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The medial patellofemoral ligament: a dissection study
Jon I Tuxøe1, Maged Teir, Søren Winge
1Department of Orthopedics, Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark. jontux@dadlnet.dk
Summary
This study details the anatomy of the medial patellofemoral ligament (MPFL) in human knees. Identifying the superior edge is crucial for diagnosing MPFL tears and improving surgical repair.
Area of Science:
- Orthopedic Surgery
- Anatomy
- Sports Medicine
Background:
- The medial patellofemoral ligament (MPFL) is critical for patellar stability.
- Accurate anatomical understanding aids in interpreting MRI and surgical repair.
Purpose of the Study:
- To precisely describe the anatomy and innervation of the MPFL.
- To correlate anatomical findings with diagnostic imaging and surgical techniques for MPFL injuries.
Main Methods:
- Dissection of 39 unpreserved human knees to examine MPFL morphology and relationships.
- Exact measurements of MPFL dimensions and attachments.
- Histological examination of 14 ligaments for innervation patterns.
Main Results:
- The MPFL was consistently present, with average dimensions of 1.9 cm width and 5.3 cm length.
- The superior edge of the MPFL was reliably identifiable, suggesting its importance in diagnosing tears.
- Innervation included free nerve endings, but no mechanoreceptors were found.
Conclusions:
- Detailed anatomical knowledge of the MPFL improves MRI interpretation and surgical repair.
- The superior edge's visibility is a key indicator for MPFL integrity.
- Variations in patellar and MPFL length ratios preclude their use in reconstruction calculations.