scholarly journals Postoperative clinical outcomes of unicompartmental knee arthroplasty in patients with isolated medial compartmental osteoarthritis following medial meniscus posterior root tear

2021 ◽  
Vol 26 ◽  
pp. 15-20
Author(s):  
Takaaki Hiranaka ◽  
Takayuki Furumatsu ◽  
Yuki Okazaki ◽  
Takaaki Tanaka ◽  
Masatsugu Ozawa ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Meniscus ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Unicompartmental Knee

scholarly journals A Retrospective Review of Unicompartmental Knee Arthroplasty Functional Outcome and the Incidence of Medial Meniscus Posterior Root Tear in Spontaneous Osteonecrosis of the Knee

2020 ◽  
Author(s):  
PO-JU WU ◽  
TsungYu Lin ◽  
Yung Chang Lu
Keyword(s):  
Effective Treatment ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Meniscus ◽  
Functional Improvement ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis

Abstract Background:Spontaneous osteonecrosis of the knee (SONK) can lead to severe knee osteoarthritis predominantly localized to the medial compartment. We aimed to determine whether unicompartmental knee arthroplasty was an effective treatment for primary SONK.Methods:We analyzed the functional outcomes in 23 patients with SONK (with a magnetic resonance imaging [MRI]-confirmed diagnosis) who underwent UKA at a single center. The mean follow-up time was 67 months post-UKA.Results:Significant improvements in function were indicated by reduced Oxford Knee and Visual Analogue Scale scores after UKA, and there were no specific complications after the procedures. The incidence of MRI-identified medial meniscus posterior root tear (MMPRT) was 69.6% (16/23).Conclusion:Unicompartmental arthroplasty for SONK is less destructive to the native knee structure than total knee arthroplasty, but can achieve comparable prognosis with strict patient selection. While the precise etiology of SONK is unknown, one theory posits that a MMPRT may change the biomechanical circumstances of the knee joint, leading to osteonecrosis. Although not confirmatory, the high prevalence rate suggests that MMPRT may have a key role in the development of SONK. UKA is an effective treatment option for SONK, resulting in significant functional improvement. Long-term (>10 years) outcomes should be investigated.

scholarly journals A Retrospective Review of Unicompartmental Knee Arthroplasty Functional Outcome and the Incidence of Medial Meniscus Posterior Root Tear in Spontaneous Osteonecrosis of the Knee

2020 ◽  
Author(s):  
PO-JU WU ◽  
TsungYu Lin ◽  
Yung Chang Lu
Keyword(s):  
Effective Treatment ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Meniscus ◽  
Functional Improvement ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis

Abstract Background: Spontaneous osteonecrosis of the knee (SONK) can lead to severe knee osteoarthritis predominantly localized to the medial compartment. We aimed to determine whether unicompartmental knee arthroplasty was an effective treatment for primary SONK.Methods: We analyzed the functional outcomes in 23 patients with SONK (with a magnetic resonance imaging [MRI]-confirmed diagnosis) who underwent UKA at a single center. The mean follow-up time was 67 months post-UKA.Results: Significant improvements in function were indicated by reduced Oxford Knee and Visual Analogue Scale scores after UKA, and there were no specific complications after the procedures. The incidence of MRI-identified medial meniscus posterior root tear (MMPRT) was 69.6% (16/23). Conclusion: Unicompartmental arthroplasty for SONK is less destructive to the native knee structure than total knee arthroplasty, but can achieve comparable prognosis with strict patient selection. While the precise etiology of SONK is unknown, one theory posits that a MMPRT may change the biomechanical circumstances of the knee joint, leading to osteonecrosis. Although not confirmatory, the high prevalence rate suggests that MMPRT may have a key role in the development of SONK. UKA is an effective treatment option for SONK, resulting in significant functional improvement. Long-term (>10 years) outcomes should be investigated.

scholarly journals A retrospective chart review of unicompartmental knee arthroplasty functional outcome and the incidence of medial meniscus posterior root tear in spontaneous osteonecrosis of the knee

2020 ◽  
Author(s):  
PO-JU WU ◽  
TsungYu Lin ◽  
YungChang Lu
Keyword(s):  
Effective Treatment ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Meniscus ◽  
Functional Improvement ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis

Abstract Background : Spontaneous osteonecrosis of the knee (SONK) can lead to severe knee osteoarthritis predominantly localized to the medial compartment. We aimed to determine whether unicompartmental knee arthroplasty was an effective treatment for primary SONK. Methods: We analyzed the functional outcomes in 23 patients with SONK (with a magnetic resonance imaging [MRI]-confirmed diagnosis) who underwent UKA at a single center. The mean follow-up time was 67 months post-UKA. Results: Significant improvements in function were indicated by reduced Oxford Knee and Visual Analogue Scale scores after UKA, and there were no specific complications after the procedures. The incidence of MRI-identified medial meniscus posterior root tear (MMPRT) was 69.6% (16/23). Conclusion: Unicompartment arthroplasty for SONK is less destructive to the native knee structure than total knee arthroplasty, but can achieve comparable prognosis with strict patient selection.While the precise etiology of SONK is unknown, one theory posits that a MMPRT may change the biomechanical circumstances of the knee joint, leading to osteonecrosis. Although not confirmatory, the high prevalence rate suggests that MMPRT may have a key role in the development of SONK. UKA is an effective treatment option for SONK, resulting in significant functional improvement. Long-term (>10 years) outcomes should be investigated.

scholarly journals A Retrospective Study of Unicompartmental Knee Arthroplasty Functional Outcome and the Incidence of Medial Meniscus Posterior Root Tear in Spontaneous Osteonecrosis of the Knee

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Po-Ju Wu ◽  
Tsung Yu Lin ◽  
Yung Chang Lu
Keyword(s):  
Effective Treatment ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Meniscus ◽  
Functional Improvement ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis

Background. Spontaneous osteonecrosis of the knee (SONK) can lead to severe knee osteoarthritis predominantly localized to the medial compartment. We aimed to determine whether unicompartmental knee arthroplasty was an effective treatment for primary SONK. Methods. We analyzed the functional outcomes in 23 patients with SONK (with a magnetic resonance imaging- (MRI-) confirmed diagnosis) who underwent UKA at a single center. The mean follow-up time was 67 months post-UKA. Results. Significant improvements in function were indicated by reduced Oxford Knee and Visual Analogue Scale scores after UKA, and there were no specific complications after the procedures. The incidence of MRI-identified medial meniscus posterior root tear (MMPRT) was 69.6% (16/23). Conclusion. Unicompartmental arthroplasty for SONK is less destructive to the native knee structure than total knee arthroplasty but can achieve comparable prognosis with strict patient selection. While the precise etiology of SONK is unknown, one theory posits that a MMPRT may change the biomechanical circumstances of the knee joint, leading to osteonecrosis. Although not confirmatory, the high prevalence rate suggests that MMPRT may have a key role in the development of SONK. UKA is an effective treatment option for SONK, resulting in significant functional improvement. Long-term (>10 years) outcomes should be investigated.

scholarly journals A Retrospective Review of Unicompartmental Knee Arthroplasty Functional Outcome and the Incidence of Medial Meniscus Posterior Root Tear in Spontaneous Osteonecrosis of the Knee

2020 ◽  
Author(s):  
PO-JU WU ◽  
TsungYu Lin ◽  
Yung Chang Lu
Keyword(s):  
Effective Treatment ◽  
Knee Arthroplasty ◽  
Unicompartmental Knee Arthroplasty ◽  
Medial Meniscus ◽  
Functional Improvement ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Unicompartmental Knee ◽  
Spontaneous Osteonecrosis

Abstract Background:Spontaneous osteonecrosis of the knee (SONK) can lead to severe knee osteoarthritis predominantly localized to the medial compartment. We aimed to determine whether unicompartmental knee arthroplasty was an effective treatment for primary SONK.Methods: We analyzed the functional outcomes in 23 patients with SONK (with a magnetic resonance imaging [MRI]-confirmed diagnosis) who underwent UKA at a single center. The mean follow-up time was 67 months post-UKA.Results: Significant improvements in function were indicated by reduced Oxford Knee and Visual Analogue Scale scores after UKA, and there were no specific complications after the procedures. The incidence of MRI-identified medial meniscus posterior root tear (MMPRT) was 69.6% (16/23).Conclusion: Unicompartmental arthroplasty for SONK is less destructive to the native knee structure than total knee arthroplasty, but can achieve comparable prognosis with strict patient selection. While the precise etiology of SONK is unknown, one theory posits that a MMPRT may change the biomechanical circumstances of the knee joint, leading to osteonecrosis. Although not confirmatory, the high prevalence rate suggests that MMPRT may have a key role in the development of SONK. UKA is an effective treatment option for SONK, resulting in significant functional improvement. Long-term (>10 years) outcomes should be investigated.

scholarly journals Does meniscectomy have any advantage over conservative treatment in middle-aged patients with degenerative medial meniscus posterior root tear?

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Nam-Hun Lee ◽  
Hyoung-Yeon Seo ◽  
Myung-Jin Sung ◽  
Bo-Ram Na ◽  
Eun-Kyoo Song ◽  
...  
Keyword(s):  
Conservative Treatment ◽  
Clinical Outcomes ◽  
Medial Meniscus ◽  
Joint Space ◽  
Posterior Root ◽  
Root Tear ◽  
Aged Patients ◽  
Posterior Root Tear ◽  
Arthroscopic Meniscectomy

Abstract Background The best treatment for degenerative medial meniscus posterior root tear (MMPRT) remains controversial. This study aimed to compare the clinical and radiological outcomes of arthroscopic meniscectomy and conservative treatment for degenerative MMPRT. Methods From January 2007 to December 2014, 146 patients (Meniscectomy group, 90; Conservative group, 56) were evaluated. Clinical outcomes were assessed using the Visual Analog Scale, International Knee Documentation Committee subjective scoring scale, Tegner activity scale, and Lysholm knee scoring scale at the final follow-up. Radiologic outcomes evaluated the progression of osteoarthritis (OA) according to the Kellgren-Lawrence (K-L) classification. We compared the hip-knee-ankle angle (HKAA), medial proximal tibial angle, tibial posterior slope angle, and width of medial joint space. After an average follow-up of 6.3 years, the survivorship was analyzed using the Kaplan–Meier method. Results All clinical outcomes were significantly improved in both groups after treatment, with no significant differences between the two groups at the final follow-up. The progression of OA according to the K-L classification, HKAA and width of medial joint space was significantly advanced in the meniscectomy group (p = 0.03, 0.04, 0.03, respectively). The 10-year survival rates in the meniscectomy and conservative groups were 87 and 88%, respectively. Conclusions This study demonstrated that both conservative treatment and meniscectomy provided symptomatic relief. However, it was confirmed that OA progression was more severe in the meniscectomy. We conclude that arthroscopic meniscectomy had no advantage over conservative treatment in terms of clinical outcomes and OA progression in middle-aged patients with MMPRT. Level of evidence Level III; retrospective comparative study.

One-year clinical outcomes of pullout suture repair of medial meniscus posterior root tear using a knotless anchor and a modified Mason-Allen stitch

2014 ◽  
Vol 1 (1) ◽  
pp. 31-39
Author(s):  
Young-Jin Seo ◽  
Yon-Sik Yoo ◽  
Si Young Song ◽  
In Sung Kim ◽  
Chan Hyeok Kim ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Medial Meniscus ◽  
Suture Repair ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Knotless Anchor ◽  
One Year

scholarly journals Comparison of the clinical outcomes of transtibial pull-out repair for medial meniscus posterior root tear: Two simple stitches versus modified Mason-Allen suture

The Knee ◽  
2020 ◽  
Vol 27 (3) ◽  
pp. 701-708 ◽  
Author(s):  
Takaaki Hiranaka ◽  
Takayuki Furumatsu ◽  
Shinichi Miyazawa ◽  
Yoshiki Okazaki ◽  
Yuki Okazaki ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Medial Meniscus ◽  
Posterior Root ◽  
Root Tear ◽  
Posterior Root Tear ◽  
Pull Out
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