1. Wittenberg RH, Peschke U, Bötel U. Heterotopic ossification after spinal cord injury. Epidemiology and risk factors. J Bone Jt Surg Br. 1992;74:215–8.
2. Van Kuijk AA, Geurts AC, van Kuppevelt HJ. Neurogenic heterotopic ossification in spinal cord injury. Spinal Cord. 2002;40:313–26.
https://doi.org/10.1038/sj.sc.3101309.
3. Erhan B, Gunduz B, Vural M, Yalcinkaya EY, Kahraman F, Satir O. The incidence and characteristics of heterotopic ossification in patients with spinal cord injury. SM J Neurol Disord Stroke. 2016;2:1013.
4. Taly AB, Nair KP, Jayakumar PN, Ravishankar D, Kalaivani PL, Indiradevi B, et al. Neurogenic heterotopic ossification: a diagnostic and therapeutic challenge in neurorehabilitation. Neurol India. 2001;49:37–40.
5. Hassard GH. Heterotopic bone formation about the hip and unilateral decubitus ulcers in spinal cord injury. Arch Phys Med Rehabil. 1975;56:355.±358.