Sciatica due to extrapelvic heterotopic ossification: a case report.
BACKGROUND
Sciatica is a common problem, usually caused by disc herniation or spinal stenosis. Low back pain is also present in most cases. When sciatica is the unique clinical finding, especially in young patients, extraspinal pathology should be investigated.


METHODS
We describe a rare case of sciatica in a 32-year-old man, which was developed as a complication of post-traumatic pelvic heterotopic ossification. During the operation, the sciatic nerve was found to be bluish, distorted and compressed in an hourglass fashion around a heterotopic bone mass. The heterotopic bone tissue, 4 cm in diameter, was removed and the patient had fully recovered 3 months after the operation.


CONCLUSIONS
In cases of sciatica without back pain, the possibility of direct pressure of the sciatic nerve from cysts, tumours or bone, as in the present case, should be considered.
Panagiotopoulos
Elias C
EC
Department of Orthopaedics, University Hospital of Patras, Rion Patras, Greece. ecpanagi@med.upatras.gr
Syggelos
Spyros A
SA
Plotas
Athanasios
A
Tsigkas
Gregorios
G
Dimopoulos
Panagiotis
P
Spine (Phila Pa 1976). 1990 Dec;15(12):1345-9
2281377
Surg Neurol. 1996 Jul;46(1):14-8
8677479
Injury. 2004 Oct;35(10):1071-2
15351680
J Bone Joint Surg Am. 1981 Feb;63(2):201-8
6780568
J Neurosurg. 1968 Aug;29(2):168-72
5673315
Am J Phys Med. 1987 Dec;66(6):351-63
3124630
Ann Vasc Surg. 2005 Jan;19(1):120-2
15714380
Spine (Phila Pa 1976). 1998 Feb 15;23(4):494-6
9584006
J Bone Joint Surg Br. 2005 Apr;87(4):513-7
15795202