Hip & pelvis

The Korean Hip Society (대한고관절학회)
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Surgical Resection of Neurogenic Heterotopic Ossification around Hip Joint in Stroke Patients: A Safety and Outcome Report

  • Jae-Young Beom (Department of Orthopedic Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School) ;
  • WengKong Low (Orthopaedic and Traumatology Department, Hospital Kuala Lumpur) ;
  • Kyung-Soon Park (Department of Orthopedic Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School) ;
  • Taek-Rim Yoon (Department of Orthopedic Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School) ;
  • Chan Young Lee (Department of Orthopedic Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School) ;
  • Hyeongmin Song (Department of Orthopedic Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School)
  • Received : 2023.01.10
  • Accepted : 2023.06.15
  • Published : 2023.12.31
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Abstract

Purpose: Resection remains the most reliable treatment for established heterotopic ossification, despite questions regarding its effectiveness due to the potential for complications. This study evaluated the clinical outcomes and complications of neurogenic heterotopic ossification (NHO) resection in stroke patients' ankylosed hips. Materials and Methods: We retrospectively analyzed nine hip NHO resections performed on seven patients from 2010 to 2018. The pre- and postoperative range of motion of the operated hip were compared. Analysis of postoperative complications, including infection, recurrence, iatrogenic fracture, and neurovascular injury was performed. Results: The mean operative time was 132.78±21.08 minutes, with a mean hemoglobin drop of 3.06±0.82 g/dL within the first postoperative week. The mean duration of postoperative follow-up was 52.08±28.72 months for all patients. Postoperative range of motion showed improvement from preoperative. Flexion and external rotation (mean, 58.89±30.60° and 16.67±18.03°, respectively) showed the greatest gain of motion of the operated hip joint. Postoperative infections resolved in two cases through surgical debridement, and one case required conversion to total hip arthroplasty due to instability. There were no recurrences, iatrogenic fractures, or neurovascular injuries. Conclusion: Resection is a beneficial intervention for restoring the functional range of motion of the hip in order to improve the quality of life for patients with NHO and neurological disorders. We recommend performance of a minimal resection to achieve a targeted functional arc of motion in order to minimize the risk of postoperative complications.

Keywords

References

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