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Research

AN ANATOMICAL BASIS FOR MEDIAL PROXIMAL TIBIAL KNEE PAIN IN PATIENTS WITH LATERAL PATELLA MALTRACKING

West of Scotland Research Society (WOSORS) - Glasgow Meeting of Orthopaedic Research (GLAMOR)



Abstract

The purpose of this study was to provide an anatomical explanation for the presence of medial proximal tibial pain in patients with patellar mal-tracking without identifiable medial tibio-femoral compartment or proximal tibial pathology.

Using cadaveric dissection we were consistently able to identify a connection between the medial patella and the medial proximal tibia including the medial hamstrings and the posterior oblique expansion. This connection is independent of the inferior patello-tibial ligament and has not previously been described in either anatomical or orthopaedic literature. The dimensions of this medial patello-tibial connection were measured using a digital microscribe. This technique also facilitated the creation of a three dimensional virtual representation of the patello-tibial connection.

In the clinical setting, patients presenting with medial proximal tibial pain who had patellar mal-tracking as identified by clinical examination and merchant radiographs underwent MRI scanning of the knee to exclude any intraarticular or proximal tibial pathology. In those patients with patellar mal-tracking that had no evidence of proximal tibial or medial compartment pathology identified, we were able to correlate the MRI finding of oedema based at the proximal medial aspect of the tibia with the cadaveric dissection findings mentioned previously. In such cases we would recommend that treatment of the medial proximal tibial pain should focus on managing the primary pathology of patella mal-tracking.

In conclusion we present a newly identified medial patello-tibial ligamentous complex that can explain the presence of medial proximal tibial pain in patients with patellar mal-tracking and no other proximal tibial or medial compartment pathology.


Correspondence should be sent to: Mr J.J. Joseph; email: