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Related Experiment Videos

Patellar component medialization in total knee arthroplasty

A A Hofmann1, T K Tkach, C J Evanich

  • 1University of Utah Health Science Center, Salt Lake City, USA.

The Journal of Arthroplasty
|February 1, 1997
PubMed
Summary

Patellar medialization during total knee arthroplasty reduces the need for lateral retinacular release. This technique may improve outcomes by avoiding complications associated with traditional patellar maltracking correction.

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Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering

Background:

  • Lateral retinacular release is a common method for correcting patellar maltracking during total knee arthroplasty (TKA).
  • This traditional approach is associated with potential complications, including increased postoperative pain, wound healing issues, and compromised patellar blood flow, leading to extended rehabilitation periods.

Purpose of the Study:

  • To evaluate the efficacy of patellar medialization as an alternative technique for managing patellar tracking during TKA.
  • To compare the incidence of lateral retinacular release between centralized and medialized patellar component placement.

Main Methods:

  • A prospective study involving 140 patients undergoing TKA with identical components.
  • Patients were divided into two groups: Group 1 (n=70) with centralized patellar components and Group 2 (n=70) with medialized patellar components to replicate the native sagittal ridge.

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  • Surgical technique for patellar medialization was detailed.

    • Main Results:

    • A significantly lower rate of lateral retinacular release was observed in the patellar medialization group (17%) compared to the centralized group (45.5%).
    • This suggests patellar medialization effectively addresses patellar tracking issues, potentially reducing the need for adjunctive procedures.

    Conclusions:

    • Patellar medialization is a viable surgical technique in TKA that can decrease the requirement for lateral retinacular release.
    • This approach may offer advantages by mitigating the risks and complications linked to lateral retinacular release, potentially improving patient recovery.