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Ligamentum Teres Reconstruction May Lead to Improvement in Outcomes Following a Secondary Hip Arthroscopy for Symptomatic Microinstability: A Systematic Review

Published:January 27, 2021DOI:https://doi.org/10.1016/j.arthro.2021.01.022

      Purpose

      To present the indications, surgical technique, outcomes, and complications for patients undergoing arthroscopic reconstruction of the ligamentum teres (LT).

      Methods

      Articles were included if they had postoperative patient-reported outcomes (PROs) for arthroscopic LT reconstruction. Studies were analyzed for patient demographics, clinical assessment and indications, radiographic and magnetic resonance imaging data, concomitant procedures performed, PROs, surgical techniques, intra-articular classifications, complications, and need for follow-up surgeries. For PROs, the standard mean difference was calculated. The proportion of patients achieving patient acceptable symptomatic state for postoperative modified Harris Hip Score (≥74) was recorded. The number of patients achieving minimal clinically important difference for modified Harris Hip Score (Δ ≥8) was calculated.

      Results

      The majority of the cases were revision arthroscopies. Of the 3 studies reporting on patients undergoing LT reconstruction due to microinstability, 4, 9, and 11 patients demonstrated a mean improvement of 25.7, 35.2, and 27.7 in modified Harris Hip, respectively. In addition, one of the studies reported a mean improvement of 31.1 and 4.2 in Nonarthritic Hip Score and visual analog scale, respectively. Of the 3 studies, the percentile of patients surpassing minimal clinically important difference and patient acceptable symptomatic state ranged between 50% and 100% and 33.3% and 88.8%, respectively. Overall, 5 patients underwent revision hip arthroscopy due to adhesions, iliopsoas impingement, and persistent microinstability, and 3 patients underwent a secondary hip arthroplasty due to refractory pain and radiographic evidence of hip osteoarthritis.

      Conclusion

      Reconstruction of the LT may be considered in surgical management for patients with symptomatic hip instability due to soft-tissue causes. Current evidence supports for LT reconstruction predominantly for patients experiencing refractory instability following previous hip preservation procedures. Patients’ expectations as well as the relatively high reoperation rate (i.e., 33%) should be discussed before the procedure.

      Level of Evidence

      Level IV, systematic review of Level IV studies.
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