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  • Title: Management of traumatic labral tear in acetabular fractures with posterior wall component.
    Author: Yoo JH, Hwang JH, Chang JD, Oh JB.
    Journal: Orthop Traumatol Surg Res; 2014 Apr; 100(2):187-92. PubMed ID: 24568794.
    Abstract:
    BACKGROUND: Posterior labral tear is frequently encountered in acetabular fractures with posterior wall component (AFPWC). However, there has been very little information in the literature on the type and management of traumatic labral tears in AFPWC. HYPOTHESIS: Traumatic labral tear is a constant intracapsular injury in AFPWC and can be repaired using adequate methods according to its type and size. MATERIALS AND METHODS: A retrospective study of 14 patients (mean age 38 years [16-58]) who underwent open surgery for AFPWC was conducted using prospectively collected data. The types of posterior labral tear were investigated at intraoperative examination through the ruptured joint capsule or its extension, and were concomitantly managed. Surgical outcomes were clinically assessed using Merle d'Aubigné (PMA) score and Visual Analog Scale (VAS), and radiologically evaluated at final follow-up. RESULTS: Posterior labral tears were present in all 14 patients. The types of labral tear were osseous avulsion and posterior root avulsion tear (n=9), longitudinal peripheral tear and posterior root avulsion tear (n=2), longitudinal peripheral tear (n=2), and osseous avulsion tear (n=1). All unstable labra in 12 patients (86%) were repaired. All avulsion tears of the posterior root were repaired using a suture anchor, longitudinal peripheral tears using suture fixation or/and suture anchors, and osseous avulsion tears using a spring plate. The mean PMA score and VAS were 16.4 (14-18) and 1.7 (0-3) at final follow-up, respectively. The radiologic grades at last follow-up were good or excellent in all patients. DISCUSSION: All AFPWC in this study consistently revealed posterior labral tear. Posterior root avulsion tears accompanied with osseous avulsion was the most common type. Torn labra should be repaired as much as possible if unstable, considering the important functions of a normal labrum; fixation using a suture anchor may be useful for an avulsion tear of the posterior root. LEVEL OF EVIDENCE: Level IV, therapeutic case series.
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