1. Colachis S C, Clinchot D M, Venesy D . Neurovascular complications of heterotopic ossification following spinal cord injury. Paraplegia 1993; 31: 51–57.
2. Wittenberg R H, Peschke U, Bötel U . Heterotopic ossification after spinal cord injury: epidemiology and risk factors. J Bone Joint Surg Br 1992; 74: 215–218.
3. Colachis S C, Clinchot D M . The association between deep ven-ous thrombosis and heterotopic ossification in patients with acute traumatic spinal cord injury. Paraplegia 1993; 31: 507–512.
4. Catz A et al. Is the appearance of periarticular new bone formation related to local neurological disability? Paraplegia 1992; 30: 361–365.
5. Bravo-Payno P et al. Incidence and risk factors in the appearance of heterotopic ossification in spinal cord injury. Paraplegia 1992; 30: 740–745.