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Related Experiment Video

Updated: May 29, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

Difference in stair negotiation ability based on TKA surgical approach.

Michelle S Varnell1, Manoshi Bhowmik-Stoker, John McCamley

  • 1Banner Sun Health Research Institute The CORE Institute, Phoenix, Arizona, USA. michelle.varnell@thecoreinstitute.com

The Journal of Knee Surgery
|August 31, 2011
PubMed
Summary

For total knee arthroplasty (TKA), the mini-midvastus approach showed lower functional recovery compared to other methods. Surgeons should carefully consider this approach if early functional recovery is a primary goal.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Rehabilitation Medicine

Background:

  • Minimally invasive surgical techniques for total knee arthroplasty (TKA) aim to reduce soft-tissue damage and improve patient recovery.
  • Various surgical approaches exist for TKA, each with potential benefits and drawbacks regarding functional outcomes.

Purpose of the Study:

  • To compare the functional recovery of patients undergoing computer-navigated, minimally invasive TKA using different surgical approaches.
  • To evaluate the efficacy of mini-parapatellar, standard parapatellar, mini-midvastus (MV), and mini-subvastus approaches in terms of early functional ability.

Main Methods:

  • A randomized study involving 61 subjects undergoing computer-navigated, minimally invasive TKA.
  • Participants were assigned to one of four surgical approaches: mini-parapatellar, standard parapatellar, mini-MV, or mini-subvastus.

Related Experiment Videos

Last Updated: May 29, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

  • Functional ability was assessed by observing stair negotiation methods (handrail use, step-over-step, step-by-step) before and after surgery.

    • Main Results:

    • Subjects treated with the mini-midvastus (MV) approach exhibited significantly reduced functional ability at both 2 and 4 months post-surgery.
    • The mini-MV approach was found to be inferior to the other evaluated TKA surgical approaches in this study.
    • Stair negotiation patterns served as a reliable proxy for assessing early functional recovery after TKA.

    Conclusions:

    • The mini-midvastus approach may impede early functional recovery following total knee arthroplasty.
    • Surgeons should exercise caution when selecting the mini-MV approach for patients prioritizing rapid functional improvement after TKA.
    • Alternative surgical approaches may offer superior functional outcomes in the early postoperative period.