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KMID : 0828620120160020114
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Journal of Korean Arthroscopy Society
2012 Volume.16 No. 2 p.114 ~ p.120
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Effect of Release of the Superficial Medial Collateral Ligament in Repair of the Posterior Medial Meniscus Root Tear
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Yang Byung-Se
Lee Dhong-Won
Nam Sang-Wook
Ha Jeong-Ku
Kim Jin-Goo
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Abstract
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Purpose: The purpose of the study was to evaluate the usefulness and the stability of the superficial medial collateral ligament (MCL) release in posterior medial meniscus root repair. Materials and Methods: We compared 20 patients who underwent posterior medial meniscus root repair with superficial MCL preserved (PM) and 32 patients who underwent posterior medial meniscus root repair combined with superficial MCL release (RM) from April 2006 to September 2010. We excluded the patients combined with other surgery. To evaluate the postoperative valgus instability in RM group, we examined direct tenderness on MCL insertion, the subjective feeling of instability and valgus stress test at 3 months and 1 year follow-up. We compared the tourniquet time between PM group and RM group, and the clinical results were assessed by Lysholm score and International Knee Documentation Committee (IKDC) for the usefulness. Results: All patients had no clinically significant complication related to the superficial MCL release. Three months and 1 year follow-up, there were no positive tenderness test, no subjective symptoms and no significant increase of valgus instability although 5 patients examined grade I valgus instability. The mean tourniquet time was minutes in RM group and minutes in PM group. There was a significant difference in the tourniquet time between the two groups (P<0.05). Average Lysholm score was (range, 44-70) preoperatively and (range, 77-94) postoperatively in PM group, and was (range, 45-67) preoperatively and (range, 82-95) postoperatively in RM group (P<0.001). No significant difference of Lysholm score was found in both groups (P<0.05). Average IKDC scores was (range, 30-53) preoperatively and (range, 68-92) postoperatively in PM group, and was (range, 30-53) preoperatively and (range, 84-95) postoperatively in RM group (P<0.05). There was also no significant difference of IKDC score in both groups (P<0.05). Conclusion: The superficial MCL release in posterior medial meniscus root repair is useful to gain a wide surgical field and reduces the tourniquet time and does not lead to postoperative valgus instability. It can be considered clinically useful and safe procedure in medial meniscus posterior root repair.
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KEYWORD
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Medial collateral ligament, Medial collateral ligament release, Medial meniscus root repair
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