Snapping Knee due to Impingement between Atypical Wrisberg Ligament and Expanded Anterior Cruciate Ligament - Report of One Case -

비전형적 리스버그인대와 비후된 전방십자인대의 충돌에 의한 탄발음 -1례 보고-

Discoid lateral menisci were common morphological anomaly and several classifications were proposed. Watanabe et al classified all discoid menisci, as seen arthroscopically, into three types 1) complete 2) incomplete and 3) Wrisberg ligament type. The purpose of this study is to report a rare case of both painful snapping knee joints in 6 year-old female. On arthroscopic examination, complete lateral discoid meniscus which consisted of taut Wrisberg ligament and intact tibial insertion of posterior horn was found, and abnormal anterior cruciate ligament(ACL) which has expanded femoral origin over the posterior articular surface of lateral femoral condyle was also found. At the time of arthroscopic surgery, hypertrophied high-riding Wrisberg ligament was resected, and expanded femoral origin of the anterior cruciate ligament was partially resected nearly to normal margin, and discoid lateral meniscus was saucerized. After these procedures, abnormal snapping sound was disappeared in full range of motion. On the follow-up examination after 1 year, pain and snapping sound were disappeared and any instability and limping were not found.

저자들은 관절운동의 장애 없이 양측 슬관절의 탄발음과 동통 및 파행을 주소로 한 6세 소아에서 관절경을 통해, 일반적인 탄발음의 원인이 아닌 외측 원판형 연골의 비후된 근위부착형의 리스버그 인대와 전방십자인대의 확장된 기시부의 충돌에 의해 탄발음이 유발된 1례를 발견하고 이를 관절경적으로 절제함으로서 치료하여 좋은 결과를 얻었기에 문헌 고찰과 함께 보고하는 바이다.