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Postless Hip Distraction Systems Decrease the Amount of Traction Force Needed to Obtain Adequate Hip Distraction

Dillon C O'Neill1, Joseph Featherall2, S Blake Dowdle2

  • 1Department of Orthopaedic Surgery, University of Utah, Salt Lake City, Utah, U.S.A..

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|October 25, 2022
PubMed
Summary
This summary is machine-generated.

Postless hip arthroscopy systems require less traction force than post-based systems. This may reduce the risk of neurologic injuries and pain after hip distraction procedures.

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering

Background:

  • Hip arthroscopy is a common procedure for femoroacetabular impingement.
  • Traction is essential for hip distraction during arthroscopy, but can be associated with complications.
  • Different traction systems exist, including post-based and postless designs.

Purpose of the Study:

  • To compare hip distraction distance and traction force between post-based and postless hip arthroscopy systems.
  • To evaluate the impact of traction system type on hip stiffness coefficients.

Main Methods:

  • Prospective enrollment of adult patients undergoing primary hip arthroscopy for femoroacetabular impingement.
  • Comparison of post-based (pre-March 2019) and postless (post-March 2019) traction systems.
  • Measurement of intraoperative traction force and fluoroscopic distraction distance to calculate hip stiffness coefficients (k-hold and k-max).

Main Results:

  • The postless group (51 patients) required significantly lower mean holding traction force (55.8 kgf) and maximum traction force (69.9 kgf) compared to the post-based group (105 patients).
  • Postless traction was an independent predictor of decreased hip stiffness coefficients (k-hold and k-max) in multivariable analysis.
  • Male sex, Beighton score of 0, and poor hamstring flexibility predicted increased hip stiffness.

Conclusions:

  • Postless traction systems necessitate less force for adequate hip distraction compared to post-based systems.
  • Lower traction forces with postless systems may reduce the incidence of distraction-related neurologic injuries and post-operative pain.