Injury to the ligaments of the knee in young children is relatively rare due to the resiliency of the ligaments and the relative weakness of the physis. Epiphyseal injury therefore is more apt to occur. The most common injury that occurs when the cruciate ligaments in children are stressed is avulsion of the anterior tibial spine, and this isolated injury usually does not result in significant laxity of the ligaments after healing. Acute insufficiency of the posterior cruciate ligament has been recognized in adults and has recently been reported in a child. We saw two young children with an avulsion of the posterior cruciate ligament that apparently occurred after hyperextension of the knee. In our experience, when hyperextension injury produces insufficiency of the posterior cruciate ligament, the ligament is avulsed from its femoral attachment together with a chondral fragment.
ASJC Scopus subject areas
- Orthopedics and Sports Medicine