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Marullo M, Russo A, Spreafico A, Romagnoli S. Lateral Unicompartmental Knee Arthroplasty for Osteoarthritis Secondary to Lateral Meniscectomy: High Functional Results and Survivorship and Low Osteoarthritis Progression at a Mean 10 Years of Follow-up. J Bone Joint Surg Am 2024; 106:992-999. [PMID: 38512989 DOI: 10.2106/jbjs.23.00764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
BACKGROUND Meniscectomy, whether partial or total, is a common knee surgery, but it considerably increases the risk of knee osteoarthritis (OA). Lateral meniscectomy has more severe consequences than medial meniscectomy, leading to faster OA progression and worse clinical outcomes. Unicompartmental knee arthroplasty (UKA) is a suitable treatment option for lateral OA and has demonstrated better outcomes than total knee arthroplasty (TKA). The aims of this study were to evaluate the clinical and functional results, OA progression in the medial compartment, and implant survivorship following lateral UKA in patients with OA secondary to lateral meniscectomy and to compare these outcomes with those of patients who underwent lateral UKA for primary lateral OA. METHODS Between 2001 and 2017, 214 lateral UKAs were performed. Of these, 42 were performed for OA secondary to lateral meniscectomy. The control group was composed of patients who underwent lateral UKA for primary lateral OA and was formed through a 1:1 case-control matching process based on sex, age, body mass index, and operation date. The outcomes that were studied included range of motion, Knee Society Score, University of California Los Angeles (UCLA) Activity Score, Tegner Activity Scale, Forgotten Joint Score, visual analog scale for pain, OA progression in the medial compartment, and implant survivorship. RESULTS At a mean follow-up of 10.2 years, both groups demonstrated significant improvements (p < 0.01) after lateral UKA in all clinical and functional scores except the UCLA Activity Score and Tegner Activity Scale. No significant differences in clinical and functional scores were found between the groups. However, patients with OA secondary to meniscectomy exhibited significantly less OA progression in the medial compartment (p = 0.035) and higher 10-year implant survival (97.6% versus 83.3%). CONCLUSIONS Lateral UKA is an effective treatment option for OA secondary to lateral meniscectomy, providing excellent functional outcomes and survivorship. Patients with post-meniscectomy OA exhibited less OA progression in the medial compartment than patients with primary OA and, consequently, had better 10-year implant survivorship. LEVEL OF EVIDENCE Therapeutic Level III . See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Matteo Marullo
- Department of Joint Replacement, IRCCS Galeazzi Orthopedic Institute, Milano, Italy
| | - Antonio Russo
- Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Andrea Spreafico
- Department of Joint Replacement, IRCCS Galeazzi Orthopedic Institute, Milano, Italy
| | - Sergio Romagnoli
- Department of Joint Replacement, IRCCS Galeazzi Orthopedic Institute, Milano, Italy
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Albishi W, AbuDujain NM, Aldhahri M, Alzeer M. Unicompartmental knee replacement: controversies and technical considerations. ARTHROPLASTY 2024; 6:21. [PMID: 38693586 PMCID: PMC11064323 DOI: 10.1186/s42836-024-00242-6] [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: 11/28/2023] [Accepted: 02/20/2024] [Indexed: 05/03/2024] Open
Abstract
BACKGROUND Unicompartmental knee replacement (UKR) is one of the effective interventions for the treatment of symptomatic knee osteoarthritis. Moreover, it has multiple advantages over total knee arthroplasty (TKA), including reduced intraoperative blood loss, decreased risk of transfusion, and faster recovery. This study aimed to discuss critical technical considerations regarding UKR and some of the controversies and updates. METHODS We conducted a review to provide an overview of the controversies and technical considerations about UKR in several aspects. Only peer-reviewed articles were included, up to December 2023 using PubMed, Google Scholar, ERIC, and Cochrane database for systematic reviews databases. RESULT UKR is associated with superior patient-reported clinical and functional outcomes, as well as shorter hospital stays, fewer postoperative complications, and revealed favorable outcomes in patients' return to sport. The choice between mobile- and fixed-bearing prostheses depends, in part, on the surgeon's preference. The mobile-bearing UKR is a less constrained prosthesis and can potentially result in less wear, but it is more technically demanding. While no significant difference between mobile-bearing versus fixed-bearing prostheses, cementless is superior to cemented design. Furthermore, UKR can be a good alternative for high tibial osteotomy (HTO) and still can be considered after a failed HTO. Lastly, recent reviews have shown a revision rate comparable to that of TKA. This is probably influenced by Improved comprehension of the best indications, patient selection criteria, as well as of the design, materials, and technological advances. CONCLUSION UKR treatment for unicompartmental knee osteoarthritis is secure and effective. Based on clinical and functional outcomes, decreased morbidity and mortality, and cost-effectiveness, long-term studies suggest that UKR is superior to TKA. Further investigation in this area is warranted.
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Affiliation(s)
- Waleed Albishi
- Department of Orthopedic Surgery, College of Medicine, King Saud University, Riyadh, 11362, Saudi Arabia
| | - Nasser M AbuDujain
- Department of Family and Community Medicine, College of Medicine, King Saud University, Riyadh, 2925, Saudi Arabia.
| | - Mohammed Aldhahri
- Department of Orthopedic Surgery, College of Medicine, King Saud University, Riyadh, 11362, Saudi Arabia
| | - Meshari Alzeer
- College of Medicine, King Saud University, Riyadh, 11362, Saudi Arabia
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Kokubu Y, Kawahara S, Hamai S, Akasaki Y, Sato T, Nakashima Y. Small change in the arithmetic hip-knee-ankle angle during unicompartmental knee arthroplasty improves early postoperative functional outcomes. Arch Orthop Trauma Surg 2024; 144:2297-2304. [PMID: 38630252 DOI: 10.1007/s00402-024-05309-2] [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: 02/13/2024] [Accepted: 03/24/2024] [Indexed: 05/16/2024]
Abstract
INTRODUCTION The optimal lower-limb alignment after unicompartmental knee arthroplasty (UKA) remains controversial. This study aimed to investigate the optimal lower-limb alignment for functional improvement in the early post-UKA period. We hypothesized that a small change (Δ) in the arithmetic hip-knee-ankle (aHKA) angle during surgery would result in better postoperative knee function. MATERIALS AND METHODS This single-centered, retrospective study analyzed 91 patients (91 knees) who underwent UKA from April 2021 and December 2022. Preoperative and postoperative standing whole-leg radiographs were used to evaluate the mechanical HKA angle and aHKA angle. The aHKA angle was calculated from the medial proximal tibial angle (MPTA) and lateral distal femoral angle (LDFA). We defined restored aHKA angle as a postoperative aHKA angle within ± 3° of the preoperative aHKA angle. Functional improvement was evaluated using the preoperative and one-year postoperative Knee Society Scoring 2011 (KSS 2011). A multivariate regression analysis was performed to investigate the optimal lower-limb alignment for functional improvement. RESULT Postoperative restored aHKA angle (p = 0.020) was the only significant factor for improved KSS 2011 scores. Postoperative restored aHKA angle was obtained in 64 patients (70%). ΔMPTA (p < 0.001) and ΔLDFA (p = 0.037) were significant factors associated with a postoperative restored aHKA angle. CONCLUSIONS UKA restores the native knee, including resurfacing constitutional alignment and medial collateral ligament tension. Minimal change in the aHKA angle during UKA improves the functional outcomes of the knee during the early postoperative period, consistent with the minimally invasive surgical concept of UKA.
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Affiliation(s)
- Yasuhiko Kokubu
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Shinya Kawahara
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Satoshi Hamai
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yukio Akasaki
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Taishi Sato
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yasuharu Nakashima
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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Dong M, Fan H, Yang D, Sun X, Yan C, Feng Y. Comparison of spatiotemporal, kinematic, and kinetic gait characteristics in total and unicompartmental knee arthroplasty during level walking: A systematic review and meta-analysis. Gait Posture 2023; 104:58-69. [PMID: 37321113 DOI: 10.1016/j.gaitpost.2023.06.005] [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: 09/29/2022] [Revised: 03/26/2023] [Accepted: 06/05/2023] [Indexed: 06/17/2023]
Abstract
PURPOSE This meta-analysis was performed to compare the spatiotemporal, kinematic, and kinetic gait characteristics during level walking between total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA). METHODS An electronic database literature search was performed to screen clinical trials which were included the studies evaluating not only spatiotemporal, kinematic, and kinetic gait parameters, but also knee range of motion and knee score (Knee Society Score and Oxford Knee Score, i.e., KSS and OKS). The data analysis was performed using statistical software Stata 14.0 and Review Manager 5.4. RESULTS Thirteen studies (369 knees) that met the criteria were eventually included in this meta-analysis. The results revealed significant differences between UKA and TKA with regard to walking speed (P = 0.04), stride length (P = 0.02), maximum knee flexion at loading (P = 0.001), the 1st peak of vert-GRF (P = 0.006), the 1st valley of vert-GRF (P = 0.007), knee internal rotational moment (P = 0.04), knee extension (P < 0.00001), and KSS Function score (P = 0.05). In contrast, there were no statistical differences in the remaining spatiotemporal, kinematic, and kinetic gait parameters. CONCLUSION Medial UKA design is superior to TKA design with regard to walking speed, stride length, maximum knee flexion at loading, the 1st peak and the 1st valley of vert-GRF, knee internal rotational moment, knee extension, and KSS Function score. And it could provide a stronger basis for physicians to make clinical decisions.
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Affiliation(s)
- Mingjie Dong
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Hao Fan
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Dinglong Yang
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Xiaoyu Sun
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Chaochao Yan
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Yi Feng
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, 030000 Taiyuan, China.
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Xie T, Jiao X, Yao X, Li Z, An S, Cao G. How much the leg length has changed after the MOUKA through measurement of the full length radiographs? Beware of splicing error. BMC Musculoskelet Disord 2023; 24:343. [PMID: 37138280 PMCID: PMC10155376 DOI: 10.1186/s12891-023-06472-0] [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: 02/13/2023] [Accepted: 04/27/2023] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND Leg length change after knee arthroplasty is one of the most concerned problems for patients and doctors. However, as there was only one literture focused on the leg length change after unicompartmental knee arthroplasty, we aimed to clarify the leg length change after medial mobile-bearing unicompartmental knee arthroplasty (MOUKA) using a novel double calibration method. METHODS We enrolled patients who underwent MOUKA and had taken full-length radiographs in a standing position prior to and at 3 months after the operation. We eliminated the magnification by a calibrator and corrected the longitudinal splicing error by measuring the femur and tibia lengths before and after operation. Perceived leg length change was collected 3 months after operation. Bearing thickness, preoperative joint line convergence angle, preoperative and postoperative varus angles, flexion contracture and Oxford knee score (OKS) were also collected. RESULTS From June 2021 to February 2022, 87 patients were enrolled.76 (87.4%) of them showed an increase with an average of 0.32 cm (range from -0.30 cm to 1.05 cm) in leg length change. The lengthening was strongly correlated with the degree of varus deformity and its correction value (r = 0.81&0.92, P < 0.01). Only 4 (4.6%) patients perceived leg length lengthening after operation. There was no difference in OKS between the patients who had an increase in leg length and those who had a decrease (P = 0.99). CONCLUSIONS Majority of patients only experienced a slight increase in leg length after MOUKA, and such an increase did not affect patients' perception and short-term function.
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Affiliation(s)
- Tianlang Xie
- Department of Orthopedics, Xuanwu Hospital Capital Medical University, 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Xufeng Jiao
- Department of Orthopedics, Xuanwu Hospital Capital Medical University, 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Xiaomei Yao
- Department of Health Research Methods Evidence and Impact, McMaster University, Hamilton, ON, Canada
- Center for Clinical Practice Guideline Conduction and Evaluation, Children's Hospital of Fudan University, Shanghai, China
| | - Zheng Li
- Department of Orthopedics, Xuanwu Hospital Capital Medical University, 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Shuai An
- Department of Orthopedics, Xuanwu Hospital Capital Medical University, 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Guanglei Cao
- Department of Orthopedics, Xuanwu Hospital Capital Medical University, 45 Changchun Street, Xicheng District, Beijing, 100053, China.
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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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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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Obesity increases the risk of conversion to total knee arthroplasty after unicompartimental knee arthroplasty: a meta-analysis. Knee Surg Sports Traumatol Arthrosc 2022; 30:3945-3957. [PMID: 34718836 DOI: 10.1007/s00167-021-06780-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/14/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE The aim of this meta-analysis was to to determine the influence of obesity on patient outcome and implant survivorship after primary unicompartmental knee arthroplasty (UKA). METHODS A PRISMA systematic review was conducted by searching the Medline (PubMed), EMBASE, and Cochrane electronic databases to identify clinical studies investigating the effect of obesity on outcomes after UKA. Data were collected on aspecifically designed extraction form. Methodological quality was assessed using the Methodological Index for Nonrandomized Studies score. Quantitative meta-analysis was carried out using RevMan 5.4 software. RESULTS A total of 17 studies were included; 43,845 primary UKA patients were classified by their BMI: on-obese (BMI 25 to < 30 kg/m2); obese (BMI 30 to < 35 kg/m2); severely obese (BMI > 35 kg/m2). Pooled analysis showed no statistically significant difference in Knee Society Score (KSS) pain in the obese (n.s.) and the severely obese (n.s.) group compared to the non-obese group, while the KSS function score was lower in the severely obese (P = 0.0002) compared to the obese (P = 0.06) and the non-obese group. Postoperative Oxford Knee Score (OKS) was lower in the obese group (P = 0.01) but not in the severely obese group (P = 0.16). Postoperative Range of Motion (ROM) was comparable in the obese and non-obese group (P = 0.16). Implant survival at 10 years follow-up was significantly lower in the obese (82.5-95.3%; P < 0.0001) and the severely obese group (87.5-93.8%; P < 0.0001) thanthe non-obese group (83.6-98.6%). CONCLUSION Obesity and severe obesity were associated with significantly higher revision and lower implant survival rates. Obesity did not influence clinical and most functional outcomes after UKA, whereas KSS function score was significantly lower only for the severely obese patient group. LEVEL OF EVIDENCE III, meta-analysis.
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Kavanagh MD, Abola MV, Tanenbaum JE, Knapik DM, Fitzgerald SJ, Wera GD. Unicompartmental Knee Arthroplasty in Octogenarians versus Younger Patients: A Comparison of 30-Day Outcomes. J Knee Surg 2022; 35:401-408. [PMID: 32838455 DOI: 10.1055/s-0040-1715110] [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
As the United States' octogenarian population (persons 80-89 years of age) continues to grow, understanding the risk profile of surgical procedures in elderly patients becomes increasingly important. The purpose of this study was to compare 30-day outcomes following unicompartmental knee arthroplasty (UKA) in octogenarians with those in younger patients. The American College of Surgeons National Surgical Quality Improvement Program database was queried. All patients, aged 60 to 89 years, who underwent UKA from 2005 to 2016 were included. Patients were stratified by age: 60 to 69 (Group 1), 70 to 79 (Group 2), and 80 to 89 years (Group 3). Multivariate regression models were estimated for the outcomes of hospital length of stay (LOS), nonhome discharge, morbidity, reoperation, and readmission within 30 days following UKA. A total of 5,352 patients met inclusion criteria. Group 1 status was associated with a 0.41-day shorter average adjusted LOS (99.5% confidence interval [CI]: 0.67-0.16 days shorter, p < 0.001) relative to Group 3. Group 2 status was not associated with a significantly shorter LOS compared with Group 3. Both Group 1 (odds ratio [OR] = 0.15, 99.5% CI: 0.10-0.23) and Group 2 (OR = 0.33, 99.5% CI: 0.22-0.49) demonstrated significantly lower adjusted odds of nonhome discharge following UKA compared with Group 3. There was no significant difference in adjusted odds of 30-day morbidity, readmission, or reoperation when comparing Group 3 patients with Group 1 or Group 2. While differences in LOS and nonhome discharge were seen, octogenarian status was not associated with increased adjusted odds of 30-day morbidity, readmission, or reoperation. Factors other than age may better predict postoperative complications following UKA.
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Affiliation(s)
- Michael D Kavanagh
- Department of Orthopaedic Surgery, School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Matthew V Abola
- Department of Orthopaedic Surgery, School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Joseph E Tanenbaum
- Department of Orthopaedic Surgery, School of Medicine, Case Western Reserve University, Cleveland, Ohio.,Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Derrick M Knapik
- Department of Orthopaedic Surgery, School of Medicine, Case Western Reserve University, Cleveland, Ohio.,Department of Orthopaedic Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio.,Department of Orthopaedic Surgery, MetroHealth Medical Center, Cleveland, Ohio
| | - Steven J Fitzgerald
- Department of Orthopaedic Surgery, School of Medicine, Case Western Reserve University, Cleveland, Ohio.,Department of Orthopaedic Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio
| | - Glenn D Wera
- Department of Orthopaedic Surgery, School of Medicine, Case Western Reserve University, Cleveland, Ohio.,Department of Orthopaedic Surgery, MetroHealth Medical Center, Cleveland, Ohio
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Wu LP, Mayr HO, Zhang X, Huang YQ, Chen YZ, Li YM. Knee Scores of Patients with Non-Lateral Compartmental Knee Osteoarthritis Undergoing Mobile, Fixed-Bearing Unicompartmental Knee and Total Knee Arthroplasties: A Randomized Controlled Trial. Orthop Surg 2021; 14:73-87. [PMID: 34870364 PMCID: PMC8755879 DOI: 10.1111/os.13111] [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] [Received: 11/10/2020] [Revised: 04/21/2021] [Accepted: 05/26/2021] [Indexed: 11/29/2022] Open
Abstract
Objective To evaluate knee scores and clinical efficacies of patients with non‐lateral unicompartmental knee osteoarthritis (OA) who randomly underwent mobile‐bearing (MB) unicompartmental knee arthroplasty (UKA), fixed‐bearing (FB) UKA, and total knee arthroplasty (TKA). Methods From September 2015 to February 2017, a prospective, randomized, parallel, single‐center trial of 180 patients (78 males and 102 females; 63.3 ± 6.9 years) with non‐lateral compartmental knee OA was performed in the first author‐affiliated hospital. The patients were randomly divided into three groups (each group included 60 patients) and received medial cemented Oxford phase 3 MB UKA, medial cemented Link FB UKA, or cemented DePuy Sigma PFC TKA, respectively. A similar perioperative management and fast‐track surgery program was carried out for all patients. The knee scores at 3‐year follow‐up after operation and clinical efficacies of these three groups of patients were recorded, investigated, and compared. Results Primarily, compared to the TKA group, the UKA groups (MB UKA and FB UKA) had shorter operative time (median 63.2 < 67.1 min), less bleeding (8.6 < 30.0 mL), earlier resumption of walking without crutches (3.0 < 8.0 days) and walking up and down the stairs (5.0 < 10.0 days) (P < 0.001), higher FJS scores (78.0 > 74.5) (P = 0.007), better results in all knee scores (except VAS and KSS function scores) (P < 0.05), and a larger maximum flexion angle of the knee at the 3‐year follow‐up (123.0° > 96.0°) (P = 0.001). Secondarily, compared to the TKA group, the MB UKA group showed better results in the Western Ontario and McMaster Universities index (WOMAC) stiffness (83.6 > 79.6), WOMAC total (86.3 > 83.2), Oxford knee score (OKS) (20.0 < 23.0), Forgotten Joint Score (FJS) (78.5 > 74.5), and a larger maximum flexion angle of the knee (123.0 > 96.0) (P < 0.05). Moreover, the FB UKA group showed higher Hospital for Special Surgery Knee Score (HSS) (91.0 > 88.5), WOMAC stiffness (84.3 > 79.6), WOMAC function (85.2 > 81.7), WOMAC total scores (87.6 > 83.2), and a larger maximum flexion angle of the knee (119.0° > 96.0°) than the TKA group (P < 0.05). Overall, there was no significant difference in all knee scores and maximum flexion angles of the knee for the MB UKA and FB UKA groups (P > 0.05). There was one case with original bearing dislocation in MB UKA group. One patient with displacement of the femoral component caused by a fall injury, and another patient, who lost his life in a car accident, were involved in the FB UKA group. There was an infection case and an intermuscular vein thrombosis case in TKA group. Conclusion UKA showed more advantages than TKA; however, there was no significant difference between the MB UKA and FB UKA groups for treatment of non‐lateral compartmental knee OA.
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Affiliation(s)
- Li-Ping Wu
- Department of Orthopedic Surgery, Jiangmen Central Hospital (Affiliated Jiangmen Hospital of Sun Yat-Sen University), Jiangmen, China
| | - Hermann O Mayr
- Department of Orthopedics and Trauma Surgery, Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
| | - Xing Zhang
- Clinical Experimental Center, Jiangmen Central Hospital (Affiliated Jiangmen Hospital of Sun Yat-Sen University), Jiangmen, China
| | - Yuan-Qiao Huang
- Department of Orthopedic Surgery, Jiangmen Central Hospital (Affiliated Jiangmen Hospital of Sun Yat-Sen University), Jiangmen, China
| | - Yuan-Zhuang Chen
- Department of Orthopedic Surgery, Jiangmen Central Hospital (Affiliated Jiangmen Hospital of Sun Yat-Sen University), Jiangmen, China
| | - Yu-Ming Li
- Department of Orthopedic Surgery, Jiangmen Central Hospital (Affiliated Jiangmen Hospital of Sun Yat-Sen University), Jiangmen, China
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11
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Yu HK, Tang BYH, Wong HL, Sasaki S, Wong TF. Better immediate and early postoperative outcomes of unicompartmental knee replacement comparing with total knee replacement: A matched cohort of patients with medial knee osteoarthritis. JOURNAL OF ORTHOPAEDICS, TRAUMA AND REHABILITATION 2021. [DOI: 10.1177/22104917211056951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction: This study compared the immediate and early postoperative outcomes of medial compartment knee osteoarthritis patients receiving unicompartmental knee replacement (UKR) with a matched cohort of total knee replacement (TKR). Methods: 26 UKR patients were matched with 26 TKR patients based on age, body mass index, pre-operative radiographic severity, range of motion (ROM), Knee Society score (KSS) and Feller patella score. Immediate postoperative outcomes were reflected by postoperative pain, blood loss, length of stay and the number of physiotherapy sessions attended. Early postoperative outcomes (ROM and KSS) were measured at 3 months and 1 year post-operatively. Results: UKR patients had less hemoglobin drop (UKR: 1.2 g/dL, TKR: 1.6 g/dL, p = 0.04), shorter length of stay (UKR: 4.3 days, TKR: 6.0 days, p < 0.001) and required less physiotherapy sessions for recovery (UKR: 6.9 sessions, TKR: 9.3 sessions, p < 0.05). There were no statistically significant differences in early post-operative pain score and postoperative analgesia use ( p > 0.05) between the two groups. Patients receiving UKR had significantly higher post-operative KSS (UKR: 155.9, TKR: 142.4, p = 0.005) and ROM (UKR: 115.8o, TKR: 98.8o, p < 0.001) at 3 months. The KSS and ROM of UKR group at 3 months was better than TKR group at 1-year follow-up. Conclusion: In patients with medial knee osteoarthritis, UKR showed less postoperative analgesic use and blood loss, shorter length of stay, shorter course of rehabilitation and faster recovery with better early KSS and ROM than TKR. Follow up is necessary for comparison in long term outcome and survivorship between the two groups.
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Affiliation(s)
- Hiu-Kiu Yu
- Department of Orthopaedics & Traumatology, Tuen Mun Hospital, Hong Kong
| | - Bruce Yan-Ho Tang
- Department of Orthopaedics & Traumatology, Tuen Mun Hospital, Hong Kong
| | - Hok-Leung Wong
- Department of Orthopaedics & Traumatology, Tuen Mun Hospital, Hong Kong
| | - Sumire Sasaki
- Department of Anaesthesia and Intensive Care, Tuen Mun Hospital, Hong Kong
| | - Tai-Fong Wong
- Department of Orthopaedics & Traumatology, Tuen Mun Hospital, Hong Kong
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12
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Mittal A, Meshram P, Kim TK. What is the evidence for clinical use of advanced technology in unicompartmental knee arthroplasty? Int J Med Robot 2021; 17:e2302. [PMID: 34196097 DOI: 10.1002/rcs.2302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/20/2021] [Accepted: 06/14/2021] [Indexed: 11/08/2022]
Abstract
BACKGROUND With an aim of improving prosthesis survivorship of unicompartmental knee arthroplasty (UKA), use of computer-assisted technologies (CATs) such as robotics, has been on the rise to reduce intraoperative errors in surgical technique. In light of recent influx of CATs in the UKA, a review of these innovations will help providers to understand their clinical utility. METHOD A systematic literature search was performed following Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines. RESULTS Among 19 studies comparing robot-assisted UKA with conventional UKA, only 32% were randomized control trials, 47% reported minimum mean follow-up of 2 years, and 21% evaluated prosthesis survival. Similar results were obtained for navigation-assisted UKA and UKA performed with patient-specific instrumentation. CONCLUSION While CATs seem to reduce the surgical errors in UKA, the evidence on the efficacy of any of the studied CATs to improve survivorship remains limited and there are issues related to cost-effectiveness, learning curve, and increase in operating time.
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Affiliation(s)
- Anurag Mittal
- Department of Orthopedics, Max Super Speciality Hospital, Dehradun, Uttarakhand, India
| | - Prashant Meshram
- Department of Orthopedics, Johns Hopkins University, Baltimore, Maryland, USA
| | - Tae Kyun Kim
- TK Orthopaedic Institution, Seongnam, Bundang, South Korea
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13
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Ito H, Ichihara K, Tamari K, Amano T, Tanaka S, Uchida S. Factors characterizing gait performance of patients before and soon after knee arthroplasty. J Phys Ther Sci 2021; 33:274-282. [PMID: 33814716 PMCID: PMC8012181 DOI: 10.1589/jpts.33.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 12/15/2020] [Indexed: 11/24/2022] Open
Abstract
[Purpose] For monitoring patients with knee osteoarthritis undergoing knee arthroplasty,
the Timed Up and Go and maximum walking speed tests are commonly used. To provide
appropriate peri-surgical rehabilitation, we evaluated the factors associated with
postsurgical changes in Timed Up and Go and maximum walking speed results. [Participants
and Methods] We enrolled 545 knee osteoarthritis patients undergoing either of the
following knee arthroplasties: conventional total knee arthroplasty, minimally invasive
total knee arthroplasty, and unicompartmental knee arthroplasty. Comfortable Timed Up and
Go, maximum Timed Up and Go, and maximum walking speed were measured 2 weeks before and
soon after surgery. Factors (gender, age, and surgical mode) that might influence changes
in test results were evaluated by multiple regression analysis and a two-factor
stratification diagram. [Results] Multiple regression analysis revealed that postsurgical
changes in comfortable/maximum Timed Up and Go and maximum walking speed results were
associated with age and surgical mode after adjustment for preoperative values. Two-factor
diagrams showed that the older the patient, the greater was the slowdown in the Timed Up
and Go test performed postoperatively. The levels of slowdown in the postoperative Timed
Up and Go and maximum walking speed tests were the smallest in those who underwent
conventional total knee arthroplasty, followed by those who underwent minimally invasive
and unicompartmental knee arthroplasty. Among patients whose preoperative Timed Up and Go
and maximum walking speed were slow, slowdown in Timed Up and Go was pronounced with age,
and slowdown in maximum walking speed was higher in conventional total knee arthroplasty.
[Conclusion] The changes in Timed Up and Go and maximum walking speed results 2 weeks
after knee arthroplasty depended on age and surgical modes. These findings are relevant
for the implementation of appropriate peri-surgical rehabilitation.
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Affiliation(s)
- Hideyuki Ito
- Department of Rehabilitation, Faculty of Wakayama Health Care Sciences, Takarazuka University of Medical and Health Care: 2252 Nakanoshima, Wakayama, Wakayama 640-8392, Japan.,Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Japan
| | - Kiyoshi Ichihara
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Japan
| | - Kotaro Tamari
- Department of Physical Therapy, Faculty of Health and Medical Science, Teikyo Heisei University, Japan
| | - Tetsuya Amano
- Department of Physical Therapy, Faculty of Health and Medical Sciences, Tokoha University, Japan
| | - Shigeharu Tanaka
- School of Rehabilitation, Faculty of Health and Social Services, Kanagawa University of Human Services, Japan
| | - Shigehiro Uchida
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Japan
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14
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Cregar WM, Goodloe JB, Lu Y, Gerlinger TL. Increased Operative Time Impacts Rates of Short-Term Complications After Unicompartmental Knee Arthroplasty. J Arthroplasty 2021; 36:488-494. [PMID: 32921548 DOI: 10.1016/j.arth.2020.08.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/13/2020] [Accepted: 08/17/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Previous evidence has demonstrated an exacerbating effect of increased operative time on short-term complications in total joint arthroplasty. While the same relationship may be expected for unicompartmental knee arthroplasty (UKA), supporting evidence remains sparse. The purpose of this study is to determine the impact of operative time on short-term complication rates after UKA and determine a critical threshold in operative times after which complications may increase. METHODS The American College of Surgeons National Surgical Quality Improvement Project was queried from 2007 to 2018 to identify 11,633 UKA procedures that were included in the final analysis. The effect of operative time on complications within 30 days was evaluated using multivariate logistic regression models. Receiver operating characteristics curves and spline regression models were used to identify critical thresholds in operative time that increase the likelihood of short-term complications. RESULTS Longer operative times (in minutes) were associated with higher rates of surgical site infection (90.4 ± 26.7 vs 84.8 ± 25.5, P = .003), blood transfusions (94.9 ± 28.6 vs 84.9 ± 25.5, P = .007), as well as reoperation rates (90.8 ± 27.9 vs 84.9 ± 25.5, P = .01), extended hospital length of stay (93.4 ± 29.8 vs 84.5 ± 25.2, P < .001), and mortality (110.4 ± 35.5 vs 84.9 ± 25.5, P = .008). Following multivariate logistic regression, operative time was found to independently predict increased surgical site infection, blood transfusion, myocardial infarction, extended length of stay, and mortality (odds ratio: 1.09 - 1.45, CI: 1.01 - 1.91, all P values <0.02). Receiver operating characteristics curves found an increase in mortality risk during the 30-day postoperative period after 88.5 minutes of operative time, a finding supported by spline regression plots. CONCLUSION The present study found a positive correlation between increased operative times and short-term postoperative complication rates after UKA. Despite a statistically significant association with increasing operative time, odds ratios of reported complications are relatively low.
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Affiliation(s)
- William M Cregar
- Division of Orthopaedics, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - J Brett Goodloe
- Department of Orthopaedic Surgery and Physical Rehabilitation, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Yining Lu
- Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Tad L Gerlinger
- Division of Orthopaedics, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
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15
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Kim TK, Mittal A, Meshram P, Kim WH, Choi SM. Evidence-based surgical technique for medial unicompartmental knee arthroplasty. Knee Surg Relat Res 2021; 33:2. [PMID: 33413698 PMCID: PMC7792201 DOI: 10.1186/s43019-020-00084-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 11/26/2020] [Indexed: 01/04/2023] Open
Abstract
Unicompartmental knee arthroplasty (UKA) is a successful treatment modality in selected patients having advanced, single-compartment osteoarthritis of the knee. The bone and ligament preservation leading to shorter recovery periods, better functional outcomes, lower perioperative complication rates, and easier revision, if needed, are proposed as some of the advantages of UKA over total knee arthroplasty (TKA). Despite several advantages, UKA is reported to have higher failure rates as compared to TKA. The prosthesis failure of UKA is directly correlated to intraoperative technique-related factors like malpositioning of components and the inability to replicate the target-limb alignment as per preoperative planning. An evidence-based surgical technique for UKA may help surgeons to avoid the intraoperative technique-related errors. The purpose of this paper is to describe a stepwise surgical technique for the fixed-bearing medial UKA.
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Affiliation(s)
- Tae Kyun Kim
- TK Orthopedic Institution, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea.
| | - Anurag Mittal
- TK Orthopedic Institution, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea
| | - Prashant Meshram
- Department of Orthopaedics, Johns Hopkins Medical Institute, 2360 West Joppa Road, Suite 306, Baltimore, MD, 21093, USA
| | - Woo Hyun Kim
- TK Orthopedic Institution, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea
| | - Sang Min Choi
- TK Orthopedic Institution, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea
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16
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van Buul GM, Headon R, O'Toole G, Neligan M, O'Donnell T. Does resurfacing of asymptomatic full-thickness localized articular defects of the trochlea influence the outcome following unicompartmental knee arthroplasty of the medial compartment?: A retrospective cohort study with minimum seven-year follow-up. Knee 2020; 27:1492-1500. [PMID: 33010766 DOI: 10.1016/j.knee.2020.07.088] [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: 04/20/2020] [Revised: 07/14/2020] [Accepted: 07/21/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Patellofemoral joint (PFJ) degeneration has been found not to affect outcome following medial unicompartmental knee arthroplasty (UKA). However, PFJ disease occasionally presents as isolated trochlear cartilage lesions, with little available evidence regarding treatment options or necessity. We evaluated the effectiveness of concomitant trochlear resurfacing in patients undergoing medial UKA with asymptomatic trochlear lesions. METHODS We included 60 patients undergoing medial UKA with an associated full thickness lesion of the trochlea. A fixed bearing UKA implant (PKR™, Stryker, Warsaw, IND) was used in all cases. In 30 patients, trochlear lesions were resurfaced with a HemiCAP® PF Classic (HemiCAP® PFC) implant (Arthrosurface, Franklin, MA). Outcome measures included VAS-, KOOS-, WOMAC-, SF-36 scores and radiological assessment. RESULTS Average length of follow-up was 97.4 months (range: 88-106 months). Both groups showed significant improvement for all clinical scores post-operatively compared to pre-operatively (p < 0.001 for all). The UKA group showed a better VAS score at all follow-up moments (p < 0.01 for all), but no differences were found between both groups at all time points for other outcome measures. None of the HemiCAP® PFC implants needed to be revised within the timeframe of the study. CONCLUSIONS In this retrospective cohort study, we found a 100% survivorship of the HemiCAP® PFC implant at an average eight-year follow-up. However, no clinical benefits were found in performing trochlear resurfacing in conjunction with medial UKA for asymptomatic end-stage trochlear cartilage lesions. Therefore, these lesions can be safely ignored when performing a medial UKA.
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Affiliation(s)
- Gerben M van Buul
- Beacon Hospital, Beacon Court, Bracken Road, Sandyford Industrial Estate, Dublin 18, Dublin, Ireland.
| | - Rebecca Headon
- Beacon Hospital, Beacon Court, Bracken Road, Sandyford Industrial Estate, Dublin 18, Dublin, Ireland
| | - Gary O'Toole
- Beacon Hospital, Beacon Court, Bracken Road, Sandyford Industrial Estate, Dublin 18, Dublin, Ireland
| | - Maurice Neligan
- Beacon Hospital, Beacon Court, Bracken Road, Sandyford Industrial Estate, Dublin 18, Dublin, Ireland
| | - Turlough O'Donnell
- Beacon Hospital, Beacon Court, Bracken Road, Sandyford Industrial Estate, Dublin 18, Dublin, Ireland
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17
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Nishizawa K, Harato K, Morishige Y, Kobayashi S, Niki Y, Nagura T. A comparison of gait characteristics between posterior stabilized total knee and fixed bearing unicompartmental knee arthroplasties. ASIA-PACIFIC JOURNAL OF SPORT MEDICINE ARTHROSCOPY REHABILITATION AND TECHNOLOGY 2020; 22:62-66. [PMID: 32983900 PMCID: PMC7479273 DOI: 10.1016/j.asmart.2020.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/04/2020] [Accepted: 07/27/2020] [Indexed: 11/02/2022]
Abstract
Background/Objective According to previous studies, physiological gait pattern was found in unicompartmental knee arthroplasty (UKA) as compared to total knee arthroplasty (TKA) concerning the gait parameters including gait speed, cadence, and step length. However, little attention had been paid to the detailed kinematic and kinetic differences during gait between TKAs and UKAs. The aim of the present study was to investigate and to clarify the biomechanical differences between posterior stabilized TKAs and fixed bearing UKAs during walking. Methods A total of 28 patients participated in the present study. Fifteen patients who underwent TKA and thirteen patients who underwent UKA were enrolled. Gait analysis was done at an average of 12.9 months after surgery. The subjects performed level walking at a preferred speed. For each subject, three-dimensional kinematic, kinetic and ground reaction force data were recorded as well as clinical data including range of motion at the knee joint and plain radiographs. Differences of knee kinematics or kinetics were compared between TKAs and UKAs using two-tailed Mann Whitney U-test. Results On physical examination, passive range motion was significantly smaller in TKAs than in UKAs, while femorotibial angle on plain radiographs was not significantly different on plain radiographs. In terms of kinematics, TKAs were more flexed at heel contact and less extended in mid-stance phase compared to UKAs in the sagittal plane, and total excursion of TKAs were also smaller than UKAs. Regarding knee kinetics, TKA patients had significantly less peak tibial internal rotation moment in terminal stance phase. In addition, peak knee adduction moment was significantly larger in UKAs than in TKAs, while peak knee flexion moment was not significantly different. Conclusion Posterior stabilized TKAs exhibited less peak tibial internal rotation moment, which is known as pivot shift avoidance gait, in the present study, compared to fixed bearing UKAs. TKAs had similar gait pattern to anterior cruciate ligament deficient knees, compared to UKAs even if patients with TKAs had no subjective pain during walking.
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Affiliation(s)
- Kohei Nishizawa
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kengo Harato
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan.,Institute for Integrated Sports Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yutaro Morishige
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Shu Kobayashi
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yasuo Niki
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Takeo Nagura
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
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18
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Mittal A, Meshram P, Kim WH, Kim TK. Unicompartmental knee arthroplasty, an enigma, and the ten enigmas of medial UKA. J Orthop Traumatol 2020; 21:15. [PMID: 32876817 PMCID: PMC7468046 DOI: 10.1186/s10195-020-00551-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 07/22/2020] [Indexed: 12/17/2022] Open
Abstract
Unicompartmental knee arthroplasty (UKA) is a bone- and ligament-sparing alternative to total knee arthroplasty in the patients with end-stage single-compartment degeneration of the knee. Despite being a successful procedure, the multiple advantages of UKA do not correlate with its usage, most likely due to the concerns regarding prosthesis survivability, patient selection, ideal bearing design, and judicious use of advanced technology among many others. Therefore, the purpose of this study is to review and summarize the debated literature and discuss the controversies as “Ten Enigmas of UKA.”
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Affiliation(s)
- Anurag Mittal
- TK Orthopedic Surgery, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea
| | - Prashant Meshram
- Department of Orthopaedics, Johns Hopkins Medical Institute, 2360 West Joppa Road, Suite 306, Baltimore, MD, 21093, USA
| | - Woo Hyun Kim
- TK Orthopedic Surgery, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea
| | - Tae Kyun Kim
- TK Orthopedic Surgery, 55 Dongpangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13535, Republic of Korea.
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19
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Lu Y, Cregar WM, Goodloe JB, Khazi Z, Forsythe B, Gerlinger TL. General Anesthesia Leads to Increased Adverse Events Compared With Spinal Anesthesia in Patients Undergoing Unicompartmental Knee Arthroplasty. J Arthroplasty 2020; 35:2002-2008. [PMID: 32247674 DOI: 10.1016/j.arth.2020.03.012] [Citation(s) in RCA: 8] [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: 01/24/2020] [Revised: 02/21/2020] [Accepted: 03/05/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The volume of unicompartmental knee arthroplasty (UKA) has increased dramatically in recent years with good reported long-term outcomes. UKA can be performed under general or neuraxial (ie, spinal) anesthesia; however, little is known as to whether there is a difference in outcomes based on anesthesia type. The purpose of the present study is to compare perioperative outcomes between anesthesia types for patients undergoing primary elective UKA. METHODS Patients who underwent primary elective UKA from 2007 to 2017 were identified from the American College of Surgeons-National Surgical Quality Improvement Program Database. Operating room times, length of stay (LOS), 30-day adverse events, and readmission rates were compared between patients who received general anesthesia and those who received spinal anesthesia. Propensity-adjusted multivariate analysis was used to control for selection bias and baseline patient characteristics. RESULTS A total of 8639 patients underwent UKA and met the inclusion criteria for this study. Of these, 4728 patients (54.7%) received general anesthesia and 3911 patients (45.3%) received spinal anesthesia. On propensity-adjusted multivariate analyses, general anesthesia was associated with increased operative time (P < .001) and the occurrence of any severe adverse event (odds ratio [OR], 1.39; 95% confidence interval [95% CI], 1.04-1.84; P = .024). In addition, general anesthesia was associated with higher rates of deep venous thrombosis (OR, 2.26; 95% CI, 1.11-4.6; P = .024) and superficial surgical site infection (OR, 1.04; 95% CI, 0.6-1.81; P < .001). Finally, general anesthesia was also associated with a reduced likelihood of discharge to home (OR, 0.72; 95% CI, 0.59-0.88; P < .001). No difference existed in postoperative hospital LOS or readmission rates among cohorts. CONCLUSION General anesthesia was associated with an increased rate of adverse events and increased operating room times as well as a reduced likelihood of discharge to home. There was no difference in hospital LOS or postoperative readmission rates between anesthesia types.
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Affiliation(s)
- Yining Lu
- Division of Orthopaedics, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL
| | - William M Cregar
- Division of Orthopaedics, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL
| | - J Brett Goodloe
- Department of Orthopaedic Surgery and Physical Rehabilitation, Medical University of South Carolina, Charleston, SC
| | - Zain Khazi
- Department of Orthopaedic Surgery and Rehabilitation, Iowa University Hospitals and Clinics, Iowa City, IA
| | - Brian Forsythe
- Division of Orthopaedics, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL
| | - Tad L Gerlinger
- Division of Orthopaedics, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL
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20
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Romagnoli S, Vitale JA, Marullo M. Outcomes of lateral unicompartmental knee arthroplasty in post-traumatic osteoarthritis, a retrospective comparative study. INTERNATIONAL ORTHOPAEDICS 2020; 44:2321-2328. [PMID: 32561964 DOI: 10.1007/s00264-020-04665-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/11/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE We asked whether the clinical and radiographic outcomes and survivorship after unicompartmental knee arthroplasty (UKA) for osteoarthritis (OA) consequent to lateral tibial plateau fracture were comparable with those obtained after lateral UKA for primary OA. METHODS A total of 13 patients receiving lateral UKA for OA secondary to tibial plateau fracture (post-traumatic UKA, P-UKA) were compared with 13 patients who underwent lateral UKA for primary OA (OA-UKA). Patients were matched for age at surgery, gender, body mass index, and follow-up length. Pre- and post-operative clinical and radiographic assessments included clinical (KSS-c) and functional (KSS-f) Knee Society Score, Hip-Knee-Ankle (HKA) angle, and signs of osteolysis. RESULTS Mean follow-up was similar in both groups: 9.9 ± 4.6 years for P-UKA and 9.3 ± 2.4 years for OA-UKA. The two way ANOVA procedure followed by the Bonferroni multiple comparisons test highlighted a baseline difference in KSS-c with P-UKA having greater scores than OA-UKA (+ 12; p < 0.05) and both groups showed large improvements in KSS-c (p < 0.001), KSS-f (p < 0.001), and HKA angle (p < 0.001) at follow-up. The nine year prosthesis survival rate, tested by the Kaplan-Meier methods, was 92% in both groups. CONCLUSION Lateral UKA for OA secondary to tibial plateau fracture was efficient in restoring joint function, improving clinical results, and correcting lower limb alignment. Clinical outcomes and nine year survivorship did not differ from lateral UKA for primary OA. Consequently, lateral UKA should be considered a valid option in treating lateral posttraumatic OA in carefully selected patients. TRIAL REGISTRATION NUMBER ( clinicaltrials.gov ) NCT04198389.
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Affiliation(s)
- Sergio Romagnoli
- Joint Replacement Department, IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, 20161, Milan, Italy
| | - Jacopo Antonino Vitale
- LaMSS - Laboratory of Movement and Sport Science, IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy.
| | - Matteo Marullo
- Joint Replacement Department, IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, 20161, Milan, Italy
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Wilson HA, Middleton R, Abram SGF, Smith S, Alvand A, Jackson WF, Bottomley N, Hopewell S, Price AJ. Patient relevant outcomes of unicompartmental versus total knee replacement: systematic review and meta-analysis. BMJ 2019; 364:l352. [PMID: 30792179 PMCID: PMC6383371 DOI: 10.1136/bmj.l352] [Citation(s) in RCA: 175] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To present a clear and comprehensive summary of the published data on unicompartmental knee replacement (UKA) or total knee replacement (TKA), comparing domains of outcome that have been shown to be important to patients and clinicians to allow informed decision making. DESIGN Systematic review using data from randomised controlled trials, nationwide databases or joint registries, and large cohort studies. DATA SOURCES Medline, Embase, Cochrane Controlled Register of Trials (CENTRAL), and Clinical Trials.gov, searched between 1 January 1997 and 31 December 2018. ELIGIBILITY CRITERIA FOR SELECTING STUDIES Studies published in the past 20 years, comparing outcomes of primary UKA with TKA in adult patients. Studies were excluded if they involved fewer than 50 participants, or if translation into English was not available. RESULTS 60 eligible studies were separated into three methodological groups: seven publications from six randomised controlled trials, 17 national joint registries and national database studies, and 36 cohort studies. Results for each domain of outcome varied depending on the level of data, and findings were not always significant. Analysis of the three groups of studies showed significantly shorter hospital stays after UKA than after TKA (-1.20 days (95% confidence interval -1.67 to -0.73), -1.43 (-1.53 to -1.33), and -1.73 (-2.30 to -1.16), respectively). There was no significant difference in pain, based on patient reported outcome measures (PROMs), but significantly better functional PROM scores for UKA than for TKA in both non-trial groups (mean difference -0.58 (-0.88 to -0.27) and -0.32 (-0.48 to -0.15), respectively). Regarding major complications, trials and cohort studies had non-significant results, but mortality after TKA was significantly higher in registry and large database studies (risk ratio 0.27 (0.16 to 0.45)), as were venous thromboembolic events (0.39 (0.27 to 0.57)) and major cardiac events (0.22 (0.06 to 0.86)). Early reoperation for any reason was higher after TKA than after UKA, but revision rates at five years remained higher for UKA in all three study groups (risk ratio 5.95 (1.29 to 27.59), 2.50 (1.77 to 3.54), and 3.13 (1.89 to 5.17), respectively). CONCLUSIONS TKA and UKA are both viable options for the treatment of isolated unicompartmental osteoarthritis. By directly comparing the two treatments, this study demonstrates better results for UKA in several outcome domains. However, the risk of revision surgery was lower for TKA. This information should be available to patients as part of the shared decision making process in choosing treatment options. SYSTEMATIC REVIEW REGISTRATION PROSPERO number CRD42018089972.
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Affiliation(s)
- Hannah A Wilson
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, BOTNAR Research Centre, Headington, Oxford OX3 7LD, UK
| | - Rob Middleton
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, BOTNAR Research Centre, Headington, Oxford OX3 7LD, UK
| | - Simon G F Abram
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, BOTNAR Research Centre, Headington, Oxford OX3 7LD, UK
| | - Stephanie Smith
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, BOTNAR Research Centre, Headington, Oxford OX3 7LD, UK
| | - Abtin Alvand
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, BOTNAR Research Centre, Headington, Oxford OX3 7LD, UK
| | - William F Jackson
- Oxford University Hospitals NHS Trust, Nuffield Orthopaedic Centre, Oxford, UK
| | - Nicholas Bottomley
- Oxford University Hospitals NHS Trust, Nuffield Orthopaedic Centre, Oxford, UK
| | - Sally Hopewell
- Centre for Statistics in Medicine, Oxford Clinical Trials Research Unit, Oxford, UK
| | - Andrew J Price
- University of Oxford, Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, BOTNAR Research Centre, Headington, Oxford OX3 7LD, UK
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