• Injury · Mar 2020

    Early resection of ectopic bone in patients with heterotopic ossification about the hip after trauma.

    • Peter A Cole, Anthony J Dugarte, Max Talbot, and Routt Milton L Chip MLC Jr Department of Orthopaedic Surgery, UT Health McGovern Medical School, Houston, TX, United States. Electronic address: Milto.
    • University of Minnesota, Regions Hospital, Department of Orthopaedic Surgery, St. Paul, MN, United States. Electronic address: Peter.A.Cole@healthpartners.com.
    • Injury. 2020 Mar 1; 51 (3): 705-710.

    ObjectivesHeterotopic ossification (HO) is a common complication in patients who have sustained high-energy trauma to the hip region. Traditionally, resection is performed after ectopic bone maturation. We hypothesized that early HO resection in patients with hip ankylosis after trauma can be performed with little chance of recurrence.DesignRetrospective clinical cohort.SettingLevel I Trauma Center PATIENTS/PARTICIPANTS: 14 patients with resection of HO about the hip performed by the senior author during a six-year period.InterventionEarly resection of Brooker Class III or IV HO.Main Outcome MeasurementsThe original injuries, risk factors for HO, post-traumatic clinical course including the workup for HO, times from fixation to resection, surgical approach, and complications were recorded. Records were reviewed to document pre and postoperative hip motions. Pre and post-operative x-rays and CT scans were reviewed to classify the HO and localize the ectopic mass.ResultsMean injury to resection interval was 6.8-months. Nine of 14 (64%) patients were followed for a mean of 32.9-months post-resection. Indications for resection included pain, stiffness, and evolving sciatic nerve lesions. Risk factors were male gender, brain injury, and extended iliofemoral and Kocher-Langenbeck surgical approaches. Complications included gluteal vein laceration, draining wounds, and recurrence. Mean flexion-extension arc of motion was 18° (range = 0-70°) preoperatively, 100° (range = 85-125°) intra-operatively, and 94° (range = 20-110°) at final follow-up. HO recurred in nine patients; functionally significant in one.ConclusionEarly resection of HO around the hip may be performed with little chance of symptomatic recurrence.Level Of EvidenceThis is a Level IV retrospective case series.Copyright © 2020. Published by Elsevier Ltd.

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