Degenerative medial meniscus tear with a displaced flap into the meniscotibial recess and tibial peripheral reactive bone edema presents good results with arthroscopic surgical treatment

Author(s):  
Camilo Partezani Helito ◽  
Paulo Victor Partezani Helito ◽  
Marcel Faraco Sobrado ◽  
Pedro Nogueira Giglio ◽  
Tales Mollica Guimaraes ◽  
...  
2021 ◽  
Vol 9 (7_suppl3) ◽  
pp. 2325967121S0005
Author(s):  
Matthew D. Milewski ◽  
Ryan P. Coene ◽  
Kelly H. McFarlane ◽  
Kathryn A. Williams ◽  
Lanna Feldman ◽  
...  

Background: Discoid meniscus, a congenital meniscus variant, may have greater incidence in Asian populations. No United States population-based studies have examined the discoid meniscus ethnic/racial distribution. Hypothesis/Purpose: In pediatric patients undergoing meniscus surgery, we hypothesize that ethnic/racial variability exists in patients with discoid meniscus and this variability is different than in patients with isolated medial meniscus tears. Methods: The Pediatric Health Information System (PHIS) was queried from 48 hospitals to examine patients 18 years of age and younger between 2015 and 2019, using ICD-10 codes. A cohort of patients treated surgically for discoid meniscus was compared to a cohort of patients treated surgically for medial meniscal tear. These two populations were compared based on age, gender, ethnicity/race, CPT® code, insurance, urban vs rural, and region of country. Univariate testing and multivariable logistic modeling were used to test for associations. Results: A discoid meniscus cohort of 399 children (median age, 13.0 years) was compared to a medial meniscus tear cohort of 3157 children (median age, 16.0 years) (p<0.001) (Table 1). Hispanic/Latino children accounted for 36.8% of the discoid meniscus and 22.7% of the medial meniscus populations (p<0.001). Among pediatric patients that had surgery for discoid meniscus or medial meniscus, Hispanic/Latino children had 2.4 times the odds of surgery for discoid meniscus compared to white patients after adjusting for age and insurance (p<0.001) (Table 2). Asian children also had 2.4 times the odds of surgery for discoid meniscus compared to white patients (p=0.017). Conclusion: This study shows a significant association of ethnicity/race with discoid versus medial meniscus surgical treatment in children. Among pediatric patients that had surgery for discoid or medial meniscus, Hispanic/Latino and Asian patients were significantly more likely to have surgery for discoid meniscus than white patients. Hispanic/Latino children made up a greater percentage of the population having surgery for a discoid meniscus versus medial meniscus. When evaluating pediatric patients, younger age and Asian or Hispanic/Latino ethnicity should increase attention to the possibility of a discoid meniscus. [Table: see text][Table: see text]


2020 ◽  
Vol 28 ◽  
pp. S294-S295
Author(s):  
H. Kaneko ◽  
M. Ishijima ◽  
T. Aoki ◽  
Y. Negishi ◽  
L. Liu ◽  
...  

2019 ◽  
Vol 28 (11) ◽  
pp. 3497-3503 ◽  
Author(s):  
Jae-Young Kim ◽  
Seong-Il Bin ◽  
Jong-Min Kim ◽  
Bum-Sik Lee ◽  
Sung-Mok Oh ◽  
...  

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Hongshi Huang ◽  
Wei Yin ◽  
Shuang Ren ◽  
Yuanyuan Yu ◽  
Si Zhang ◽  
...  

Background. The abnormal knee joint motion patterns caused by anterior cruciate ligament (ACL) deficiency are thought to be associated with articular cartilage degeneration. High rates of meniscus tear combined with ACL rupture are observed, and these knees suffer a higher risk of early cartilage degeneration. Research Question. This study investigated lower limb muscular force patterns of ACL-deficient knees with a concomitant medial meniscus tear. Methods. 12 volunteers and 22 patients were recruited, including 12 patients with isolated ACL deficiency (ACLD) and 10 ACL-deficient patients with a concomitant medial meniscus tear (ACLDM). Level walking data at a self-selected speed were collected before surgery. Then, a musculoskeletal dynamic analysis system, AnyBody, was applied to simulate tibiofemoral flexion moments and muscle forces. Results. Our results indicate that the tibiofemoral peak flexion and extension moments in ACLDM patients are significantly lower than in controls. The rectus femoris force in ACLDM patients was significantly lower than in isolated ACL-deficient patients and the controls during mid and terminal stance phase, while no significant difference was found in hamstring and vastus force. Additionally, the gastrocnemius force in ACL-deficient patients both with and without a medial meniscus tear was lower than in controls during mid-stance phase. Significance. The ACLDM patients had lower peak tibiofemoral flexion moment, lower gastrocnemius force in mid-stance phase, and lower rectus femoris force during the mid and terminal stance phase. These results may help clinicians to better understand the muscle function and gait pattern in ACL-deficient patients with a concomitant medial meniscus tear.


Author(s):  
Alberto Grassi ◽  
Giacomo Dal Fabbro ◽  
Stefano Di Paolo ◽  
Federico Stefanelli ◽  
Luca Macchiarola ◽  
...  

ImportanceMeniscal tears are frequently associated with anterior cruciate ligament (ACL) injury and the correct management of this kind of lesion during ACL-reconstruction procedure is critical for the restoration of knee kinematics. Although the importance of meniscus in knee biomechanics is generally accepted, the influence of medial and lateral meniscus in stability of ACL-deficient knee is still unclear.ObjectiveThe aim of this study was to review literature, which analysed effects in cadaveric specimens of meniscal tear and meniscectomy of medial and lateral meniscus on laxity in the ACL-deficient knee.Evidence reviewAuthors performed a systematic search for cadaveric studies analysing the effect of medial and lateral meniscus tears or resection on kinematics of ACL-deficient knee. Extracted data included year of publications, number of human cadaver knee specimens, description of apparatus testing and instrumented kinematic evaluation, testing protocol and results.FindingsAuthors identified 18 studies that met inclusion and exclusion criteria of current review. The major finding of the review was that the works included reported a difference role of medial and lateral meniscus in restraining ACL-deficient knee laxity. Medial meniscus tear or resection resulted in a significant increase of anterior tibial displacement. Lateral meniscus lesions or meniscectomy on the other hand significantly increased rotation and translation under a coupled valgus stress and internal-rotation torque/pivot shift test.ConclusionsMedial and lateral meniscus have a different role in stabilising the ACL-deficient knee: while the medial meniscus functions as a critical secondary stabilisers of anterior tibial translation under an anterior/posterior load, lateral meniscus appears to be a more important restraint of rotational and dynamic laxity.Level of evidenceLevel IV, systematic review of level I–IV studies.


2012 ◽  
Vol 21 (4) ◽  
pp. 359-360 ◽  
Author(s):  
Onder Kalenderer ◽  
Mehmet Aykut Türken ◽  
Haluk Agus

2016 ◽  
Vol 70 (2) ◽  
pp. 82-87
Author(s):  
Tanja Petrovska ◽  
Antoni Novotni

Abstract Introduction. The aim of the study was to analyze effusion, bone edema, joint/articular cartilage, menisci and ligaments in correlation with pain intensity, sport activity and BMI. Methods. In our prospective study, 261 knee MRIs of patients with acute knee trauma were analyzed, who had a negative x-ray of the knee for fracture, and pain lasting for 1 month despite conservative therapy. Results. Gender distribution: 65.1% male and 34.87% female patients. Majority of subjects had body mass index from 18.5-24.9 (41.76%) The presence of an edema in the medial condyle of the femur was detected in 12.64% of patients. The most common lesion was lesion on the cartilage of the medial condyle on the femur (33.72%). We found lesions of the ACL in 40% of the cases. All patients with a combined trauma to the anterior cruciate ligament and the posterior horn of the medial meniscus had also a bone edema type 1 and type 2. Conclusion. Age and body weight do not have an impact on the cause of trauma and the type and grade of the knee lesions. Athletes and not athletes have signifycantly different causes of trauma to the knee. Patients with lesions in the posterior horn of the medial meniscus grade 3 had significantly more bone edemas (p=0.013). Localization of the pain is not linked to the cause of injury, but it depends on the developed lesions on the knee.


2001 ◽  
Vol 33 (5) ◽  
pp. S234
Author(s):  
C J Veneziano ◽  
R M Selby

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