Knee Surg Relat Res.  2015 Jun;27(2):90-94. 10.5792/ksrr.2015.27.2.90.

Clinical Evaluation of the Root Tear of the Posterior Horn of the Medial Meniscus in Total Knee Arthroplasty for Osteoarthritis

• Choi ES
• Park SJ

• KMID: 2223214
• DOI: http://doi.org/10.5792/ksrr.2015.27.2.90

Abstract

PURPOSE
To investigate the incidence of root tears of the posterior horn of the medial meniscus in total knee replacement arthroplasty for knee osteoarthritis and retrospectively analyze clinical results and factors associated with root tears.
MATERIALS AND METHODS
There were 197 knees of 140 enrolled patients who had undergone total knee replacement arthroplasty between September 2010 and May 2014. The presence of a root tear of the posterior horn of the medial meniscus was confirmed in all patients. Statistical analysis was performed to investigate the correlation between root tears and the possible factors of meniscal tears including gender, age, severity of symptoms (visual analogue scale [VAS] score and medial joint line tenderness), grade of osteoarthritis (Kellgren-Lawrence grading scale), body mass index (BMI), varus deformity, and mechanical axis deviation.
RESULTS
Meniscal tears were observed in 154 knees (78.17%). The root tear had correlation with the severity of osteoarthritis (p<0.05), varus deformity (p<0.05), mechanical axis deviation (p<0.05), and BMI (p<0.05).
CONCLUSIONS
Factors considered to represent the severity of osteoarthritis were found to be associated with root tears of the medial meniscus posterior horn. Increased BMI seemed to be associated with the increased incidence of root tears of the medial meniscus posterior horn.

Keyword

Knee; Degenerative arthritis; Medial meniscus; Root tear; Arthroplasty

MeSH Terms

Animals
Arthroplasty*
Arthroplasty, Replacement, Knee
Axis, Cervical Vertebra
Body Mass Index
Congenital Abnormalities
Horns*
Humans
Incidence
Joints
Knee*
Menisci, Tibial*
Osteoarthritis*
Osteoarthritis, Knee
Retrospective Studies