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Symptomatic anomalous insertion of the medial meniscus
Tetsuo Nakajima1, Yuji Nabeshima, Hideo Fujii
1Department of Orthopaedic Surgery, Himeji St. Mary's Hospital, Himeji, Japan.
Summary
A rare medial meniscus anomaly in a young athlete caused knee pain. Surgical removal of the anomalous band resolved symptoms, confirming fibrocartilaginous meniscal tissue.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Knee Anatomy
Background:
- Symptomatic meniscal anomalies can cause knee pain and dysfunction in athletes.
- Understanding variations in meniscal anatomy is crucial for accurate diagnosis and treatment.
- The medial meniscus plays a vital role in knee joint stability and shock absorption.
Observation:
- A young athlete presented with knee pain due to an anomalous portion of the medial meniscus.
- This anomaly, originating from the anterior horn, extended into the intercondylar notch, traversing the anterior cruciate ligament.
- The anomalous band was identified as fibrocartilaginous tissue, consistent with meniscal origin.
Findings:
- Arthroscopic resection of the anomalous meniscal band was performed.
- The patient experienced complete resolution of symptoms post-operatively.
- Histological examination confirmed the resected tissue was fibrocartilaginous, consistent with meniscus.
Implications:
- Arthroscopic surgery is an effective treatment for symptomatic anomalous meniscal tissue.
- This case highlights the importance of considering meniscal anomalies in young athletes with unexplained knee pain.
- Accurate diagnosis and targeted surgical intervention can lead to excellent patient outcomes.