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Alamino LP, Garabano G, Pesciallo CÁ, Del Sel H. Bilateral simultaneous total knee arthroplasty with and without patellar resurfacing. A prospective single surgeon series with a minimum follow-up of 7 years. Knee Surg Relat Res 2024; 36:21. [PMID: 38812052 PMCID: PMC11138002 DOI: 10.1186/s43019-024-00225-6] [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: 01/03/2024] [Accepted: 05/19/2024] [Indexed: 05/31/2024] Open
Abstract
BACKGROUND Total knee arthroplasty (TKA) is the most effective treatment for end-stage adult knee osteoarthritis, but it has been reported that patient satisfaction may vary. A malfunction of the patellofemoral joint may produce anterior knee pain (AKP) for several reasons. While some surgeons systematically resurface the patella despite the risk of potential complications such as fracture, loosening, or wear of the patella, others prefer to preserve it to reduce AKP and revision rates. This study aimed to evaluate whether patellar resurfacing had better clinical and functional outcomes, complications, and revision rates in patients undergoing simultaneous bilateral total knee arthroplasty. METHODS We conducted a prospective cohort study, including patients who underwent bilateral simultaneous TKA in which the patella was replaced in one knee and preserved in the other, with a minimum follow-up of 7 years. We assessed clinical and functional outcomes with the Knee Society Score (KSS) and Visual Analogue Scale (VAS); complications and revision rates were also registered. RESULTS The final series consisted of 43 patients with 86 knee arthroplasties. After a mean of 7.6 years of follow-up, no significant differences were found regarding KSS (clinical: 82.8 ± 7.4 versus 83.2 ± 3.4, p = 0.92; functional 89.1 ± 8.2: versus 90.4 ± 6.8; p = 0.99), VAS (2.0 ± 0.9 versus 1.8 ± 1.0; p = 0.84), complications (10.5% versus 8.1%; p = 0.57), or revision rates (2.3% versus 2.3%; p = 0.99) when comparing patellar resurfacing versus retention. CONCLUSION In the context of total knee arthroplasty, patellar replacement did not demonstrate statistically significant differences concerning patellar retention in clinical nor functional outcomes, AKP, complications, or revision rates after a minimum of 7 years of follow-up.
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Affiliation(s)
- Leonel Perez Alamino
- Department of Orthopaedics and Traumatology, British Hospital of Buenos Aires, Perdriel 74, C1280 AEB, Buenos Aires, Argentina.
| | - German Garabano
- Department of Orthopaedics and Traumatology, British Hospital of Buenos Aires, Perdriel 74, C1280 AEB, Buenos Aires, Argentina
| | - Cesar Ángel Pesciallo
- Department of Orthopaedics and Traumatology, British Hospital of Buenos Aires, Perdriel 74, C1280 AEB, Buenos Aires, Argentina
| | - Hernán Del Sel
- Department of Orthopaedics and Traumatology, British Hospital of Buenos Aires, Perdriel 74, C1280 AEB, Buenos Aires, Argentina
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Picart B, Scaltsas A, Pujol N. Patellar resurfacing might not be mandatory in contralateral second total knee replacement even if performed during replacement of the first knee. Orthop Traumatol Surg Res 2024:103857. [PMID: 38447776 DOI: 10.1016/j.otsr.2024.103857] [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: 01/14/2023] [Revised: 10/23/2023] [Accepted: 02/06/2024] [Indexed: 03/08/2024]
Abstract
INTRODUCTION The appropriateness or necessity of patellar resurfacing in total knee arthroplasty (TKA) is not clearly established. The objective of the present study was to compare the clinical and functional results of patients with bilateral involvement, operated on in one knee by TKA with patellar resurfacing and in the other knee by TKA without resurfacing. The hypothesis was that there was no difference in results between the two sides. METHOD This was a retrospective cohort of patients operated on by TKA without patellar resurfacing in a second osteoarthritic knee after contralateral TKA with patellar resurfacing. Twenty consecutive patients who underwent second primary TKA constituted their own control group (40 knees). Iwano scores were comparable. Mean age was 75.9±6.2years. Mean time between the two procedures was 20.6±11.9months. RESULTS There were no differences in SF-36, KOOS or Lille patellofemoral scores between the right and left knees. Sixty-five percent of patients were unable to differentiate the performance of their knees in activities of daily living. CONCLUSION The present study did not differentiate results according to patellar resurfacing, showing the limitations of resurfacing for early functional gain after primary TKA. Resurfacing might thus not be essential, even if it was performed in replacement of the first knee. LEVEL OF EVIDENCE IV; retrospective cohort study.
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Affiliation(s)
- Baptiste Picart
- Service de Chirurgie Orthopédique, Centre Hospitalier de Versailles, 177, rue de Versailles, 78150 Le Chesnay, France
| | - Angelos Scaltsas
- Service de Chirurgie Orthopédique, Centre Hospitalier de Versailles, 177, rue de Versailles, 78150 Le Chesnay, France
| | - Nicolas Pujol
- Service de Chirurgie Orthopédique, Centre Hospitalier de Versailles, 177, rue de Versailles, 78150 Le Chesnay, France.
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Yang B, Yuan FZ, Wang HJ, Gong X, Chang YH, Yu JK. Femoral anterior condyle height decreases as the distal anteroposterior size increases in total knee arthroplasty: A comparative study. PLoS One 2024; 19:e0297634. [PMID: 38408088 PMCID: PMC10896507 DOI: 10.1371/journal.pone.0297634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 01/08/2024] [Indexed: 02/28/2024] Open
Abstract
PURPOSE The anterior flange height of the current femoral component increases with an increasing distal femoral anteroposterior dimension. During total knee arthroplasty (TKA), we have observed that a large femur may have a thinner anterior condyle, whereas a small femur may have a thicker anterior condyle. The first purpose of this study was to examine whether the femoral anterior condyle height decreases as the distal femoral anteroposterior size increases and whether gender differences exist in anterior condyle height. METHODS A total of 1218 knees undergoing TKA intraoperative and computed tomography scans from 303 healthy knees were used to measure the anterior lateral condylar height (ALCH), anterior medial condylar height (AMCH), and the lateral anteroposterior (LAP) and medial anteroposterior (MAP) dimensions of distal femurs. The LAP and MAP measurements were used for adjustments to determine whether gender differences exist in anterior condyle heights. Linear regression analysis was performed to determine correlations between ALCH and LAP or between AMCH and MAP. RESULTS There were significant differences between males and females in ALCH in both the CT and TKA groups and AMCH in the CT group (all P<0.01). After adjusting for LAP and MAP, there were significant gender differences in the lateral and medial condylar heights in both groups (P<0.01). There were significant negative correlations between ALCH and LAP values and between AMCH and MAP values in both CT and TKA measurements, with the LAP and MAP values increasing as ALCH and AMCH decreased. CONCLUSIONS The results demonstrate that femoral anterior condylar height decreased with increasing anteroposterior dimension in both the medial and lateral condyle. In addition, this study also showed that anterior condylar heights are highly variable, with gender differences. The data may provide an important reference for designing femoral anterior flange thickness to precisely match the natural anterior condylar anatomy.
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Affiliation(s)
- Bo Yang
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
- Department of Orthopaedics, Shaanxi Provincial People's Hospital, The Third Affiliated hospital of Xi'an jiaotong University, Xi'an, China
| | - Fu-Zhen Yuan
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
| | - Hai-Jun Wang
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
| | - Xi Gong
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
| | - Yan-Hai Chang
- Department of Orthopaedics, Shaanxi Provincial People's Hospital, The Third Affiliated hospital of Xi'an jiaotong University, Xi'an, China
| | - Jia-Kuo Yu
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
- Orthopaedic Sports Medicine Center, Beijing Tsinghua Changgung Hospital, Affiliated Hospital of Tsinghua University, Changping District, Beijing, China
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Liu L, Guan QZ, Wang LF. Rehabilitation care for pain in elderly knee replacement patients. World J Clin Cases 2024; 12:721-728. [PMID: 38322695 PMCID: PMC10841138 DOI: 10.12998/wjcc.v12.i4.721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/04/2023] [Accepted: 01/08/2024] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND Total knee arthroplasty (TKA) is recognized as the most effective surgical intervention for relieving pain and improving joint mobility and deformity in patients with knee osteoarthritis and other synovial diseases. The application of accelerated postoperative rehabilitation (enhanced recovery after surgery) has demonstrated its efficacy in improving patient outcomes, and early postoperative joint function exercise has become a key prognostic factor in knee replacement. The unexpected appearance of limb pain and swelling hindered the patient's tendency for early mobilization, leading in prolonged hospitalization, delayed functional recovery and negative psychological responses. AIM To investigate the impact of incorporating programmed pain nursing with collaborative nursing on elderly patients undergoing knee replacement surgery. METHODS A retrospective analysis was conducted on a cohort of 116 patients who underwent TKA at our hospital between July 2019 and July 2021. The patients were divided into two groups: A control group (n = 58) receiving programmatic nursing, and an observed group (n = 58) receiving programmed nursing combined with a collaborative nursing model. A pain management team consisting of attending physicians, head nurses, and responsible nurses was established. Outcome measures included visual analogue scale (VAS) scores, activities of daily living (ADL) scale scores, and functional scores. RESULTS The ADL scores of patients in both groups exhibited a continuous increase. However, there was no statistically significant difference in the ADL scores between the two groups at 48 h and the 7th d post-surgery (P > 0.05). Upon reexamination at the 3rd mo, the observation group demonstrated higher ADL scores compared to the control group (67.48 ± 14.69 vs 59.40 ± 16.06, P < 0.05). The VAS scores of both groups significantly decreased, with no significant difference observed between the groups at each time point (P > 0.05). The functional status of patients in both groups exhibited a gradual increase prior to intervention and at the 1st, 2nd, and 3rd month following discharge (P < 0.05). There was no statistically significant difference in knee joint function scores between the two groups at the 1st month after discharge (47.52 vs 45.81, P > 0.05). However, the knee joint function scores of patients in the observation group were significantly higher than those in the control group at the 2nd (59.38 vs 53.19, P < 0.05) and 3rd month (71.92 vs 64.34, P < 0.05) following discharge. CONCLUSION The utilization of programmed pain nursing in conjunction with collaborative nursing for out-of-hospital care of TKA patients has demonstrated favorable outcomes, encompassing pain reduction, enhanced prognosis, and improved nursing quality for patients.
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Affiliation(s)
- Li Liu
- Wuhan Fourth Hospital, Wuhan 430033, Hubei Province, China
| | - Qiao-Zhen Guan
- Department of Orthopaedics, Wuhan Third Hospital, Wuhan 430074, Hubei Province, China
| | - Li-Fang Wang
- Wuhan Fourth Hospital, Wuhan 430033, Hubei Province, China
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Gerow DE, Small SR, Lackey WG, Carter JL, Berend ME. Incidence of Anterior Knee Pain and Functional Difficulty in a Prospectively Recruited Cohort Following Total Knee Arthroplasty With Selective Patellar Resurfacing. J Arthroplasty 2024; 39:81-86. [PMID: 37331446 DOI: 10.1016/j.arth.2023.06.029] [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: 04/17/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/20/2023] Open
Abstract
BACKGROUND The influence of patellar resurfacing on anterior knee pain, stair climbing, and functional activity outcomes following total knee arthroplasty (TKA) are incompletely understood. This study examined the influence of patellar resurfacing on patient-reported outcome measures (PROMs) relating to anterior knee pain and function. METHODS The Knee Injury and Osteoarthritis Outcome Score of Joint Replacement (KOOS, JR.) patient PROMs were collected preoperatively and at 12 months follow-up for 950 TKAs performed over 5 years. Indications for patellar resurfacing included Grade IV patello-femoral (PFJ) changes or mechanical PFJ findings during patellar trialing. Patellar resurfacing was performed on 393 (41%) of the 950 TKAs performed. Multivariable binomial logistic regressions were performed, using KOOS, JR. questions assessing pain during stair climbing, standing upright, and function during rising from sitting as surrogates for anterior knee pain. Independent regression models were performed for each of the targeted KOOS, JR. questions, with adjustment for age at surgery, sex, and baseline pain and function. RESULTS No association was observed between 12-month postoperative anterior knee pain or function with patellar resurfacing (P = .17, .97). Patients who had moderate or greater preoperative pain on stairs had an increased likelihood of postoperative pain and functional difficulty (odds ratio 2.3, P = .013), while males were 42% less likely to report postoperative anterior knee pain (odds ratio 0.58, P = .002). CONCLUSION Selective patellar resurfacing based on PFJ degeneration and mechanical PFJ symptoms produces similar improvement in PROMs for resurfaced and unresurfaced knees.
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Affiliation(s)
- Daniel E Gerow
- Department of Orthopaedic Surgery, University of Michigan Health West, Wyoming, Michigan
| | - Scott R Small
- Nuffield Department of Population Health, University of Oxford, Oxford, UK
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Shatrov J, Coolican MR. Isolated patellofemoral arthroplasty-surgical technique and tips: current concepts. J ISAKOS 2023:S2059-7754(23)00599-0. [PMID: 38029968 DOI: 10.1016/j.jisako.2023.11.009] [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: 08/31/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 12/01/2023]
Abstract
Successful patellofemoral arthroplasty (PFA) requires appropriate patient selection, correct implant positioning and attention to surgical technique. Whilst the original concept and rationale offered an attractive surgical option for patients with isolated patellofemoral arthritis, early results were disappointing and consequently many surgeons became reluctant to offer it. With newer-generation designs, outcomes have been more promising. However, attention to surgical technique remains an integral component to a successful outcome, with results being unforgiving when surgical errors are made. This paper explores the key components of the surgical technique in PFA, including implant design, patient selection and tips to avoid common mistakes.
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Affiliation(s)
- Jobe Shatrov
- Sydney Orthopaedic Research Institute (SORI) at Landmark Orthopaedics, St. Leonards, Sydney, 2065, Australia.
| | - Myles Rj Coolican
- Sydney Orthopaedic Research Institute (SORI) at Landmark Orthopaedics, St. Leonards, Sydney, 2065, Australia.
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Kim SE, Jung H, Ro DH, Lee MC, Han HS. Anatomic Patellar Design Has No Clinical Superiority Over Dome Patellar Design in Total Knee Arthroplasty: A Randomized Clinical Trial. J Arthroplasty 2023; 38:1742-1747. [PMID: 36966886 DOI: 10.1016/j.arth.2023.03.056] [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: 12/05/2022] [Revised: 03/15/2023] [Accepted: 03/19/2023] [Indexed: 04/14/2023] Open
Abstract
BACKGROUND Various patellar designs are used in total knee arthroplasty (TKA) for optimal management of patellofemoral pain. The aim of this study was to compare postoperative 2-year clinical outcomes of 3 patellar designs: medialized anatomic (MA), medialized dome (MD), and Gaussian dome (GD). METHODS In this randomized controlled trial, 153 patients undergoing primary TKA from 2015 to 2019 were enrolled. Patients were allocated to 3 groups (MA, MD, and GD). Demographic characteristics, clinical variables including knee flexion angle and patient-reported outcome measures (Kujala score, Knee Society Scores, the Hospital for Special Surgery score, and The Western Ontario and McMaster Universities Arthritis Index), and complications were collected. Radiologic parameters including Blackburne-Peel ratio and patellar tilt angle (PTA) were measured. A total of 139 patients who completed postoperative follow-up for 2 years were analyzed. RESULTS Knee flexion angle and patient-reported outcome measures did not statistically differ among the 3 groups (MA, MD, and GD). There were no extensor mechanism-related complications at any group. Group MA showed significantly higher mean values of postoperative PTA than group GD (0.1 ± 3.2 versus -1.8 ± 3.4, P = .011). Group GD (20.8%) had a tendency to have more outliers (over 5 degrees) in PTA than groups MA (10.6%) and MD (4.5%), although the differences were not statistically significant (P = .092). CONCLUSION Anatomic patellar design was not clinically superior over dome design in TKA, showing comparable results in terms of clinical scores, complications, and radiographic indices.
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Affiliation(s)
- Sung Eun Kim
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea; Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Haeyoung Jung
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea; Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Du Hyun Ro
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea; Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Myung Chul Lee
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea; Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Hyuk-Soo Han
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea; Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, South Korea
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Gupton M, Johnson JE, Cummings GR, Deivaraju C. Overstuffing the patellofemoral compartment in total knee arthroplasty: a systematic review. EFORT Open Rev 2023; 8:597-605. [PMID: 37526281 PMCID: PMC10441255 DOI: 10.1530/eor-22-0107] [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: 08/02/2023] Open
Abstract
Purpose To systematically review and analyze the data available in the literature to evaluate the role of patellofemoral overstuffing in affecting clinical outcomes following primary total knee arthroplasty. Methods A systematic literature review was conducted following the PRISMA guidelines. Only studies including primary total knee arthroplasty in the setting of osteoarthritis with a quantifiable method of measuring patellofemoral overstuffing using pre- and post-operative x-rays or advanced imaging, as well as reported subjective and/or objective patient outcomes in relation to patellofemoral overstuffing were included. Extracted data included patellofemoral overstuffing quantitative measurement method, outcome measurements, follow-up, patient demographics, author, and publication details. Descriptive analysis was provided for the available literature. Results There were six included articles with a total of 2325 TKAs assessed. All papers found no significant effect on clinical outcomes when the amount of PFJ overstuffing was within reason. Conclusion The amount of overstuffing that routinely takes place seems to be within tolerable limits and does not create a significant difference in clinical outcomes. Nevertheless, it is recommended to recreate the anatomic dimensions of the PFJ in order to best obtain a joint that is within this safe margin of error.
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Affiliation(s)
- Marco Gupton
- MountainView Regional Medical Center, Orthopaedic Surgery Residency, Las Cruces, New Mexico, USA
| | - Jordan E Johnson
- MountainView Regional Medical Center, Orthopaedic Surgery Residency, Las Cruces, New Mexico, USA
| | - G Robert Cummings
- MountainView Regional Medical Center, Orthopaedic Surgery Residency, Las Cruces, New Mexico, USA
| | - Chenthuran Deivaraju
- Department of Orthopaedic Surgery, University of Minnesota, St Cloud, Minnesota, USA
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Liu Z, Zhou A, Fauveau V, Lee J, Marcadis P, Fayad ZA, Chan JJ, Gladstone J, Mei X, Huang M. Deep Learning for Automated Measurement of Patellofemoral Anatomic Landmarks. Bioengineering (Basel) 2023; 10:815. [PMID: 37508842 PMCID: PMC10376187 DOI: 10.3390/bioengineering10070815] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Patellofemoral anatomy has not been well characterized. Applying deep learning to automatically measure knee anatomy can provide a better understanding of anatomy, which can be a key factor in improving outcomes. METHODS 483 total patients with knee CT imaging (April 2017-May 2022) from 6 centers were selected from a cohort scheduled for knee arthroplasty and a cohort with healthy knee anatomy. A total of 7 patellofemoral landmarks were annotated on 14,652 images and approved by a senior musculoskeletal radiologist. A two-stage deep learning model was trained to predict landmark coordinates using a modified ResNet50 architecture initialized with self-supervised learning pretrained weights on RadImageNet. Landmark predictions were evaluated with mean absolute error, and derived patellofemoral measurements were analyzed with Bland-Altman plots. Statistical significance of measurements was assessed by paired t-tests. RESULTS Mean absolute error between predicted and ground truth landmark coordinates was 0.20/0.26 cm in the healthy/arthroplasty cohort. Four knee parameters were calculated, including transepicondylar axis length, transepicondylar-posterior femur axis angle, trochlear medial asymmetry, and sulcus angle. There were no statistically significant parameter differences (p > 0.05) between predicted and ground truth measurements in both cohorts, except for the healthy cohort sulcus angle. CONCLUSION Our model accurately identifies key trochlear landmarks with ~0.20-0.26 cm accuracy and produces human-comparable measurements on both healthy and pathological knees. This work represents the first deep learning regression model for automated patellofemoral annotation trained on both physiologic and pathologic CT imaging at this scale. This novel model can enhance our ability to analyze the anatomy of the patellofemoral compartment at scale.
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Affiliation(s)
- Zelong Liu
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Alexander Zhou
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Valentin Fauveau
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Justine Lee
- Department of Diagnostic, Molecular, and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Philip Marcadis
- Department of Diagnostic, Molecular, and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Zahi A. Fayad
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Diagnostic, Molecular, and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jimmy J. Chan
- Department of Orthopedics and Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - James Gladstone
- Department of Orthopedics and Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Xueyan Mei
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Mingqian Huang
- Department of Diagnostic, Molecular, and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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Connolly P, Coombs S, Schwarzkopf R. Mechanical complications after total knee arthroplasty. Expert Rev Med Devices 2023; 20:1105-1117. [PMID: 37950354 DOI: 10.1080/17434440.2023.2282744] [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: 08/06/2023] [Accepted: 11/08/2023] [Indexed: 11/12/2023]
Abstract
INTRODUCTION With the increasing demand for total knee arthroplasty (TKA) and the burden of revision TKA on the healthcare system, as well as the quality of life implications for patients, it is extremely important for surgeons to be able to anticipate and prevent TKA mechanical complications. Surgeons must be familiar with the different causes and mechanisms of TKA complications so that they can properly treat patients with failed TKAs and better avoid these complications. AREAS COVERED This review addresses TKA mechanical complications and provides context for the topic. A detailed review of surgical factors, implant factors, and patient factors that contribute to mechanical complications after TKA is provided. All of the literature cited in this review was gathered from the PubMed online database using different keywords based on the section of the manuscript. EXPERT OPINION As surgeons and engineers solve certain issues in TKA, new challenges will inevitably arise. We must continue to push forward and innovate from both a surgical technique and implant design perspective.
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Affiliation(s)
- Patrick Connolly
- Department of Orthopedic Surgery, NYU Langone Health, New York, NY, USA
| | - Stefan Coombs
- Department of Orthopedic Surgery, NYU Langone Health, New York, NY, USA
| | - Ran Schwarzkopf
- Department of Orthopedic Surgery, NYU Langone Health, New York, NY, USA
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Tu Y, Ning Y, Li K, Pan Z, Xie J, Yang S, Zhang Y. After-hour elective total knee arthroplasty does not affect clinical outcomes but negatively affects alignment. Arch Orthop Trauma Surg 2023; 143:2129-2134. [PMID: 35614348 DOI: 10.1007/s00402-022-04490-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 05/16/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION In cases of limited medical resources, elective total knee arthroplasty (TKA) sometimes needs to be performed after typical work hours. However, surgeon fatigue and logistical factors may potentially affect outcomes. This study aimed to detect whether after-hour procedures impair outcomes after TKA. MATERIALS AND METHODS Elective unilateral TKA from Jan 1, 2016 to Nov 31, 2018 was retrospectively selected and separated into two groups. Procedures started from 8:00 A.M. to 5:29 P.M. were identified as day-time surgeries, whereas those started from 5:30 P.M. to 11:59 P.M. were considered after-hour surgeries. Operative period, Knee Society Score (KSS), range of motion (ROM), total blood loss, length of hospital stay (LOS), and postoperative adverse events and complications were compared. Additionally, the components were evaluated radiologically. RESULTS A total of 321 patients were selected, including 258 (80.37%) patients in the day-time group and 63 (19.63%) patients in the after-hour group. Operative period, LOS, total blood loss were similar between groups. The overall and each specific incidence of postoperative complications were comparable between the two groups, but the incidence of postoperative vomiting (POV) was higher in the after-hour group. There was no significant difference in knee joint function as shown by the KSS and ROM, both on the 3rd day and at 2 years after surgeries. Radiologically, there were no significant differences between the two groups in the femoral notches (P = 0.592). However, better coronal alignment was detected in the day-time group (P = 0.002), consistent with which there were less outliers (P = 0.033). CONCLUSION After-hour TKA procedure does not exert an impact on clinical outcomes, but negatively affects lower limb alignment. Besides, after-hour TKA surgery impairs patients' comfort by increasing POV.
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Affiliation(s)
- Yuesheng Tu
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Yanhong Ning
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Kangxian Li
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Zhijie Pan
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Jiajun Xie
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Sheng Yang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China
| | - Yang Zhang
- Division of Orthopaedic Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue, Guangzhou, 510515, Guangdong, China.
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Patellar resurfacing was not associated with a clinically significant advantage when a modern patellar friendly total knee arthroplasty is employed: A systematic review and meta-analysis. Knee 2023; 41:329-341. [PMID: 36827957 DOI: 10.1016/j.knee.2023.01.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 01/19/2023] [Accepted: 01/28/2023] [Indexed: 02/26/2023]
Abstract
BACKGROUND Modern total knee arthroplasty (TKA) femoral components are designed to provide a more optimal articular surface for the patella whether or not it has been resurfaced. Previous systematic reviews comparing outcomes of patellar resurfacing and no resurfacing combine both historic and modern designs. AIMS The aim of this study was to investigate the effect of patellar resurfacing in modern "patellar friendly" implants on (1) incidence of anterior knee pain, (2) patient reported outcomes (3) complication rates, and (4) reoperation rates compared with unresurfaced patellae in primary TKA. METHODS MEDline, PubMed and google scholar studies were evaluated using SIGN assessment tool and data analysis was conducted using Review Manager 5.2 on only randomised controlled trials. The search terms were: arthroplasty, replacement, knee (Mesh), TKA, prosthesis, patella, patellar resurfacing, patellar retaining. RESULTS Thirty-two randomised controlled studies were identified that reported the type of TKA implant used: 11 used modern "patellar friendly" implants; and 21 older "patellar non-friendly" implants. Among "patellar friendly" TKAs there were no significant differences in anterior knee pain rates between resurfaced and unresurfaced groups. Patellar resurfacing with "patellar friendly" implants had significantly higher clinical (mean difference (MD) -0.77, p = 0.007) and functional (MD -1.87, p < 0.0001) knee society scores (KSS) than unresurfaced counterparts but these did not exceed the minimal clinically important difference (MCID). Resurfacing with "patellar friendly" implants was not associated with a significant (p = 0.59) difference in the Oxford knee score (OKS), in contrast when a "patellar non-friendly" implant was used there was a significant difference (MD 3.3, p = 0.005) in favour of resurfacing. There was an increased risk of reoperation for unresurfaced TKAs with "non-patellar friendly" implants (Odds ratio (OR) 1.68, 95% CI 1.03-2.74, p = 0.04), but not for unresurfaced patellae with "patellar friendly" implants (OR 1.17, CI 0.59-2.30). CONCLUSIONS Patellar resurfacing in combination with a modern patellar friendly implant was not associated with a lower rate of anterior knee pain, complications, or reoperations compared to not resurfacing, nor did it give a clinically significant improvement in knee specific function. In contrast patellar resurfacing in combination with a "non-friendly" TKA implant was associated with a significantly better OKS and lower reoperation rate. Implant design should be acknowledged when patellar resurfacing is being considered.
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Gharaibeh MA, Tarassoli P, Chen DB, Wood JA, Beuzeville S, Quinn R, Harris IA, MacDessi SJ. Does Choice of Patellar Implant in Total Knee Arthroplasty Matter?: A Randomized Comparative Trial of 3 Commonly Used Designs. J Bone Joint Surg Am 2023; 105:145-156. [PMID: 36651890 DOI: 10.2106/jbjs.22.00655] [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: 01/19/2023]
Abstract
BACKGROUND There is currently a lack of evidence to identify the optimal patellar implant design in total knee arthroplasty (TKA). The aim of this study was to assess clinical, intraoperative, radiographic, and scintigraphic differences between inlay (IN), onlay round (OR), and onlay oval (OO) patellar implants. METHODS A parallel-group, double-blinded, randomized trial compared IN, OR, and OO patellar implants using the same posterior-stabilized TKA prosthesis for each. Patient outcomes were prospectively followed for a minimum of 2 years, with survivorship outcomes followed for a mean of 5 years. The primary outcome was the between-group differences in the mean Kujala score change from preoperatively to 2 years postoperatively. The secondary outcomes included differences in other knee-specific and general health outcomes, intraoperative characteristics, radiographic parameters, patellar vascularity, and implant survivorship. RESULTS A total of 121 participants (40 in the IN group, 41 in OR group, 40 in the OO group) were allocated to 1 of 3 implant designs. At 2 years postoperatively, there were no significant differences in Kujala score changes between groups (p = 0.7; Kruskal-Wallis test). Compared with the IN group, the OR group showed greater improvements in Knee injury and Osteoarthritis Outcome Score (KOOS) Activities of Daily Living and in KOOS Quality of Life compared with the OO group. However, the OO design exhibited better bone coverage and lower lateral facetectomy rates compared with the IN and OR designs. The IN group had more lateral contact compared with the OO group (p = 0.02; Fisher exact test), but the overall value for lateral contact was not significant (p = 0.09; chi-square test). There were no differences in postoperative scintigraphic vascularity (p = 0.8; chi-square test). There was 1 revision for infection at 3 years postoperatively in the OO group, and no revision in the other groups. CONCLUSIONS Patellar design did not influence patellofemoral outcomes or survivorship. However, OR implants showed improvements in some secondary patient-reported outcome measures, and OO implants exhibited superior bone coverage and improvements in several intraoperative, radiographic, and scintigraphic outcomes. These findings, combined with superior long-term implant survivorship from previous studies, add support for the use of onlay designs in TKA. LEVEL OF EVIDENCE Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Monther A Gharaibeh
- Department of General and Special Surgery, Faculty of Medicine, The Hashemite University, Zarqa, Jordan
| | - Payam Tarassoli
- Sydney Knee Specialists, Kogarah, New South Wales, Australia
| | - Darren B Chen
- Sydney Knee Specialists, Kogarah, New South Wales, Australia.,St George Private Hospital, Kogarah, New South Wales, Australia
| | - Jil A Wood
- Sydney Knee Specialists, Kogarah, New South Wales, Australia
| | - Scott Beuzeville
- St George Private Hospital Nuclear Medicine, Kogarah, New South Wales, Australia
| | - Richard Quinn
- St George Private Hospital Nuclear Medicine, Kogarah, New South Wales, Australia
| | - Ian A Harris
- Ingham Institute for Applied Medical Research, South Western Sydney Clinical School, University of New South Wales, Sydney, New South Wales, Australia
| | - Samuel J MacDessi
- Sydney Knee Specialists, Kogarah, New South Wales, Australia.,St George Private Hospital, Kogarah, New South Wales, Australia.,St George Hospital Clinical School, University of New South Wales, Sydney, New South Wales, Australia
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Mismatch between trochlear coronal alignment of arthritic knees and currently available prosthesis: a morphological analysis of 4116 knees and 45 implant designs. Knee Surg Sports Traumatol Arthrosc 2022:10.1007/s00167-022-07251-5. [PMID: 36456826 DOI: 10.1007/s00167-022-07251-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/21/2022] [Indexed: 12/05/2022]
Abstract
PURPOSE In up to a fifth of total knee replacements (TKR), surgeons are not capable of achieving good clinical and functional results. Despite comprehensive diagnostic workup, an underlying cause is not always identified in these patients. The purpose of this study is to compare native and prosthetic trochlear anatomies, to evaluate a potential source of morphologic mismatch and theoretically, of poor clinical outcomes. METHODS Native trochlear angles of 4116 knee CTs from 360 Knee Systems database of arthritic pre-operative TKR patients were evaluated. A semi-automated tridimensional analysis was performed to define the native trochlear angle in the coronal plane (NTA) among other 142 parameters. An active search was conducted to identify currently available TKR models; prosthetic trochlear orientation in the coronal plane (PTA) was extracted from the technical data provided by manufacturers. RESULTS The mean native trochlear angle (NTA) was 1.6° ± 6.6° (valgus) with a range from - 23.8° (varus) to 30.3°(valgus). A valgus NTA was present in 60.6% of the knees and 39.4% of them had a varus NTA. 89 TKR models were identified; trochlear details were available for 45 of them, of which 93% were designed with a valgus orientation of the prosthetic trochlear angle (PTA) and 6.9% showed a neutral (0°) PTA. Varus alignment of PTA was not present in any system. Angular numeric values for PTA were available for 34 models; these ranged from 0° to 15° of valgus, with a median value of 6.18° (SD ± 2.88°). CONCLUSION This study shows a significant mismatch between native and prosthetic trochlear angles. A relevant proportion of the studied knees (41.45%) fall out of the trochlear angle range of currently available implants; representing a potential source for biomechanical imbalance. While further research is warranted to fully understand the clinical implications of the present study, manufacturers may need to take these findings into account for future implant designs. LEVEL OF EVIDENCE Level III, retrospective cohort study.
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15
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Limberg AK, Tibbo ME, Ollivier M, Tammachote N, Abdel MP, Berry DJ. Factors Affecting the Risk of Aseptic Patellar Complications in Primary TKA Performed with Cemented All-Polyethylene Patellar Resurfacing. J Bone Joint Surg Am 2022; 104:451-458. [PMID: 34932523 DOI: 10.2106/jbjs.21.00356] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Patellar complications are a consequential cause of failure of primary total knee arthroplasty (TKA). The purpose of this study was to evaluate the association of demographic and patient factors with the long-term risk of patellar complications as a function of time in a very large cohort of primary TKAs performed with patellar resurfacing. METHODS We identified 27,192 primary TKAs utilizing cemented all-polyethylene patellar components that were performed at a single institution from 1977 through 2015. We evaluated the risk of any aseptic patellar complication and any aseptic patellar reoperation or revision, subanalyzed risks of reoperation or revision for loosening, maltracking/instability, and wear, and evaluated the risk of clinical diagnosis of patellar fracture and clunk/crepitus. The mean age at TKA was 68 years (range, 18 to 99 years); 57% of the patients were female. The mean body mass index (BMI) was 32 kg/m2. The primary diagnosis was osteoarthritis in 83%, and 70% of the TKAs were posterior-stabilized. Median follow-up was 7 years (range, 2 to 40 years). Risk factors for each outcome were evaluated with Cox regression models. RESULTS Nine hundred and seventy-seven knees with all-polyethylene patellae developed patellar complications. Survivorship free from any aseptic patellar complication was 93.3% at 20 years. Twenty-year survivorship free from any aseptic patellar reoperation was 97.3% and free from any aseptic patellar revision was 97.4%. Fifteen-year survivorship for the same end points for procedures performed from 2000 to 2015 was 95.7%, 99.2% and 99.3% respectively, representing substantial improvements compared with implants placed before 2000. Univariate analysis demonstrated that male sex (hazard ratio [HR], 1.4), an age of <65 years (HR, 1.3), and a BMI of ≥30 kg/m2 (HR, 1.2) were associated with increased risk of patellar complications (all p ≤0.01). Posterior-stabilized designs were associated with fewer patellar reoperations and revisions overall (HR, 0.4 and 0.4; p < 0.001) but higher risk of patellar clunk/crepitus (HR, 14.1; p < 0.001). CONCLUSIONS The 20-year survivorship free from any aseptic patellar complication in this series of cemented all-polyethylene patellae was 93%. Important risk factors for any aseptic patellar complication were male sex, an age of <65 years, a BMI of ≥30 kg/m2, and a patella implanted before 2000. LEVEL OF EVIDENCE Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Afton K Limberg
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Meagan E Tibbo
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Matthieu Ollivier
- Department of Orthopedic Surgery, Aix-Marseille Université, Marseille, France
| | | | - Matthew P Abdel
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Daniel J Berry
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
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Karachalios T, Komnos G, Hantes M, Varitimidis S. Evaluating the "Patella-Friendly" Concept in Total Knee Arthroplasty: A Minimum 15-Year Follow-Up Outcome Study Comparing Constant Radius, Multiradius Cruciate-Retaining, and Nonanatomical Cruciate-Retaining Implants. J Arthroplasty 2021; 36:2771-2778. [PMID: 33771400 DOI: 10.1016/j.arth.2021.03.007] [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: 01/03/2021] [Revised: 02/17/2021] [Accepted: 03/01/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Patella-friendly femoral components were developed in order to reduce anterior knee pain and patellofemoral complications in total knee arthroplasty (TKA), but their effect on long-term outcome is still unclear. METHODS We retrospectively evaluated prospectively collected data from 3 groups consisting of 100 patients (100 knees in each). In group A, the constant radius a-MP, in group B the multiradius cruciate-retaining Genesis II, and in group C the nonanatomic, multiradius, cruciate-retaining AGC TKA was implanted. Patients of all groups were matched for age, gender, side, body mass index, and length of follow-up. Preoperative and postoperative clinical outcome data in the form of Knee Society System (KSS), Short Form-12, Western Ontario and McMaster University Osteoarthritis Index, and Oxford Knee Score were available at regular intervals for groups A and B. For patients of group C, KSS score data were available at the same time intervals. In all groups, the patellofemoral compartment was assessed using the Clinical Patella Score scale. Anterior knee pain, secondary patella resurfacing, implant failure, and radiological outcome were assessed in patients of all groups. RESULTS At 10-year and 15-year follow-up, patients of group A showed statistically significant (s.s.) higher (all P = .000) KSS values as compared to those of groups B and C. At 15-year follow-up, patients of group B showed s.s. higher (P = .001) KSS values as compared to those of group C. At 10-year and 15-year follow up, patients of group A showed s.s. higher (all P = .00) Western Ontario and McMaster University Osteoarthritis Index and Oxford Knee Score values as compared to those of group B. At 15-year follow-up only, patients of group A showed s.s. higher (P = .00) Short Form-12 (physical) values as compared to those of group B. In terms of Clinical Patella Score, patients in group A had s.s. higher values (P = .05) when compared to those of groups B and C. Anterior knee pain was recorded in 4.4% of TKAs in group A, 7.5% in group B, and 17.2% in group C. One (1.1%) patient in group A, 3 (3.25%) in group B, and 7 (8%) in group C underwent secondary resurfacing. CONCLUSION Anatomical, patella-friendly, constant radius femoral components outperform others in reducing anterior knee pain and patella complications in TKA in which the patellae are left nonresurfaced.
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Affiliation(s)
- Theofilos Karachalios
- Orthopaedic Department, School of Health Sciences, Faculty of Medicine, University of Thessalia, University General Hospital, Biopolis, Larissa, Greece
| | - George Komnos
- Orthopaedic Department, University General Hospital, Biopolis, Larissa, Greece
| | - Michael Hantes
- Orthopaedic Department, School of Health Sciences, Faculty of Medicine, University of Thessalia, University General Hospital, Biopolis, Larissa, Greece
| | - Sokratis Varitimidis
- Orthopaedic Department, School of Health Sciences, Faculty of Medicine, University of Thessalia, University General Hospital, Biopolis, Larissa, Greece
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Mochizuki T, Yano K, Ikari K, Okazaki K. Difference in patient-reported outcomes of various patellar component designs in total knee arthroplasty: A randomized clinical study. J Orthop Surg (Hong Kong) 2021; 29:2309499021996068. [PMID: 33629887 DOI: 10.1177/2309499021996068] [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] [Indexed: 12/31/2022] Open
Abstract
PURPOSE This study investigated the clinical effects of different patellar components without being affected by the femoral component design in total knee arthritis (TKA) for patients with knee osteoarthritis (OA). METHODS In total, 48 patients with OA who met the criteria of the American College of Rheumatology for OA were enrolled and randomly assigned in a 1:1 ratio to two groups according to the usage of patellar component design for TKA (medialized dome type [dome group] or medialized anatomic type [anatomic group]). To evaluate the clinical outcomes for TKA, knee range of motion (ROM), pain intensity of 0-100 mm visual analog scale (pain VAS), and the Japanese Knee Osteoarthritis Measure (JKOM) score were obtained at baseline and year 1. RESULTS The difference in knee ROM, pain VAS, or total JKOM score at year 1 was not significant between the dome and anatomic groups (p = 0.398, 0.733 and 0.536, respectively). Moreover, similar results were obtained for changes in knee ROM, pain VAS, or total JKOM scores from baseline. In both groups, the pain VAS and total JKOM scores were significantly improved at year 1. CONCLUSION Both dome and anatomic groups in TKA are significantly effective for pain and function using the JKOM score. However, their efficacy did not differ, according to the JKOM score. Results of this study are rare information focusing on the patellar component design and provide one of the insights into the TKA clinical management.
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Affiliation(s)
- Takeshi Mochizuki
- Department of Orthopaedic Surgery, Kamagaya General Hospital, Chiba, Japan
| | - Koichiro Yano
- Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Katsunori Ikari
- Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Ken Okazaki
- Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan
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18
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Wang J, Zhou Y, Wang YT, Min L, Zhang YQ, Lu MX, Tang F, Luo Y, Zhang YH, Zhang XL, Tu CQ. Three-dimensional-printed custom-made patellar endoprosthesis for recurrent giant cell tumor of the patella: A case report and review of the literature. World J Clin Cases 2021; 9:2524-2532. [PMID: 33889617 PMCID: PMC8040175 DOI: 10.12998/wjcc.v9.i11.2524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/04/2021] [Accepted: 02/10/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Giant cell tumor (GCT) is a benign lesion and rarely involves the patella. This disease is characterized by a relatively high recurrence rate after primary treatment. En bloc resection has been a predominant option for recurrent GCT. However, total patellectomy can lead to disruption of the knee. Therefore, exploration of functional reconstruction of the extensor mechanism is worthwhile.
CASE SUMMARY A 54-year-old woman presented with right knee pain and swelling, and was diagnosed as having a GCT in the patella following curettage and autograft. Medical imaging revealed a lytic and expanded lesion involving the whole patella with focal cortical breaches and pathological fracture. Based on the combination of histological, radiological, and clinical features, a diagnosis of recurrent GCT in the patella was made (Campanacci grade III). After a multidisciplinary team discussion, three-dimensional (3D)-printed custom-made patellar endoprosthesis was performed following en bloc resection for reconstructing the extensor mechanism. The patient was followed for 35 mo postoperatively. No evidence of local recurrence, pulmonary metastasis, or osteoarthritis of the right knee was observed. The active flexion arc was 0°-120°, and no extension lag was detected. A favorable patellar tracking and height (Insall-Salvati ratio 0.93) were detected by radiography.
CONCLUSION We depict a case of a GCT at the right patella, which was successfully treated by patellectomy and 3D-printed custom-made endoprosthetic replacement. The patella normal reconstruction, the precise-fit articular design, and gastrocnemius flap augmentation could lead to satisfactory knee function and a low rate of complications in the short-term follow-up.
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Affiliation(s)
- Jie Wang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yong Zhou
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yi-Tian Wang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Li Min
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yu-Qi Zhang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Min-Xun Lu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Fan Tang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yi Luo
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Ya-Han Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Xian-Liang Zhang
- Department of Pathology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Chong-Qi Tu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
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Dubin JA, Westrich GH. Preoperative activity levels are an important indicator of postoperative activity in cementless TKAs. J Orthop 2020; 22:602-605. [PMID: 33299273 DOI: 10.1016/j.jor.2020.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 11/15/2020] [Indexed: 12/20/2022] Open
Abstract
Introduction It is of interest if preoperative activity level has an impact on postoperative activity level following cementless TKA. Methods This review contained 127 patients who had a preoperative Lower Extremity Activity Scale (LEAS) score ≥ to 10 (active patients) and 121 patients <10 (inactive patients). Results Postoperatively, the results showed a difference in LEAS Activity (Active 10.5 vs. Inactive 8.7, p < 0.001). Active patients had a drop in their activity level by 1.2 on the LEAS score, yet inactive patients increased by 1.6 (p < 0.0001). Conclusion Preoperative activity levels are a good indicator for postoperative activity in cementless TKA.
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Affiliation(s)
- Jeremy A Dubin
- Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, 535 East 70th, Street, NY, NY, 10021, USA
| | - Geoffrey H Westrich
- Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, 535 East 70th, Street, NY, NY, 10021, USA
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Roussot MA, Vles GF, Oussedik S. Clinical outcomes of kinematic alignment versus mechanical alignment in total knee arthroplasty: a systematic review. EFORT Open Rev 2020; 5:486-497. [PMID: 32953134 PMCID: PMC7484715 DOI: 10.1302/2058-5241.5.190093] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Although mechanical alignment (MA) has traditionally been considered the gold standard, the optimal alignment strategy for total knee arthroplasty (TKA) is still debated. Kinematic alignment (KA) aims to restore native alignment by respecting the three axes of rotation of the knee and thereby producing knee motion more akin to the native knee. Designer surgeon case series and case control studies have demonstrated excellent subjective and objective clinical outcomes as well as survivorship for KA TKA with up to 10 years follow up, but these results have not been reproduced in high-quality randomized clinical trials. Gait analyses have demonstrated differences in parameters such as knee adduction, extension and external rotation moments, the relevance of which needs further evaluation. Objective improvements in soft tissue balance using KA have not been shown to result in improvements in patient-reported outcomes measures. Technologies that permit accurate reproduction of implant positioning and objective measurement of soft tissue balance, such as robotic-assisted TKA and compartmental pressure sensors, may play an important role in improving our understanding of the optimum alignment strategy and implant position.
Cite this article: EFORT Open Rev 2020;5:486-497. DOI: 10.1302/2058-5241.5.190093
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Affiliation(s)
- Mark Anthony Roussot
- Department of Trauma and Orthopaedics, University College London Hospitals, London, UK.,Department of Orthopaedic Surgery, University of Cape Town, South Africa
| | - Georges Frederic Vles
- Department of Trauma and Orthopaedics, University College London Hospitals, London, UK
| | - Sam Oussedik
- Department of Trauma and Orthopaedics, University College London Hospitals, London, UK
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21
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Khasian M, LaCour MT, Coomer SC, Bolognesi MP, Komistek RD. In Vivo Knee Kinematics for a Cruciate Sacrificing Total Knee Arthroplasty Having Both a Symmetrical Femoral and Tibial Component. J Arthroplasty 2020; 35:1712-1719. [PMID: 32111514 DOI: 10.1016/j.arth.2020.02.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/28/2020] [Accepted: 02/03/2020] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Early total knee arthroplasty (TKA) designs were symmetrical, but lead to complications due to over-constraint leading to loosening and poor flexion. Next-generation TKAs have been designed to include asymmetry, pertaining to the trochlear groove, femoral condylar shapes, and/or the tibial component. More recently, an advanced posterior cruciate sacrificing (PCS) TKA was designed to include both a symmetrical femoral component with a patented V-shaped trochlear groove and a symmetrical tibial component with an ultracongruent insert, in an attempt to reduce inventory costs. Because previous PCS TKA designs produced variable results, the objective of this study is to determine and evaluate the in vivo kinematics for subjects implanted with this symmetrical TKA. METHODS Twenty-one subjects, implanted with symmetrical PCS fixed-bearing TKA, were asked to perform a weight-bearing deep knee bend (DKB) while under fluoroscopic surveillance. A 3-dimensional to 2-dimensional registration technique was used to determine each subject's anteroposterior translation of lateral and medial femoral condyles as well as tibiofemoral axial rotation and their weight-bearing knee flexion. RESULTS During the DKB, the average active maximum weight-bearing flexion was 111.7° ± 13.3°. On average, from full extension to maximum knee flexion, subjects experienced -2.5 ± 2.0 mm of posterior femoral rollback of the lateral condyle and 2.5 ± 2.2 mm of medial condyle motion in the anterior direction. This medial condyle motion was consistent for the majority of the subjects, with the lateral condyle exhibiting rollback from 0° to 60° of flexion and then experienced an average anterior motion of 0.3 mm from 60° to 90° of knee flexion. On average, the subjects in this study experienced 6.6°± 3.3° of axial rotation, with most of the rotation occurring in early flexion, averaging 4.9°. CONCLUSION Although subjects in this study were implanted with a symmetrical PCS TKA, they did experience femoral rollback of the lateral condyle and a normal-like pattern of axial rotation, although less in magnitude than the normal knee. The normal axial rotation pattern occurred because the lateral condyle rolled in the posterior direction, while the medial condyle moved in the anterior direction. Interestingly, the magnitude of posterior femoral rollback and axial rotation for subjects in this study was similar in magnitude reported in previous studies pertaining to asymmetrical TKA designs. It is proposed that more patients be analyzed having this TKA implanted by other surgeons.
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Affiliation(s)
- Milad Khasian
- MABE Department, Center for Musculoskeletal Research, University of Tennessee, Knoxville, TN
| | - Michael T LaCour
- MABE Department, Center for Musculoskeletal Research, University of Tennessee, Knoxville, TN
| | - Seth C Coomer
- MABE Department, Center for Musculoskeletal Research, University of Tennessee, Knoxville, TN
| | | | - Richard D Komistek
- MABE Department, Center for Musculoskeletal Research, University of Tennessee, Knoxville, TN
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Russell F, Kormushev P, Vaidyanathan R, Ellison P. The Impact of ACL Laxity on a Bicondylar Robotic Knee and Implications in Human Joint Biomechanics. IEEE Trans Biomed Eng 2020; 67:2817-2827. [PMID: 32031928 DOI: 10.1109/tbme.2020.2971855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Elucidating the role of structural mechanisms in the knee can improve joint surgeries, rehabilitation, and understanding of biped locomotion. Identification of key features, however, is challenging due to limitations in simulation and in-vivo studies. In particular the coupling of the patello-femoral and tibio-femoral joints with ligaments and its impact on joint mechanics and movement is not understood. We investigate this coupling experimentally through the design and testing of a robotic sagittal plane model. METHODS We constructed a sagittal plane robot comprised of: 1) elastic links representing cruciate ligaments; 2) a bi-condylar joint; 3) a patella; and 4) actuator hamstrings and quadriceps. Stiffness and geometry were derived from anthropometric data. [Formula: see text] squatting tests were executed at speeds of [Formula: see text] over a range of anterior cruciate ligament (ACL) slack lengths. RESULTS Increasing ACL length compromised joint stability, yet did not impact quadriceps mechanical advantage and force required for squat. The trend was consistent through varying condyle contact point and ligament force changes. CONCLUSION The geometry of the condyles allows the ratio of quadriceps to patella tendon force to compensate for contact point changes imparted by the removal of the ACL. Thus the system maintains a constant mechanical advantage. SIGNIFICANCE The investigation uncovers critical features of human knee biomechanics. Findings contribute to understanding of knee ligament damage, inform procedures for knee surgery and orthopaedic implant design, and support design of trans-femoral prosthetics and walking robots. Results further demonstrate the utility of robotics as a powerful means of studying human joint biomechanics.
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