The medial patellomeniscal ligament is a thin band in the deep layer of the medial knee running from the inferomedial border of the patella to the anterior horn of the medial meniscus. Together with the medial patellofemoral and medial patellotibial ligaments it forms the medial patellar stabilising complex, where it acts as a secondary restraint to lateral patellar displacement.
| Origin | Inferomedial border of the patella |
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| Insertion | Anterior horn of the medial meniscus |
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Provides a secondary restraint to lateral patellar displacement and links the patella to the medial meniscus.
The medial patellomeniscal ligament is often torn alongside the MPFL in acute lateral patellar dislocation, and its distal patellar attachment can be avulsed with a small bony fragment. It is usually not reconstructed on its own, but combined medial patellotibial and patellomeniscal reconstruction is sometimes added to MPFL reconstruction for instability in deep flexion or in children with patellar instability.
Disruption of the inferomedial patellar stabilisers during lateral patellar dislocation, usually occurring together with an MPFL tear and seen on MRI as oedema or discontinuity at the inferomedial patella.
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