Service de Chirurgie Orthopédique, Traumatologie et Chirurgie Réparatrice des Membres, Hôpital d’Instruction des Armées Percy, France
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Traumatic neurological lesions may lead to development of heterotopic ossification. These cases are classified as ‘neurogenic heterotopic ossifications’ (NHOs). The associated neurological lesions can be caused by cranial trauma or spinal cord injury and may sometimes include a local trauma.
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NHOs that form around the hip joints are of particular interest because they often cause the patient to avoid the sitting position or the resumption of walking.
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Whilst NHO can involve the knee, shoulder and elbow joints, hip-involving NHOs are more numerous, and sometimes develop in close contact with vascular or neurological structures.
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Multi-disciplinary clinical examination is fundamental to evaluate patients for surgical intervention and to define the objectives of the surgery. The best investigation to define an NHO mass is a computerized tomography (CT) scan.
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Resection is performed to liberate a fused joint to provide functionality, and this need not be exhaustive if it is not necessary to increase the range of motion.
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While recurrence does occur post-surgery, a partial resection does not pose a greater risk of recurrence and there are no adjuvant treatments available to reduce this risk.
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The greatest risks associated with NHO surgical resection are infection and haematoma; these risks are very high and must be considered when evaluating patients for surgery.
Cite this article: EFORT Open Rev 2019;4 DOI: 10.1302/2058-5241.4.180098
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-up studies comparing navigated and conventional implantation found no differences in clinical outcome, bone density and polyethylene wear between five and seven years post-surgery. 53 When working with navigation in practice, it must be remembered that
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12 weeks. The dislocation risk is relatively high due to extensive soft tissue release during surgery. Weight-bearing assisted by two crutches is required until consolidation of the osteotomy which usually occurs around the third month post-surgery
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by the remands of the capsule and the surrounding scar tissue. Post surgery the patient is allowed to ambulate with partial weight-bearing and gradually increase to full weight-bearing. Chalidis and Ries 79 presented two patients with PD (three
