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Medial patellofemoral ligament reconstruction in patellar instability

Indian Journal of Orthopaedics volume 48, pages 501–505 (2014)Cite this article

Abstract

Background

Medial patellofemoral ligament (MPFL) is one of the major static medial stabilising structures of the patella. MPFL is most often damaged in patients with patellar instability. Reconstruction of MPFL is becoming a common surgical procedure in treating patellar instability. We hypothesised that MPFL reconstruction was adequate to treat patients with patellar instability if the tibial tubercle and the centre of the trochlear groove (TT-TG) value was less than 20 mm and without a dysplastic trochlea.

Materials and Methods

30 patients matching our inclusion criteria and operated between April 2009 and May 2011 were included in the study. MPFL reconstruction was performed using gracilis tendon fxed with endobutton on the patellar side and bio absorbable interference screw or staple on the femoral side. Patients were followed up with subjective criteria, Kujala score and Lysholm score.

Results

The mean duration of followup was 25 months (range 14-38 months). The mean preoperative Kujala score was 47.5 and Lysholm score was 44.7. The mean postoperative Kujala score was 87 and Lysholm score was 88.06. None of the patients had redislocation.

Conclusion

MPFL reconstruction using gracilis tendon gives excellent results in patients with patellar instability with no redislocations. Some patients may have persistence of apprehension.

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Affiliations

  1. Department of Arthroscopy and Sports Medicine, Ortho One Orthopaedic Speciality Centre, Coimbatore, Tamil Nadu, India

    M. S. Krishna Kumar, Sankarram Renganathan, Clement J. Joseph, T. R. Easwar & David V. Rajan

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  1. M. S. Krishna Kumar
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  2. Sankarram Renganathan
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  3. Clement J. Joseph
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  4. T. R. Easwar
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  5. David V. Rajan
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Correspondence to M. S. Krishna Kumar.

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Kumar, M.S.K., Renganathan, S., Joseph, C.J. et al. Medial patellofemoral ligament reconstruction in patellar instability. IJOO 48, 501–505 (2014). https://doi.org/10.4103/0019-5413.139864

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  • DOI: https://doi.org/10.4103/0019-5413.139864

Key words

  • Gracilis tendon
  • Kujala score
  • medial patellofemoral ligament
  • patellar instability

MeSH terms

  • Tendon transfer
  • ligaments
  • patellar dislocation
  • joint instability