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A Novel Technique of Rescuing Capsulorhexis Radial Tear-out using a Cystotome
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Pie-Crusting Capsulotomy Provides Similar Visualization With Increased Repair Stiffness Compared With a

Frank B Wydra1, Ian Al'Khafaji1, Lee Haruno2

  • 1Kerlan-Jobe Institute, Cedars-Sinai, Los Angeles, California; Santa Monica Orthopaedic & Sports Medicine Group, Santa Monica, California.

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|April 3, 2021
PubMed
Summary

The pie-crusting capsulotomy technique offers similar hip strength and visualization to T-capsulotomy after repair, while improving stiffness. This technique provides a viable alternative for hip arthroscopy procedures.

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering
  • Arthroscopy

Background:

  • Hip arthroscopy visualization can be challenging, particularly with large cam morphology.
  • Restoring native hip biomechanics after capsular repair is crucial for patient outcomes.

Purpose of the Study:

  • To compare visualization area, capsular stiffness, and strength between pie-crusting capsulotomy and T-capsulotomy techniques following hip arthroscopy repair.
  • To evaluate the biomechanical and visual outcomes of these two capsulotomy methods.

Main Methods:

  • Eight matched pairs of cadaveric hips underwent either T-capsulotomy or pie-crusting capsulotomy followed by repair.
  • Visualization area was quantified using a digitizing probe.
  • Hip distraction and external rotation to failure were performed to assess biomechanical properties.

Main Results:

  • Both techniques significantly improved visualization and reduced the force needed for hip distraction compared to intact hips.
  • Following repair, pie-crusting capsulotomy demonstrated significantly greater stiffness than T-capsulotomy.
  • No significant difference was found in ultimate torque to failure between the two techniques.

Conclusions:

  • The pie-crusting technique offers comparable strength and visualization to T-capsulotomy post-repair, with enhanced stiffness and potentially reduced suture use.
  • Pie-crusting capsulotomy presents a clinically relevant alternative to T-capsulotomy, yielding similar biomechanical and visual outcomes.