Abstract:
BACKGROUND:The relationship between medial meniscus tear and posterior cruciate ligament (PCL) injury has not been exactly explained. We studied to investigate the biomechanical effect of partial and complete PCL transection on different parts of medial meniscus at different flexion angles under static loading conditions. MATERIALS AND METHODS:TWELVE FRESH HUMAN CADAVERIC KNEE SPECIMENS WERE DIVIDED INTO FOUR GROUPS: PCL intact (PCL-I), anterolateral bundle transection (ALB-T), posteromedial bundle transection (PMB-T) and PCL complete transection (PCL-T) group. Strain on the anterior horn, body part and posterior horn of medial meniscus were measured under different axial compressive tibial loads (200-800 N) at 0°, 30°, 60° and 90° knee flexion in each groups respectively. RESULTS:Compared with the PCL-I group, the PCL-T group had a higher strain on whole medial meniscus at 30°, 60° and 90° flexion in all loading conditions and at 0° flexion with 400, 600 and 800 N loads. In ALB-T group, strain on whole meniscus increased at 30°, 60° and 90° flexion under all loading conditions and at 0° flexion with 800 N only. PMB-T exihibited higher strain at 0° flexion with 400 N, 600 N and 800 N, while at 30° and 60° flexion with 800 N and at 90° flexion under all loading conditions. CONCLUSIONS:Partial PCL transection triggers strain concentration on medial meniscus and the effect is more pronounced with higher loading conditions at higher flexion angles.
journal_name
Indian J Orthopjournal_title
Indian journal of orthopaedicsauthors
Gao SG,Zhang C,Zhao RB,Liao Z,Li YS,Yu F,Zeng C,Luo W,Li KH,Lei GHdoi
10.4103/0019-5413.118206subject
Has Abstractpub_date
2013-09-01 00:00:00pages
493-9issue
5eissn
0019-5413issn
1998-3727pii
IJOrtho-47-493journal_volume
47pub_type
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