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MPFL reconstruction corrects patella alta: a cohort study.

Shannon Shan Wei Shih1, Chung Liang Kuo2, Dave Yee Han Lee3

  • 1Department of Orthopaedic Surgery, Changi General Hospital, Singapore, Singapore. shannon.shih@mohh.com.sg.

European Journal of Orthopaedic Surgery & Traumatology : Orthopedie Traumatologie
|June 23, 2021
PubMed
Summary
This summary is machine-generated.

Medial patellofemoral ligament (MPFL) reconstruction effectively corrects patella alta, a key factor in recurrent patellar dislocations. This surgical procedure significantly improves knee function and reduces dislocation recurrence rates.

Keywords:
MPFL reconstructionMedial patellofemoral ligamentPatella altaPatellar instability

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Area of Science:

  • Orthopedic surgery
  • Biomechanics
  • Sports medicine

Background:

  • Patella alta is a recognized risk factor for recurrent lateral patellar dislocations.
  • Medial patellofemoral ligament (MPFL) reconstruction is a surgical technique used to address patellar instability.
  • MPFL reconstruction has demonstrated potential in reducing patellar height.

Purpose of the Study:

  • To investigate whether isolated MPFL reconstruction corrects patella alta.
  • To evaluate the impact of MPFL reconstruction on reducing the risk of recurrent patellar dislocations.

Main Methods:

  • Prospective cohort study involving 33 knees undergoing MPFL reconstruction for recurrent patellar dislocation.
  • Pre-operative and post-operative measurements included patella height, Kujala knee outcome scores, TT-TG distance, and trochlear dysplasia grade.
  • Data analysis focused on changes in these parameters following surgery.

Main Results:

  • Significant reduction in patella height observed post-operatively (p < 0.001).
  • 67% normalization of patella alta (CD ≥ 1.2) was achieved (p < 0.004).
  • Kujala scores improved from 57.1 pre-operatively to 94.8 post-operatively (p < 0.0001), with a 3% recurrent dislocation rate.

Conclusions:

  • Isolated MPFL reconstruction effectively corrects patella alta.
  • The procedure leads to significant improvements in clinical outcomes and knee function.
  • MPFL reconstruction is a viable option for reducing recurrent patellar dislocations.