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. 1999 Dec;23(5):260–263. doi: 10.1007/s002640050366

Classification of lesions of the medial patello-femoral ligament in patellar dislocation

E Nomura 1
PMCID: PMC3619764  PMID: 10653289

Abstract 

The remnants of the medial patello-femoral ligament (MPFL) of 67 knees, 18 with acute patellar dislocation and 49 with chronic patellar dislocation, were studied. The MPFL injuries of the acute cases were categorised into 2 groups: an avulsion tear type and a substantial tear type. The chronic cases were put into 3 groups: those with loose femoral attachment (9 knees), those with scar tissue formation or abnormal scar branch formation (29 knees), and those with no evidence or continuity of the ligament (absent type) (11 knees). It is concluded that incompetence of the medial patello-femoral ligament is a major factor in the occurrence of recurrent patellar dislocation and/or an unstable patella following an acute patellar dislocation.

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Footnotes

Accepted: 7 August 1999


Articles from International Orthopaedics are provided here courtesy of Springer-Verlag

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