scholarly journals Association between tears of the posterior root of the medial meniscus and far posterior femoral condyle osteoarthritis

2020 ◽  
Vol 26 (4) ◽  
pp. 349-354
Author(s):  
Ronnie Sebro ◽  
◽  
S. Sharon Ashok ◽  
Matthew Uriell ◽  
◽  
...  
Keyword(s):  
Medial Meniscus ◽  
Femoral Condyle ◽  
Posterior Root ◽  
Posterior Femoral Condyle

scholarly journals Preliminary diagnosis of medial meniscus posterior root tears using the Rosenberg radiographic view

2019 ◽  
Vol 31 (1) ◽  
Author(s):  
Yuya Kodama ◽  
Takayuki Furumatsu ◽  
Yusuke Kamatsuki ◽  
Takaaki Hiranaka ◽  
Tomohiro Takahata ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Medial Meniscus ◽  
Femoral Condyle ◽  
Weight Bearing ◽  
Magnetic Resonance Images ◽  
Control Group ◽  
Posterior Root ◽  
Level Of Evidence ◽  
Group A ◽  
Group B

Abstract Purpose To verify the effectiveness of detecting medial meniscus posterior root tears (MMPRTs) using weight-bearing posterior-anterior (PA) radiographs. Materials and methods Twenty-three patients were diagnosed with an MMPRT using magnetic resonance imaging (Group A), with 23 matched individuals forming the control group (Group B). The distance between medial tibial eminence and the lateral edge of the medial femoral condyle (MTE–MFC distance) and medial joint space (MJS) width were measured on weight-bearing PA radiographs, with the knee flexed at 45° (Rosenberg view). Absolute medial meniscus extrusion (MME) was measured on magnetic resonance images. Results The MTE–MFC distance was greater and the MJS width was smaller in Group A than Group B (7.7 ± 1.7 mm versus 6.0 ± 1.24 mm and 3.2 ± 0.8 mm versus 4.5 ± 0.7 mm, respectively; P < 0.05). The MTE–MFC distance and MJS width correlated with MME (r = 0.603 and 0.579, respectively; P < 0.05), and the extent of MME was greater in Group A than Group B (4.1 ± 1.1 mm versus 1.8 ± 1.5 mm, respectively; P < 0.05). Conclusions MMPRTs increase the MTE–MFC distance and decrease the MJS width, with these measurements correlating to the MME. Therefore, measurement of the MTE–MFC distance and MJS width on the Rosenberg view could be a useful preliminary method for the diagnosis of an MMPRT. Level of evidence IV

scholarly journals Potential of the non-weight-bearing tunnel view in diagnosing medial meniscus posterior root tear: a pilot study of X-ray characteristics

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Hiroki Okamura ◽  
Hiroki Ishikawa ◽  
Takuya Ohno ◽  
Shogo Fujita ◽  
Shigeo Yamakami ◽  
...  
Keyword(s):  
Pilot Study ◽  
Medial Meniscus ◽  
Femoral Condyle ◽  
Weight Bearing ◽  
Disease Diagnosis ◽  
Posterior Root ◽  
Root Tear ◽  
X Ray ◽  
Posterior Root Tear ◽  
Significant Difference

Abstract Purpose Early detection of medial meniscus posterior root tear (MMPRT) is important in preventing the rapid onset and progression of degenerative knee disease. Diagnosis is facilitated by the availability of non-weight-bearing X-ray view, but information on the X-ray characteristics of MMPRT is scarce. Here, we conducted a pilot study of the X-ray characteristics of MMPRT on non-weight-bearing tunnel view. Methods We retrospectively reviewed 43 consecutive patients treated in the outpatient department for medial knee pain or popliteal pain. Patients were divided into MMPRT (21 knees) and non-MMPRT groups (22 knees). We investigated X-ray characteristics and magnetic resonance imaging findings. Femorotibial angle, posterior tibial slope, medial tibial eminence (MTE)–medial femoral condyle (MFC) distance (contralateral and affected sides, and difference between the two), medial tibiofemoral joint (MTFJ) width (contralateral and affected sides, and difference between the two), and meniscus radial dislocation between the groups were evaluated using the Mann–Whitney U test. The association between X-ray characteristics and MMPRT was determined using univariate and multivariate logistic regression analyses. Results A highly significant difference between the affected and contralateral sides was seen in MTFJ width and MTE–MFC distance on non-weight-bearing tunnel view between the MMPRT and non-MMPRT groups. Moreover, a difference in MTFJ width of <−0.575 mm and in MTE–MFC distance of >0.665 mm between the affected and contralateral sides was useful in predicting MMPRT. Conclusions The non-weight-bearing tunnel view is useful for the initial diagnosis of MMPRT. Prospective evaluation in a larger population is warranted.

scholarly journals Partial Meniscectomy Provides No Benefit for Symptomatic Degenerative Medial Meniscus Posterior Root Tears

2017 ◽  
Vol 5 (7_suppl6) ◽  
pp. 2325967117S0024
Author(s):  
Aaron John Krych ◽  
Nick R. Johnson ◽  
Rohith Mohan ◽  
Diane L. Dahm ◽  
Bruce A. Levy ◽  
...  
Keyword(s):  
Medial Meniscus ◽  
Partial Meniscectomy ◽  
Posterior Root

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.

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