Under California law, a child with a “severe orthopedic impairment” is eligible for special education. A severe orthopedic impairment is one which adversely affects the pupil’s educational performance and includes those caused by congenital anomaly, impairments caused by disease (e.g., poliomyelitis, bone tuberculosis), and impairments from other causes (e.g., cerebral palsy, amputations, and fractures or burns that cause contractures). [34 C.F.R. Sec. 300.8(c)(8).] [5 C.C.R. Sec. 3030(b)(8).]