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Updated: Jun 30, 2026

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Measured resection: an outdated technique in total knee arthroplasty.

Douglas A Dennis1

  • 1Colorado Joint Replacement, University of Colorado Health Sciences Center, Rocky Mountain Musculoskeletal Research Laboratory, 2535 S Downing St, #100, Denver, CO 80210, USA.

Orthopedics
|September 26, 2008
PubMed
Summary

Determining femoral component rotation in total knee arthroplasty (TKA) can be challenging. Gap balancing offers a more accurate and reproducible method for achieving stable flexion gaps compared to traditional landmark identification.

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Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Surgical outcomes research

Background:

  • Accurate femoral component rotation is crucial for successful total knee arthroplasty (TKA).
  • Traditional measured resection techniques rely on identifying bone landmarks, which surgeons often find difficult.
  • Inconsistent rotation can lead to poor functional outcomes and implant longevity.

Purpose of the Study:

  • To evaluate methods for determining correct femoral component rotation in TKA.
  • To compare the accuracy and reproducibility of different rotational alignment techniques.
  • To identify the optimal method for achieving stable flexion gap stability.

Main Methods:

  • Review of existing literature on femoral component rotation in TKA.

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  • Analysis of surgeon's ability to identify bone landmarks for rotational alignment.
  • Evaluation of gap balancing as an alternative or complementary technique.
  • Assessment of flexion gap stability achieved with different methods.

    • Main Results:

    • Surgeons frequently struggle to accurately identify critical bone landmarks for femoral rotation using measured resection.
    • Gap balancing demonstrates superior accuracy and reproducibility in achieving desired rotational alignment.
    • Combining multiple methods is recommended, with gap balancing being a key component.

    Conclusions:

    • Accurate femoral component rotation in TKA is essential for optimal joint function.
    • Gap balancing is a more reliable technique for ensuring correct femoral rotation and flexion gap stability.
    • Surgeons should consider integrating gap balancing into their TKA rotational alignment protocol.