Medial Meniscal Tears in Anterior Cruciate Ligament-Deficient Knees: Effects of Posterior Tibial Slope on Medial Meniscal Tear
- Author:
Jae Jeong LEE
1
;
Yun Jin CHOI
;
Keun Young SHIN
;
Chong Hyuk CHOI
Author Information
1. Department of Orthopedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea. choi8422@yuhs.ac
- Publication Type:Original Article
- Keywords:
Chronic anterior cruciate ligament deficient knee;
Medial meniscal tear;
Posterior tibial slope
- MeSH:
Anterior Cruciate Ligament;
Humans;
Incidence;
Knee;
Menisci, Tibial;
Risk Factors
- From:The Journal of Korean Knee Society
2011;23(4):227-230
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To evaluate the incidence of meniscal tears in patients with chronic anterior cruciate ligament (ACL)-deficient knees, and to determine the influence of posterior tibial slope (PTS) on medial meniscal tears in ACL-deficient knees. MATERIALS AND METHODS: We reviewed 174 patients (174 knees) with a mean age of 30.7 years who underwent ACL reconstruction for chronic ACL tears. We divided the patients into two groups: low group (135 knees with a PTS<13degrees) and high group (39 knees with a PTS> or =13degrees). RESULTS: The incidence of medial meniscus tears was 44% (77/174), and that of lateral meniscus tears was 35% (61/174). The mean PTS in patients with medial meniscal tears was 11.4degrees+/-3.0degrees, whereas that in patients without medial meniscal tears was 9.8degrees+/-2.4degrees. The incidence of meniscal tears was 57.8% (78/135) in the low group and 89.7% (35/39) in the high group (p<0.001). CONCLUSIONS: Our data demonstrate that PTS> or =13degrees is a risk factor for secondary medial meniscal tears in ACL-deficient knees. So, we suggest that PTS is one of the considerations for determining early ACL reconstruction to prevent secondary meniscal tears.
