Heterotopic ossification of the hip after spinal cord injury

Objective To analyse the risk factors of hetero- out. topic ossification af ter spinal cord injury. Methods Of 104 patients with spinal cord injury, 47 (45.2%) were complicate d by heterotopic ossification of the hip. These patients with heterotopic o ssification were compared with 57 patients without heterotopic ossification . Results Statistical analysis showed that complete paraplegia, spasticity an d pressure sore were significantly (P < 0.05) or highly significantly (P < 0.01) related to heterotopic ossification formation. The coexistence of two or three of these factors in the paraplegic patients was found to signific antly (P < 0.01) enhance the risk of heterotopic ossification formation. Conclusion When the spinal cord injured patients have single or multiple ri sk factors, they should be predicted for susceptibility of heterotopic ossi fication.