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Circumferential Labral Reconstruction With Knotless All-Suture Anchors Restores Hip Distractive Stability: A Cadaveric Biomechanical Analysis

Authors

Lall AC, Smith BL, Kahana-Rojkind AH, Khoury AN, Wijdicks CA, Domb BG

Journal

American Journal of Sports Medicine, 2024

Objective

To determine if circumferential labral reconstruction (CLR) with knotless all-suture anchors (ASAs) can restore the hip’s stability in cadaveric models.

Methodology

The study tested eight cadaveric hips in four states: intact labrum, labral excision, CLR with moderate tension, and CLR with high tension. Suction seal strength was measured using peak distractive force.

Key Findings

  • CLR restored 82% of the native labral suction seal strength.
  • Full labral removal weakened the hip's stability.
  • High-tension CLR didn’t outperform moderate tension in restoring stability.
  • The bevel angle of the acetabular rim improved suction seal restoration.

Conclusion

CLR with knotless ASAs appears to restore joint stability and offers a minimally invasive option that preserves bone, showing promise for treating hip instability.

What Does This Mean For Patients

For patients with hip instability, CLR might be a good option to restore joint stability while preserving bone, especially in cases of labral damage.

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