorship of TKRs at 10 and 15 years is 96.7% and 95.4%, respectively. For UKRs it is 89.8% and 80.7% and for patellofemoral knee replacements it is 81.6% and 76.5%. In regard to fixation technique, cemented and uncemented TKRs show similar survivorship at both time points. For UKRs uncemented constructs showed improved survivorship compared to cemented at 10 years (92.7% vs 88.2%, P < .001). This was greatest among those <65 years of age. In fact, all construct types regardless of fixation showed increased rate of revision in those <65 years vs those ≥65 years. CONCLUSION We provide more accurate estimations for knee prosthesis survival and highlight that younger patients, particularly those receiving UKRs, are prone to greater revision risks. This data also suggests that uncemented fixation may offer improved joint survival in these patients.
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Affiliation(s)
- Sami Rashed
- Royal London Hospital, Barts Health NHS Trust, London, United Kingdom
| | - Saad Lakhani
- New Cross Hospital, Wolverhampton, United Kingdom
| | - Adam Mann
- Norwich Medical School, University of East Anglia, Norwich, Norfolk, United Kingdom
| | - Lawrence M J Best
- Royal Free and University College Medical School, London, United Kingdom
| | - Sarah Shehzad
- Royal Free and University College Medical School, London, United Kingdom
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Burnett Iii RA, Yang J, Courtney PM, Terhune EB, Hannon CP, Della Valle CJ. Costs of unicompartmental compared with total knee arthroplasty : a matched cohort study over ten years. Bone Joint J 2021; 103-B:23-31. [PMID: 34053283 DOI: 10.1302/0301-620x.103b6.bjj-2020-2259.r1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS The aim of this study was to compare ten-year longitudinal healthcare costs and revision rates for patients undergoing unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA). METHODS The Humana database was used to compare 2,383 patients undergoing UKA between 2007 and 2009, who were matched 1:1 from a cohort of 63,036 patients undergoing primary TKA based on age, sex, and Elixhauser Comorbidity Index. Medical and surgical complications were tracked longitudinally for one year following surgery. Rates of revision surgery and cumulative mean healthcare costs were recorded for this period of time and compared between the cohorts. RESULTS Patients undergoing TKA had significantly higher rates of manipulation under anaesthesia (3.9% vs 0.9%; p < 0.001), deep vein thrombosis (5.0% vs 3.1%; p < 0.001), pulmonary embolism (1.5% vs 0.8%; p = 0.001), and renal failure (4.2% vs 2.2%; p < 0.001). Revision rates, however, were significantly higher for UKA at five years (6.0% vs 4.2%; p = 0.007) and ten years postoperatively (6.5% vs 4.4%; p = 0.002). Longitudinal-related healthcare costs for patients undergoing TKA were greater than for those undergoing UKA at one year ($24,771 vs $22,071; p < 0.001) and five years following surgery ($26,549 vs $25,730; p < 0.001); however, the mean costs of TKA were comparable to UKA at ten years ($26,877 vs $26,891; p = 0.425). CONCLUSION Despite higher revision rates, patients undergoing UKA had lower mean healthcare costs than those undergoing TKA up to ten years following the procedure, at which time costs were comparable. In the era of value-based care, surgeons and policymakers should be aware of the costs involved with these procedures. UKA was associated with fewer complications at one year postoperatively but higher revision rates at five and ten years. While UKA was significantly less costly than TKA at one and five years, costs at ten years were comparable with a mean difference of only $14. Lowering the risk of revision surgery should be targeted as a source of cost savings for both UKA and TKA as the mean related healthcare costs were 2.5-fold higher in patients requiring revision surgery. Cite this article: Bone Joint J 2021;103-B(6 Supple A):23-31.
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Affiliation(s)
- Robert A Burnett Iii
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - JaeWon Yang
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - P Maxwell Courtney
- Department of Orthopaedic Surgery, Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
| | - E Bailey Terhune
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Charles P Hannon
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Craig J Della Valle
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
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Kunze KN, Farivar D, Premkumar A, Cross MB, Della Valle AG, Pearle AD. Comparing clinical and radiographic outcomes of robotic-assisted, computer-navigated and conventional unicompartmental knee arthroplasty: A network meta-analysis of randomized controlled trials. J Orthop 2021; 25:212-219. [PMID: 34045825 DOI: 10.1016/j.jor.2021.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/29/2021] [Accepted: 05/02/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction The purpose was to compare robotic assisted (RA), computer navigated (CN), and conventional UKA techniques. Methods Databases were queried for data on study characteristics, UKA systems, complications, and tibiofemoral alignment. Results Four RA and six CN RCTs were identified. No significant differences were found in operative time, tibiofemoral alignment, and reoperation rates when comparing RA or CN to conventional UKA. RA UKA resulted in a significantly lower risk of complications compared to conventional UKA. Conclusions RA UKA results in fewer complications than conventional UKA with a clinically significant increase in operative time. All groups were similar in remaining evaluated parameters.
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Affiliation(s)
- Kyle N Kunze
- Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Daniel Farivar
- Department of Orthopedic Surgery, Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
| | - Ajay Premkumar
- Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Michael B Cross
- Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | | | - Andrew D Pearle
- Department of Orthopedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
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A Retrospective Study of Unicompartmental Knee Arthroplasty Functional Outcome and the Incidence of Medial Meniscus Posterior Root Tear in Spontaneous Osteonecrosis of the Knee. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6614122. [PMID: 33997024 PMCID: PMC8110405 DOI: 10.1155/2021/6614122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 04/16/2021] [Indexed: 11/29/2022]
Abstract
Background Spontaneous osteonecrosis of the knee (SONK) can lead to severe knee osteoarthritis predominantly localized to the medial compartment. We aimed to determine whether unicompartmental knee arthroplasty was an effective treatment for primary SONK. Methods We analyzed the functional outcomes in 23 patients with SONK (with a magnetic resonance imaging- (MRI-) confirmed diagnosis) who underwent UKA at a single center. The mean follow-up time was 67 months post-UKA. Results Significant improvements in function were indicated by reduced Oxford Knee and Visual Analogue Scale scores after UKA, and there were no specific complications after the procedures. The incidence of MRI-identified medial meniscus posterior root tear (MMPRT) was 69.6% (16/23). Conclusion Unicompartmental arthroplasty for SONK is less destructive to the native knee structure than total knee arthroplasty but can achieve comparable prognosis with strict patient selection. While the precise etiology of SONK is unknown, one theory posits that a MMPRT may change the biomechanical circumstances of the knee joint, leading to osteonecrosis. Although not confirmatory, the high prevalence rate suggests that MMPRT may have a key role in the development of SONK. UKA is an effective treatment option for SONK, resulting in significant functional improvement. Long-term (>10 years) outcomes should be investigated.
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Sessa V, Celentano U. Unicompartmental knee arthroplasty: all-poly versus metal-backed tibial component-a long-term follow-up study. INTERNATIONAL ORTHOPAEDICS 2021; 45:3063-3068. [PMID: 33877407 DOI: 10.1007/s00264-021-05031-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION While considered a satisfactory solution, unicompartmental knee arthroplasty (UKA) still raises concerns in regard to its durability. These concerns particularly focus on the tibial component. This study aims to compare two different cemented tibial components belonging to the same UKA design: all polyethylene (AP) versus metal backed (MB), at a long-term follow-up. MATERIALS AND METHODS We retrospectively reviewed 143 successive patients, 83 of which underwent surgery with AP tibial component UKA (37 males, 46 females), and 67 with MB ones (17 males, 50 females). All implants had the same prosthetic design (Accuris UKA, Smith e Nephew) with identical femoral oxinium component but different tibial component, AP or MB. The KSS and KOOS were assessed at a mean of 11.5-year follow-up and compared to pre-operative, post-operative, and one year evaluation. Statistical analysis was performed with SPSS for Mac (version 17.0). To assess potential statistically significant differences, t test was used and significance was set at P < 0.05. RESULTS Final KSS at a mean of 11.5-year follow-up was 94.27 for the AP group and 96.12 for the MB ones. The final KOOS was 87 for AP components and 89.67 for the MB group. These results demonstrated, in all cases, statistically significant better results for MB tibial components compared to AP regarding KSS (P = 0.048), KOOS (P = 0.000), and pain (P = 0.014) at the 11.5-year follow-up. Survivorship for AP tibial component implants was 97.6%, while it was 89.5% for MB ones. CONCLUSION While the survivorship rate has been found to be greater for AP implants compared to MB tibial components, this study reveals statistically better functional results according to KSS and KOOS, and pain, at a long-term follow-up for MB implants.
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Affiliation(s)
- Vincenzo Sessa
- S. Giovanni Calibita Fatebenefratelli Hospital, Isola Tiberina, 00186, Rome, Italy.
| | - Umberto Celentano
- S. Giovanni Calibita Fatebenefratelli Hospital, Isola Tiberina, 00186, Rome, Italy
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Is It Worth Delaying Total Knee Replacement as Late as Possible? A Cost-Effectiveness Analysis Using a Markov Model in the Indian Setting. Value Health Reg Issues 2021; 24:173-180. [PMID: 33831792 DOI: 10.1016/j.vhri.2020.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/02/2020] [Accepted: 12/27/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Total knee replacement (TKR) is often delayed in younger patients in an attempt to prolong the longevity of the prosthesis and avoid the risk of revision. But delaying a TKR might compromise the quality of life of young patients who are otherwise active and healthy. METHODS We built a Markov decision model to study the simulated clinical course of a 50-year-old patient with severe unilateral knee osteoarthritis who could be either treated with conservative therapies or with a TKR at some point in time. An Indian healthcare payer perspective model was used, and lifetime costs (in Indian rupees), quality-adjusted life-years (QALYs), and incremental cost-effectiveness ratio (ICER) were calculated. RESULTS In the base case scenario, patients who did not receive a TKR had a total lifetime cost of ₹216 709 and accumulated 13.59 QALYS in their lifetime. Those who received a TKR without delay (at age 50) accumulated 16.71 QALYS in their lifetime with an ICER of ₹9789 per QALY. When TKR was delayed, the total QALYs decreased, and ICER increased with each year of delay. But the cumulative risk of revision decreased from 27.4% when TKR was performed at 50 years to 10.0% when TKR was done at 70 years. CONCLUSION Our analysis found that TKR is a cost-effective procedure when the healthcare payer is willing to pay at least ₹9789 ($132) per QALY. The results also suggested that an early TKR is preferred to a delayed TKR despite the higher incidence of revisions.
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Tille E, Beyer F, Auerbach K, Tinius M, Lützner J. Better short-term function after unicompartmental compared to total knee arthroplasty. BMC Musculoskelet Disord 2021; 22:326. [PMID: 33810795 PMCID: PMC8019176 DOI: 10.1186/s12891-021-04185-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/22/2021] [Indexed: 11/24/2022] Open
Abstract
Background Unicompartmental knee arthroplasty (UKA) is an established treatment option for patients with unicompartmental osteoarthritis (OA). However, strict patient selection is crucial for its success. The proposed advantages include nearly natural knee kinematics, faster rehabilitation and better functional outcomes. Despite the aforementioned facts and it’s proven cost-effectiveness, there are still hesitations for the use of UKA as an alternative to total knee arthroplasty (TKA). Key objectives of this study were therefore to assess clinical and patient-reported outcome (PRO) as well as patient’s satisfaction after medial UKA in comparison to TKA. Methods To assess the outcome after UKA we conducted a prospective multi-center study. 116 patients with unicompartmental OA and indication for UKA were included. Overall 54 females and 62 males with an average age of 62.7 years (±9.8) and an average body mass index (BMI) of 29.2 (± 3.7) were recruited. Clinical results and PRO were assessed using the Knee Society Score (KSS). Follow-ups took place 3 months, 1 and 2 years after surgery including clinical examination, radiographs, assessment of PRO and adverse events. Pain and satisfaction was evaluated using a visual analog scale (VAS, 0 (worst) to 10 (best)). For comparison with TKA a propensity score matched-pair analysis was performed to eliminate confounders. Matching criteria were gender, patient’s age, BMI and comorbidities. A total of 116 matched-pairs were analysed. Results There was no revision in the UKA group until 2 years after surgery. Revision rates were higher in the TKA group (0.6%). Preoperative KSS-Scores were higher within the UKA cohort (p < 0.001). After surgical treatment, PROMs displayed a significant improvement (p < 0,001) in both cohorts. Regarding the Knee-Score (Pain, Alignment, ROM) we observed no differences between cohorts after 12 months. The Function-Score demonstrated significantly better results in the UKA cohort (UKA vs. TKA 95 vs 80, p < 0.001). Patient satisfaction was also higher in UKA patients (UKA vs TKA 9.0 vs 8.8, p = 0.019). Conclusion Patients of both cohorts showed high satisfaction after knee arthroplasty. UKA resulted in higher function scores compared to TKA without increased revision rate during short-term follow-up. Therefore, UKA is a good treatment option for unicompartmental OA. Trial registration Clinicaltrials.gov, NCT04598568. Registered 22 October 2020 - Retrospectively registered.
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Affiliation(s)
- Eric Tille
- University Center for Orthopaedic, Trauma- and Plastic Surgery, University Medicine Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
| | - Franziska Beyer
- University Center for Orthopaedic, Trauma- and Plastic Surgery, University Medicine Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Kai Auerbach
- Arthromed Praxisklinik Chemnitz, Chemnitz, Germany
| | | | - Jörg Lützner
- University Center for Orthopaedic, Trauma- and Plastic Surgery, University Medicine Carl Gustav Carus Dresden, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
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Kazarian GS, Barrack RL, Barrack TN, Lawrie CM, Nunley RM. Radiological outcomes following manual and robotic-assisted unicompartmental knee arthroplasty. Bone Jt Open 2021; 2:191-197. [PMID: 33739128 PMCID: PMC8009894 DOI: 10.1302/2633-1462.23.bjo-2020-0205.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Aims The purpose of this study was to compare the radiological outcomes of manual versus robotic-assisted medial unicompartmental knee arthroplasty (UKA). Methods Postoperative radiological outcomes from 86 consecutive robotic-assisted UKAs (RAUKA group) from a single academic centre were retrospectively reviewed and compared to 253 manual UKAs (MUKA group) drawn from a prior study at our institution. Femoral coronal and sagittal angles (FCA, FSA), tibial coronal and sagittal angles (TCA, TSA), and implant overhang were radiologically measured to identify outliers. Results When assessing the accuracy of RAUKAs, 91.6% of all alignment measurements and 99.2% of all overhang measurements were within the target range. All alignment and overhang targets were simultaneously met in 68.6% of RAUKAs. When comparing radiological outcomes between the RAUKA and MUKA groups, statistically significant differences were identified for combined outliers in FCA (2.3% vs 12.6%; p = 0.006), FSA (17.4% vs 50.2%; p < 0.001), TCA (5.8% vs 41.5%; p < 0.001), and TSA (8.1% vs 18.6%; p = 0.023), as well as anterior (0.0% vs 4.7%; p = 0.042), posterior (1.2% vs 13.4%; p = 0.001), and medial (1.2% vs 14.2%; p < 0.001) overhang outliers. Conclusion Robotic system navigation decreases alignment and overhang outliers compared to manual UKA. Given the association between component placement errors and revision in UKA, this strong significant improvement in accuracy may improve implant survival. Level of Evidence: III Cite this article: Bone Jt Open 2021;2-3:191–197.
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Affiliation(s)
- Gregory S Kazarian
- Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri, USA.,Hospital for Special Surgery, New York, New York, USA
| | - Robert L Barrack
- Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Toby N Barrack
- Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Charles M Lawrie
- Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Ryan M Nunley
- Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri, USA
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Asokan A, Plastow R, Kayani B, Radhakrishnan GT, Magan AA, Haddad FS. Cementless knee arthroplasty: a review of recent performance. Bone Jt Open 2021; 2:48-57. [PMID: 33537676 PMCID: PMC7842161 DOI: 10.1302/2633-1462.21.bjo-2020-0172.r1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cementless knee arthroplasty has seen a recent resurgence in popularity due to conceptual advantages, including improved osseointegration providing biological fixation, increased surgical efficiency, and reduced systemic complications associated with cement impaction and wear from cement debris. Increasingly younger and higher demand patients are requiring knee arthroplasty, and as such, there is optimism cementless fixation may improve implant survivorship and functional outcomes. Compared to cemented implants, the National Joint Registry (NJR) currently reports higher revision rates in cementless total knee arthroplasty (TKA), but lower in unicompartmental knee arthroplasty (UKA). However, recent studies are beginning to show excellent outcomes with cementless implants, particularly with UKA which has shown superior performance to cemented varieties. Cementless TKA has yet to show long-term benefit, and currently performs equivalently to cemented in short- to medium-term cohort studies. However, with novel concepts including 3D-printed coatings, robotic-assisted surgery, radiostereometric analysis, and kinematic or functional knee alignment principles, it is hoped they may help improve the outcomes of cementless TKA in the long-term. In addition, though cementless implant costs remain higher due to novel implant coatings, it is speculated cost-effectiveness can be achieved through greater surgical efficiency and potential reduction in revision costs. There is paucity of level one data on long-term outcomes between fixation methods and the cost-effectiveness of modern cementless knee arthroplasty. This review explores recent literature on cementless knee arthroplasty, with regards to clinical outcomes, implant survivorship, complications, and cost-effectiveness; providing a concise update to assist clinicians on implant choice. Cite this article: Bone Jt Open 2021;2(1):48–57.
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Affiliation(s)
- Ajay Asokan
- Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.,Department of Orthopaedic Surgery, The Princess Grace Hospital, London, UK
| | - Ricci Plastow
- Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.,Department of Orthopaedic Surgery, The Princess Grace Hospital, London, UK
| | - Babar Kayani
- Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.,Department of Orthopaedic Surgery, The Princess Grace Hospital, London, UK
| | - Ganan T Radhakrishnan
- Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.,Department of Orthopaedic Surgery, The Princess Grace Hospital, London, UK
| | - Ahmed A Magan
- Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.,Department of Orthopaedic Surgery, The Princess Grace Hospital, London, UK
| | - Fares S Haddad
- Department of Trauma and Orthopaedic Surgery, University College Hospital, London, UK.,Department of Orthopaedic Surgery, The Princess Grace Hospital, London, UK
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