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General Orthopaedics

ARTHROSCOPIC LABRAL REPAIR IN BORDERLINE HIP DYSPLASIA

The International Society for Technology in Arthroplasty (ISTA), 29th Annual Congress, October 2016. PART 3.



Abstract

Introduction

The purpose of this study was to demonstrate postoperative improvement and high satisfaction rates after a surgical approach that includes arthroscopic labral repair only, in patients with borderline dysplasia, without instability.

Methods

Between September 2009 and December 2011, patients less than 50 years old who underwent hip arthroscopy for symptomatic intra-articular hip disorders, with a lateral center-edge (CE) angle between 20 and 25, were included in this study. Patients with Tönnis grade 2 or greater, hip joint space narrowing, severe hip dysplasia (CE〈20), hip joint instability and Legg-Calve-Perthes disease were excluded. Patient-reported outcome scores, including the modified Harris Hip Score (mHHS), Western Ontario and McMaster Universities Arthritis index (WOMAC), and visual analog scale (VAS) for pain were obtained in all patients preoperatively and at 1, 2, and 3 years postoperatively.

Results

A total of 36 patients met the criteria to be included in the study. Of these, 32 (88.8%) patients were available for follow-up. There was a significant improvement in mHHS from 67.19±7.66 to 82.69±6.95 (P<0.001), and WOMAC score from 58.90±5.77 to 77.90±6.38 (P<0.001). There was a significant improvement in VAS scores from 5.8 to 2.9 (P<0.001). There was a significant improvement in range of motion, flexion from 108.44±7.77 to 115.31±6.08 (P<0.001) and external rotation from 29.06±5.74 to 33.13±4.88 (P<0.001).

Conclusions

The current study demonstrates favorable results in borderline dysplasia hip without instability at minimum 3-year follow-up for an arthroscopic approach that includes labral repair. Labrum is the main key-stone structure, which should be preserved in borderline dysplasia hip for functional and pain improvement. Also the prognosis of treatment is probably forecasted more by the nature of stability and the intra-articular pathology rather than simply the presence or absence of radiographic finding of borderline dysplasia.


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