Bilateral sciatic nerve entrapment due to heterotopic ossification in a traumatic brain-injured patient.

We report a 22-yr-old man who was admitted to our inpatient rehabilitation center 17 mos after a traumatic brain injury (TBI). He was also diagnosed to have bilateral sciatic nerve entrapment attributable to hip heterotopic ossification (HO). Presenting the first report of a sciatic nerve entrapment secondary to a HO in TBI, we herein discuss the concurrence of a lower-motor nerve problem in a patient with an upper-motor nerve injury.