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Updated: May 9, 2025

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Modified Recession Wedge Trochleoplasty.

Navya Dandu1, Derrick M Knapik1, Reem Y Darwish1

  • 1Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA.

Video Journal of Sports Medicine
|May 1, 2025
PubMed
Summary
This summary is machine-generated.

Trochleoplasty can improve knee stability and function in patients with recurrent patellar instability due to trochlear dysplasia, even after previous failed surgeries. However, potential complications like pain and reduced range of motion require careful consideration.

Keywords:
medial patellofemoral ligamentpatellar instabilitysurgical techniquetrochlear dysplasiatrochleoplasty

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Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Knee joint anatomy

Background:

  • Trochlear dysplasia is a primary anatomical risk factor for patellar instability.
  • Unaddressed dysplasia can lead to high rates of surgical failure and poor outcomes in patellar stabilization procedures.

Purpose of the Study:

  • To evaluate the efficacy of trochleoplasty in patients with recurrent patellar instability and trochlear dysplasia.
  • To assess outcomes following trochleoplasty, particularly in cases of failed prior stabilization attempts.

Main Methods:

  • A lateral parapatellar arthrotomy is performed to access the trochlea.
  • A bony flap is created and reshaped to correct trochlear morphology.
  • Sutures and anchors are used to reduce the osteotomy and stabilize the trochlear groove.

Main Results:

  • Trochleoplasty has been shown to reduce recurrent patellar dislocations.
  • Patients experience improvements in mean Kujala scores and overall knee function.
  • Potential complications include pain and decreased knee range of motion due to technical challenges.

Conclusions:

  • Trochleoplasty offers improved stability and outcomes for patients with recurrent patellar instability and trochlear dysplasia, especially after prior surgical failures.
  • The procedure's benefits must be weighed against its associated risks and the steep learning curve.