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Fitoussi A, Dartus J, Erivan R, Pasquier G, Migaud H, Putman S, Chazard E. Management of medial femorotibial osteoarthritis: Epidemiology, and survival of unicompartmental knee arthroplasty versus valgus high tibial osteotomy in France. Study of 108,007 cases from the French National Hospitals Database. Orthop Traumatol Surg Res 2023; 109:103692. [PMID: 37776952 DOI: 10.1016/j.otsr.2023.103692] [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: 10/24/2022] [Revised: 06/16/2023] [Accepted: 06/26/2023] [Indexed: 10/02/2023]
Abstract
INTRODUCTION Unicompartmental knee arthroplasty (UKA) and valgus high tibial osteotomy (HTO) are two options for isolated medial femorotibial osteoarthritis in genu varum. In the absence of registries for osteotomies and for arthroplasty in the knee, epidemiological data are hard to obtain in France. We therefore performed a retrospective study, with the aims of: 1) estimating UKA and HTO survival without revision by total knee arthroplasty (TKA), and 2) assessing risk factors for revision according to treatment group. HYPOTHESIS Medium-term survival is better with HTO than UKA in under-70-year-olds. MATERIALS AND METHOD All elderly patients undergoing HTO or UKA in the French National Hospitals Database for the period 2011-2020 were included: i.e., 108,007 patients; 43,537 HTO (29,330 male, 14,207 female; mean age 49.7 years, 95% CI 49.6-49.8) and 64,470 UKA (31,181 male, 33,289 female; mean age 60.5 years, 95% CI 60.5-60.6). RESULTS Survival free of revision by TKA was 75.8% (95% CI=75.2-76.4) for UKA and 80.6% (95% CI=80.0-81.3) for HTO (p<0.00001). In UKA, revision risk factors comprised: low annual center volume (<17 UKAs per year) (HR=1.50; 95% CI=1.41-1.59), obesity (HR=1.25; 95% CI=1.18-1.32), and age <60years, with maximum risk for 50-59years (HR=2.41; 95% CI=1.83-3.16 in 50-59 year-olds). In HTO, revision risk factors comprised: obesity (HR=1.42; 95% CI=1.31-1.53), rheumatoid arthritis (HR=2.75; 95% CI=1.37-5.51), joint chondrocalcinosis (HR=2.01; 95% CI=1.18-3.39), and age >60years (HR=8.81; 95% CI=7.23-19.73 in 60-69-year-olds). Male gender was a protective factor against revision in both groups: UKA, HR=0.75 (95% CI=0.72-0.79); HTO, HR=0.73 (95% CI=0.69-0.77). The number of UKAs increased over the years, matching the increase in arthroplasty in France, with a decrease in HTOs until 2019. CONCLUSION HTO showed better medium-term survival than UKA in under-70-year-olds in France. Even so, indications decreased in favor of UKA, although the respective risk factors differ. These findings suggest that conservative surgery still has a role, depending on osteoarthritis stage. LEVEL OF EVIDENCE III; retrospective comparative study.
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Affiliation(s)
- Allison Fitoussi
- Service de chirurgie orthopédique, hôpital Roger-Salengro, centre hospitalier universitaire (CHU) de Lille, place de Verdun, 59000 Lille, France.
| | - Julien Dartus
- Service de chirurgie orthopédique, hôpital Roger-Salengro, centre hospitalier universitaire (CHU) de Lille, place de Verdun, 59000 Lille, France
| | - Roger Erivan
- SIGMA Clermont, ICCF, université Clermont Auvergne, CHU Clermont-Ferrand, CNRS, 63000 Clermont-Ferrand, France
| | - Gilles Pasquier
- Service de chirurgie orthopédique, hôpital Roger-Salengro, centre hospitalier universitaire (CHU) de Lille, place de Verdun, 59000 Lille, France
| | - Henri Migaud
- Service de chirurgie orthopédique, hôpital Roger-Salengro, centre hospitalier universitaire (CHU) de Lille, place de Verdun, 59000 Lille, France
| | - Sophie Putman
- Service de chirurgie orthopédique, hôpital Roger-Salengro, centre hospitalier universitaire (CHU) de Lille, place de Verdun, 59000 Lille, France; ULR 2694 METRICS, université de Lille, CHU de Lille, 59000 Lille, France
| | - Emmanuel Chazard
- ULR 2694 METRICS, université de Lille, CHU de Lille, 59000 Lille, France
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Abdelaal AM, Khalifa AA. Total knee arthroplasty post-high tibial osteotomy, results of an early experience from a North African arthroplasty unit, and a comprehensive review of the literature. J Orthop Surg Res 2023; 18:705. [PMID: 37730629 PMCID: PMC10510125 DOI: 10.1186/s13018-023-04199-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 09/13/2023] [Indexed: 09/22/2023] Open
Abstract
PURPOSE To report an early experience after converting HTO to TKA by reporting the incidence of functional, radiological, and complications in a single surgeon case series from a North African specialized arthroplasty unit. METHODS Between 2010 and 2020, 33 knees in 31 patients (two bilateral) were operated upon, 24 females and seven males, had a mean age of 65 ± 4.5 years; 17 (51.5%) knees had medial wedge opening (WMO), while 16 (48.5%) had lateral wedge closure (LWC) osteotomies. The mean time from HTO to TKA was 8.1 ± 3.3 years. A posterior stabilized (PS) implant was used in 31 (93.9%), while in 2 (6.1%), a varus-valgus constrained (VVC) implant was used. A tibial stem was needed in 13 (39.4%) knees. The functional assessment was performed according to the Knee Society Scoring System (KSS). The radiographic assessment included the anatomical femorotibial angle (aFTA) for alignment, the medial proximal tibial angle (MPTA), and the tibial slope (TS). RESULTS After a mean follow-up of 4.3 ± 1.1 years, the KSS knee and function sub-scores improved from a preoperative mean of 41 ± 8.9 (26 to 57) and 37.7 ± 9.2 (25 to 55) points to 91.3 ± 3.8 (81 to 94) and 85.5 ± 5 (80 to 95) points at the last follow-up, respectively (P < 0.05). The preoperative knee flexion improved from a mean of 84.5° ± 15.9 (55 to 110) to 110.6° ± 9.3 (95 to 125) (P < 0.05). The aFTA improved from a preoperative mean of 182.2° ± 10.3 (164 to 205) to a postoperative mean of 186° ± 2.6 (179 to 190) (P < 0.05). The MPTA changed from a preoperative mean of 88.4° ± 6.7 (77 to 102) to a postoperative (tibial component alignment) mean of 90° ± 1.7 (85 to 94) (P < 0.05). The mean preoperative TS changed from 80.9° ± 7.3 (68 to 96) to a mean postoperative of 86.9° ± 1.3 (83 to 89) (P < 0.05). Non-progressive radiolucent lines were detected at the tibial component in four (12%) knees. Complications were reported in seven (21.2%) knees; no revision was needed in any knee. CONCLUSIONS The authors' early experience showed improved functional and radiological outcomes; however, the complication incidence was relatively high, but no knees required revision. A longer follow-up is mandatory to prove the consistency of the results.
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Affiliation(s)
- Ahmed M Abdelaal
- Orthopaedic Department, Assiut University Hospital, Assiut, Egypt
- Hospital for Advanced Orthopaedics, Assiut, Egypt
| | - Ahmed A Khalifa
- Hospital for Advanced Orthopaedics, Assiut, Egypt.
- Orthopedics Department, Qena Faculty of Medicine, South Valley University, Kilo 6 Qena-Safaga Highway, Qena, 83523, Egypt.
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Erard J, Schmidt A, Batailler C, Shatrov J, Servien E, Lustig S. Higher knee survivorship in young patients with monocompartmental osteoarthritis and constitutional deformity treated by high tibial osteotomy then total knee arthroplasty compared to an early total knee arthroplasty : a comparative study at a minimum follow-up of ten years. Bone Jt Open 2023; 4:62-71. [PMID: 36722347 PMCID: PMC10011927 DOI: 10.1302/2633-1462.42.bjo-2023-0002.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
AIMS The use of high tibial osteotomy (HTO) to delay total knee arthroplasty (TKA) in young patients with osteoarthritis (OA) and constitutional deformity remains debated. The aim of this study was to compare the long-term outcomes of TKA after HTO compared to TKA without HTO, using the time from the index OA surgery as reference (HTO for the study group, TKA for the control group). METHODS This was a case-control study of consecutive patients receiving a posterior-stabilized TKA for OA between 1996 and 2010 with previous HTO. A total of 73 TKAs after HTO with minimum ten years' follow-up were included. Cases were matched with a TKA without previous HTO for age at the time of the HTO. All revisions were recorded. Kaplan-Meier survivorship analysis was performed using revision of metal component as the endpoint. The Knee Society Score, range of motion, and patient satisfaction were assessed. RESULTS Mean follow-up was 13 years (SD 3) after TKA in both groups. The 20-year Kaplan-Meier survival estimate was 98.6% in TKA post-HTO group (HTO as timing reference) and 81.4% in control group (TKA as timing reference) (p = 0.030). There was no significant difference in clinical outcomes, radiological outcomes, and complications at the last follow-up. CONCLUSION At the same delay from index surgery (HTO or TKA), a strategy of HTO followed by TKA had superior knee survivorship compared to early TKA at long term in young patients.Level of evidence: IIICite this article: Bone Jt Open 2023;4(2):62-71.
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Affiliation(s)
- Julien Erard
- Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France
| | - Axel Schmidt
- Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France
| | - Cecile Batailler
- Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France.,University Lyon, Claude Bernard Lyon 1 University, Lyon, France
| | - Jobe Shatrov
- Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France.,Sydney Orthopaedic Research Institute, University of Notre Dame Australia, Hornsby and Ku-Ring Hospital, Sydney, Australia
| | - Elvire Servien
- Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France.,Interuniversity Laboratory of Biology of Mobility, Claude Bernard Lyon 1 University, Lyon, France
| | - Sébastien Lustig
- Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France.,University Lyon, Claude Bernard Lyon 1 University, Lyon, France
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Outcomes of Plug Osteochondral Allograft Transplantation With or Without Concomitant Osteotomy for Cartilage Defects in the Knee: Minimum 2-year Follow-up. J Am Acad Orthop Surg 2023; 31:e73-e81. [PMID: 36580053 DOI: 10.5435/jaaos-d-22-00109] [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] [Received: 01/26/2022] [Accepted: 08/05/2022] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Isolated osteochondral defects of the knee can cause notable pain and disability. Osteochondral allograft (OCA) transplantation using trephined plug grafts is a highly effective, often curative, treatment option. In knees with malalignment into the transplanted compartment, osteotomy can be done concurrently. This study investigates early-to-midterm survivorship, as well as clinical and radiographic outcomes, of plug OCAs with and without concomitant osteotomy in the knee. METHODS Plug OCA was done on active, young to middle-aged patients with osteochondral defects ≤4 cm diameter. Prospectively collected data for 102 patients who underwent plug OCA between 2004 and 2020 were reviewed. Survivorship according to Kaplan-Meier analysis was the primary outcome. Failure was defined as conversion to total knee arthroplasty or repeat allograft. Clinical and radiographic outcomes were evaluated using the modified Hospital for Special Surgery (mHSS) score and Kellgren-Lawrence grading. RESULTS Eighty-six patients with a mean age of 29 ± 9.7 years (15 to 54) and a mean follow-up of 6.8 ± 3.7 years (2 to 15.9) were studied. Concomitant realignment osteotomy was done in 66 patients (76.7%). Graft survivorship was 100%, 93.8% (95% confidence interval 90.8% to 96.8%), and 89.7% (95% confidence interval 85.6% to 93.8%) at 2, 5, and 10 to 15 years, respectively. Six grafts (7.0%) required knee arthroplasty at a mean of 4.6 ± 1.8 years (2.2 to 7.1). Most common reasons for revision surgeries with graft retention included implant removal (11.6%), débridement (8.1%), and repeat osteotomy (5.8%). The mean mHSS score of 90.8 ± 10.4 (51 to 100) at the final follow-up was significantly higher than the preoperative value of 72.5 ± 12.1 (36 to 90) (P < 0.001). Subgroup analyses revealed a markedly greater risk of failure in grafts with a diameter of 30 mm or larger. DISCUSSION Plug OCA with or without concurrent realignment osteotomy resulted in an excellent graft survival of 93% at a mean of 6.8 years, with reliable functional improvement demonstrated by notable improvements in mHSS knee scores.
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Legnani C, Parente A, Parente F, Ventura A. Medial unicompartmental knee replacement is a viable treatment option after failed high tibial osteotomy: a systematic review. EFORT Open Rev 2022; 7:569-575. [PMID: 35924648 PMCID: PMC9458945 DOI: 10.1530/eor-21-0133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Purpose Methods Results Conclusions
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Affiliation(s)
- Claudio Legnani
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology and Minimally Invasive Articular Surgery Center, Milan Italy
| | - Andrea Parente
- IRCCS Istituto Ortopedico Galeazzi, Hip and Knee Arthroplasty Surgery Center, Milan, Italy
| | - Franco Parente
- IRCCS Istituto Ortopedico Galeazzi, Hip and Knee Arthroplasty Surgery Center, Milan, Italy
| | - Alberto Ventura
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology and Minimally Invasive Articular Surgery Center, Milan Italy
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van Rensch PJH, Heesterbeek PJC, van Loon CJ. Tibial metaphyseal sleeves in primary total knee arthroplasty following high tibial osteotomy and tibial plateau fracture; preliminary mid-term survival and outcome. Knee 2022; 35:98-104. [PMID: 35276553 DOI: 10.1016/j.knee.2022.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 01/02/2022] [Accepted: 02/25/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Previous high tibial osteotomy (HTO), and tibial plateau fractures (TPF) may cause problems in subsequent total knee arthroplasty (TKA) due to altered metaphyseal bone structure. Higher rates of loosening of the tibial component have been described. In post-HTO and TPF cases, a more durable fixation could be achieved by tibial sleeves. This study investigates the preliminary short-to-midterm clinical and radiographic results in a cohort of these cases. METHODS A cohort of 28 patients was selected, 11 following HTO, and 17 following TPF. Standard clinical and radiologic follow-up was performed at 6 weeks, and one and two years. Revision with removal of primary prosthesis for any reason was the primary outcome. Patient reported pre- and postoperative pain, satisfaction and general health scores were collected at one and two years. Postoperative radiographs were analyzed for radiolucent lines. RESULTS There were no cases of aseptic loosening. Survival for all reasons was 96.4% (CI 77.2%-99.5%). One progressive radiolucent line was seen. Numerical rating scale (NRS) for pain with and without weightbearing at 2-year follow-up improved from 8 to 3 and from 5 to 2 points respectively. Overall general health scores improved with a median of 70 at ≥ 2 years, compared to 63 pre-operatively. CONCLUSION With no revision for aseptic loosening the use of tibial sleeves in primary TKA seems a safe and reliable method for fixation of the tibial component in metaphyseal bone with altered bone structure at short and mid-term follow-up. LEVEL OF EVIDENCE Level IV, cohort study.
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Affiliation(s)
- P J H van Rensch
- Department of Orthopedics, Rijnstate Hospital, Wagnerlaan 55, 6815 AG Arnhem, the Netherlands; Currently Employed at CortoClinics, Beatrixstraat 31, 6031 BB, Nederweert, the Netherlands.
| | - P J C Heesterbeek
- Department of Research, Sint Maartenskliniek, PO Box 9011, 6500 GM Nijmegen, the Netherlands.
| | - C J van Loon
- Department of Orthopedics, Rijnstate Hospital, Wagnerlaan 55, 6815 AG Arnhem, the Netherlands.
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Daud A, Safir OA, Gross AE, Kuzyk PRT. Outcomes of Bulk Fresh Osteochondral Allografts for Cartilage Restoration in the Knee. J Bone Joint Surg Am 2021; 103:2115-2125. [PMID: 34449445 DOI: 10.2106/jbjs.20.00350] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Symptomatic osteochondral defects of the knee in young patients can cause substantial disability and predispose to osteoarthritis. Fresh osteochondral allografts (FOCAs) are a treatment option for such defects. With our institution having one of the longest-running FOCA programs, we investigated the long-term outcomes of bulk FOCA in the knee, focusing on graft survivorship, function, complications, and reoperation. METHODS A total of 244 patients underwent bulk FOCA in the knee from 1972 to 2018, with a mean age of 37.8 years (range, 10 to 75 years) and a mean follow-up of 9.0 years (range, 1.0 to 29.8 years). Cartilage defects were very large and uncontained, such that they were not amenable to plug transplantation. Survivorship according to Kaplan-Meier analysis was the primary outcome, and failure was defined as conversion to total knee arthroplasty, repeat allograft, graft removal, knee arthrodesis, or amputation. Functional outcome was evaluated with use of the modified Hospital for Special Surgery (mHSS) score, and radiographic evidence of osteoarthritis was classified with use of the Kellgren-Lawrence grading scale. RESULTS Graft survivorship was 86.6% at 5 years, 73.3% at 10 years, 58.1% at 15 years, 43.7% at 20 years, 31.9% at 25 years, and 22.6% at 30 years. The most common complications were pain (14.8%), malalignment (13.9%), and stiffness (5.8%). A total of 93 grafts (38.1%) failed at a mean of 11.0 years (range, 0.5 to 34.0 years). The mean mHSS score improved significantly, from 68.7 (range, 19 to 91) preoperatively to 80.3 (range, 52 to 100) at the time of the latest follow-up (p < 0.001). Preoperative mHSS score had a negative correlation with Kellgren-Lawrence grade at the time of the latest follow-up. Multivariate analysis revealed that graft location (i.e., medial-sided or multiple grafts) and increased age were significantly negatively associated with survival. Ten-year survival was >80% in patients below 50 years old, but <40% in patients >60 years old. CONCLUSIONS Bulk FOCA provided promising long-term graft survival and functional improvement in patients <50 years old. It can delay or prevent the need for total knee arthroplasty in young patients. Older patients and patients with a medial-sided graft, or multiple grafts within the same knee, had a less favorable prognosis. LEVEL OF EVIDENCE Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Anser Daud
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Oleg A Safir
- Division of Orthopaedic Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Allan E Gross
- Division of Orthopaedic Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Paul R T Kuzyk
- Division of Orthopaedic Surgery, Mount Sinai Hospital, Toronto, Ontario, Canada
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Rodriguez-Merchan EC, Kachooei AR. Is There any Difference in the Survival of Conversion TKA After Previous HTO In Compare to Previous UKA? Factors to be Considered When Offering a Surgery. THE ARCHIVES OF BONE AND JOINT SURGERY 2021; 9:368-370. [PMID: 34423082 DOI: 10.22038/abjs.2020.52131.2575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Amir R Kachooei
- Orthopedic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Rothman Institute, Thomas Jefferson University, Philadelphia, USA
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Parente A, Legnani C, Bargagliotti M, Marullo M, Romagnoli S. Medial Unicompartmental Knee Arthroplasty After Failed Open-Wedge High Tibial Osteotomy. J Arthroplasty 2021; 36:2746-2751. [PMID: 33810918 DOI: 10.1016/j.arth.2021.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/25/2021] [Accepted: 03/01/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Controversy exists whether or not a previous high tibial osteotomy (HTO) influences the outcome and survival of a unicompartmental knee arthroplasty (UKA). The aim of this retrospective study was to evaluate clinical, radiological, and functional outcomes of UKA after failed open-wedge HTO compared with UKA with no previous HTO. METHODS Between 2001 and 2017, 24 post-HTO UKAs (group A) with an average follow-up of 8.1 years (range: 5 to 13) were compared with a control group of 30 patients undergoing simple UKA (group B) with an average follow-up of 9.5 years (range: 2 to 16). All patients were evaluated preoperatively and postoperatively using Knee Society Score, University of California at Los Angeles Activity Score, Western Ontario and McMaster University Osteoarthritis Index, and through objective evaluation. Mechanical coronal alignment and Caton-Deschamps index were measured both preoperatively and postoperatively. RESULTS In both groups, Knee Society Score, University of California at Los Angeles Activity Score, and Western Ontario and McMaster University Osteoarthritis Index scores significantly improved at follow-up (P < .001). In addition, statistically significant greater improvements in clinical and functional scores were reported in group B compared with group A (P < .001). No statistically significant differences concerning postoperative mechanical axis were observed between groups (2.7° and 3.2°, respectively, P = .27) and with regard to Caton-Deschamps index (1.0° and 1.1°, respectively, P = .44). CONCLUSION This study demonstrated improvements in clinical and functional outcomes compared with preoperatory status in both groups irrespective of a previous HTO. A prior HTO was a determinant for having reduced postoperative clinical and functional outcomes after UKA.
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Affiliation(s)
- Andrea Parente
- IRCCS Istituto Ortopedico Galeazzi, Hip and Knee Arthroplasty Surgery Center, Milan, Italy
| | - Claudio Legnani
- IRCCS Istituto Ortopedico Galeazzi, Sport Traumatology and Minimally Invasive Surgery Center, Milan, Italy
| | - Marco Bargagliotti
- IRCCS Istituto Ortopedico Galeazzi, Joint Replacement Department, Milan, Italy
| | - Matteo Marullo
- IRCCS Istituto Ortopedico Galeazzi, Joint Replacement Department, Milan, Italy
| | - Sergio Romagnoli
- IRCCS Istituto Ortopedico Galeazzi, Joint Replacement Department, Milan, Italy
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