Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 3 Authors’ classification of neurogenic HO of the hip
From: A classification method for neurogenic heterotopic ossification of the hip
Type | Patients (n = 24)/hips (n = 33) | Description |
|---|---|---|
Type 1 | ||
a: Spinal cord injury | 3/3 | Neurogenic HO at the anterior hip or the proximal end of the femur, with or without ankylosis |
b: Brain injury | 1/2 | |
Type 2 | ||
a: Spinal cord injury | 2/2 | Neurogenic HO at the posterior hip or the proximal end of the femur, with or without ankylosis |
b: Brain injury | 2/2 | |
Type 3 | ||
a: Spinal cord injury | 4/7 | Neurogenic HO at the anterior and medial hip or the proximal end of the femur, with or without ankylosis |
b: Brain injury | 8/11 | |
Type 4 | ||
a: Spinal cord injury | 3/5 | Neurogenic HO around the hip (circumferential), with or without ankylosis |
b: Brain injury | 1/1 | |