Medium-term clinical results of unicompartmental knee arthroplasty for the treatment for spontaneous osteonecrosis of the knee with four to 15 years of follow-up

The Knee ◽  
2019 ◽  
Vol 26 (5) ◽  
pp. 1111-1116 ◽  
Author(s):  
Shinichi Fukuoka ◽  
Kenji Fukunaga ◽  
Kei Taniura ◽  
Takeharu Sasaki ◽  
Kunio Takaoka
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Clinical Results ◽  
Medium Term ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis

scholarly journals Cemented versus Uncemented Oxford Unicompartmental Knee Arthroplasty: Is There a Difference?

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Burak Akan ◽  
Dogac Karaguven ◽  
Berk Guclu ◽  
Tugrul Yildirim ◽  
Alper Kaya ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Survival Rates ◽  
Operation Time ◽  
Clinical Results ◽  
Knee Prostheses ◽  
Unicompartmental Knee ◽  
The Cost ◽  
Oxford Unicompartmental Knee Arthroplasty

Purpose. The use of uncemented unicompartmental knee prostheses has recently increased. However, few studies on the outcomes of uncemented unicompartmental knee prostheses have been performed. The purpose of this study was to compare the outcomes of cemented and uncemented Oxford unicompartmental knee arthroplasty.Materials and Methods. This retrospective observational study evaluated the clinical and radiological outcomes of 263 medial Oxford unicompartmental prostheses (141 cemented, 122 uncemented) implanted in 235 patients. The mean follow-up was 42 months in the cemented group and 30 months in the uncemented group.Results. At the last follow-up, there were no significant differences in the clinical results or survival rates between the two groups. However, the operation time in the uncemented unicompartmental knee arthroplasty group was shorter than that in the cemented unicompartmental knee arthroplasty group. In addition, the cost of uncemented arthroplasty was greater.Conclusion. Despite the successful midterm results in the uncemented unicompartmental knee arthroplasty group, a longer follow-up period is required to determine the best fixation mode.

scholarly journals Unicompartmental knee arthroplasty for spontaneous osteonecrosis of the knee: A meta-analysis

2018 ◽  
Vol 26 (2) ◽  
pp. 230949901877092 ◽  
Author(s):  
Julio J Jauregui ◽  
Christopher L Blum ◽  
Neil Sardesai ◽  
Craig Bennett ◽  
R Frank Henn ◽  
...  
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Functional Outcomes ◽  
Meta Analysis ◽  
Standard Of Care ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis ◽  
Boolean Search ◽  
Total Knee

Background: Spontaneous osteonecrosis of the knee (SONK) is a poorly understood but debilitating disease entity. Total knee arthroplasty (TKA) is the standard of care for those patients who fail conservative management, but considering SONK’s predilection for affecting a single knee compartment, unicompartmental knee arthroplasty (UKA) appears to be a more tailored option. Unfortunately, conflicting data exist on the utility of UKA in SONK. Thus, the purpose of this study was to evaluate functional outcomes and revision rates of UKA in the setting of SONK. Methods: A systematic literature search was performed to evaluate all studies examining patients who underwent UKA for SONK. Screening of the articles was performed using multiple Boolean search strings, methodological index for non-randomized studies criteria, and other selected exclusion criteria. Results: Seven studies were included, with a total of 276 knees (273 patients). The mean age was 68 years (64–74 years), with a mean body mass index of 26 kg/m2 (25–29 kg/m2). The final range of motion was 125° (124–126°). Standardized mean difference (SMD) of clinical improvement pre- and post-outcome was 3.39 ( p < 0.001). The improvement in the visual analog score was 57.03 points, with an SMD of 4.57 ( p < 0.001). Revision rates were determined to be 5.51% (95% confidence interval of 1.96–10.69%). Conclusion: Our meta-analysis demonstrated that in properly selected patients, UKA could be an excellent alternative to TKA for patients with SONK. These data show that UKA has few complications, significant improvements on functional outcomes, and good survivorship at a mean follow-up of 6 years.

scholarly journals The Survivorship and Clinical Results of Minimally Invasive Unicompartmental Knee Arthroplasty at 10-Year Follow-up

2015 ◽  
Vol 7 (2) ◽  
pp. 199 ◽  
Author(s):  
Kyung Tae Kim ◽  
Song Lee ◽  
Jee Hyoung Kim ◽  
Sung Won Hong ◽  
Woo Shik Jung ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Clinical Results ◽  
Unicompartmental Knee

scholarly journals Unicompartmental knee arthroplasty for spontaneous osteonecrosis

2017 ◽  
Vol 25 (1) ◽  
pp. 230949901769032 ◽  
Author(s):  
Tong Ma ◽  
Yihui Tu ◽  
Huaming Xue ◽  
Tao Wen ◽  
Jiong Mei
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Lateral Compartment ◽  
Phase Iii ◽  
Complication Rates ◽  
Effective Treatment Option ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis ◽  
The Mean

Background: Unicompartmental knee arthroplasty (UKA) is an effective treatment option for medial compartment osteoarthritis (OA) of the knee. Whether spontaneous osteonecrosis of the knee (SPONK) can be successfully treated with UKA remains controversial. This study evaluated the clinical and radiological results of patients with SPONK who were treated by UKA using Oxford phase III prostheses. Methods: We compared a prospective series of 23 UKA cases operated for SPONK with 235 UKA cases operated for OA. All patients underwent Magnetic Resonance Imaging (MRI) to confirm the diagnosis and exclude any major lesion in the lateral compartment. The stage, condylar ratio, and volume of the necrotic lesion were evaluated. The pre and postoperative Oxford knee scores (OKSs) were compared. Results: The mean follow-up was 60 months. No statistical differences in complication rates between the groups were found. The mean OKS improved from 39.48 ± 5.69 to 18.83 ± 3.82 ( p < 0.05). There were no significant differences in the pre and postoperative OKS between the different groups. Conclusion: SPONK can be successfully treated with UKA, with a favorable short- to mid-term follow-up.

scholarly journals Clinical Efficacy of Unicompartmental Knee Arthroplasty in the Treatment of Spontaneous Osteonecrosis of the Knee

2020 ◽  
Author(s):  
Hao Li ◽  
Ting ting Liu ◽  
Min Zhang
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Stage Iv ◽  
Knee Joints ◽  
Short Term ◽  
Vas Score ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis ◽  
Before And After

Abstract BackgroundThis retrospective study aimed to evaluate the short-term effectiveness of unicompartmental knee arthroplasty (UKA) in the treatment of spontaneous osteonecrosis of the knee (SONK).MethodsThe patients who were diagnosed as SONK and received UKA in our hospital from January 2012 to January 2018 were retrospectively analyzed. The patients were diagnosed and staged by X-ray and MRI techniques before surgery. The range of motion (ROM), femorotibial angle (FTA), and visual analog scale (VAS) score of patients' knee joints were assessed before and after surgery. Clinical outcomes were evaluated by the hospital for special surgery (HSS) knee score.ResultsA total of 18 patients with spontaneous osteonecrosis (4 males and 14 females; mean age: 62.5 years) met the inclusion criteria participated in this study. According to the Mont grades, 12 cases (66.7%) were in stage III, and 6 cases (33.3%) were in stage IV. The average follow-up was 19.6 months. At the last follow-up, it was found that the hospital for HSS score was increased from 61.22 ± 2.90 to 91.0 ± 2.89 (P < 0.05); VAS score was decreased from 6.44 ± 1.04 to 1.94 ± 0.99 (P < 0.05); FTA was improved from 178.42 ± 0.84 to 176.17 ± 0.87 (P < 0.05); ROM (120.17 ± 5.88) was not significantly different from that before surgery (119.61 ± 5.56, P = 0.601).ConclusionThe encouraging results of this study indicate that UKA has an excellent short-term clinical effect in the treatment of SONK.

scholarly journals Good mid- to long-term results of the cemented oxford phase 3 unicompartmental knee arthroplasty in a non-designer centre

2021 ◽  
Author(s):  
D. M. Moore ◽  
G. A. Sheridan ◽  
A. Welch-Phillips ◽  
J. M. O’Byrne ◽  
P. Kenny
Keyword(s):  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Womac Score ◽  
Long Term Results ◽  
Secondary Outcome ◽  
Osteoarthritis Of The Knee ◽  
Phase 3 ◽  
Unicompartmental Knee ◽  
Aseptic Revision

Abstract Purpose Unicompartmental knee arthroplasty (UKA) provides patients with an alternative treatment to TKA in isolated medial compartment osteoarthritis providing better functional outcomes and faster recovery in the short term. Our aim was to quantify revision rates, predictors of revision, mortality rate and functionality of the Oxford Phase 3 UKA in a non-designer institution. Methods This was a retrospective review of prospectively collected regional registry data. All Oxford Phase 3 UKAs performed for medial tibio-femoral osteoarthritis of the knee joint were included from a single academic institution between the period of January 1st 2006 and December 30th 2009. Kaplan-Meier survivorship curves adjusting for loss to follow-up and deceased patients were generated. Primary outcome variables included all-cause and aseptic revision. Secondary outcome variables included functional outcome scores. Patients were reviewed at 6 months, 2 years, 5 years, 10 years and 15 years. Results A total of 64 cemented Oxford phase 3 UKAs were performed between January 2006 and November 2009. Fifteen-year follow-up data were available for 51 patients, of these 12 required revision. Survival rates, adjusting for patients that were either lost to follow-up or deceased, were 87.5% at 5 years, 81.4% at 10 years and 76.4% at 15 years. The overall aseptic revision rate at the time of review was 18.75% (n = 12). The only significant predictor of postoperative WOMAC score at 15 years was the preoperative WOMAC score (p = 0.03). Conclusion The Oxford Phase 3 UKA for medial tibio-femoral arthritis has promising outcomes at 15-year follow-up with a survival rate of 76.4% in a non-designer centre. Level of Evidence III.

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