Orthopedic impairment means a severe orthopedic impairment that adversely affects a student’s educational performance. The term includes impairments caused by congenital anomaly (e.g., club foot, absence of some member, etc.), impairments caused by disease (poliomyelitis, bone tuberculosis, etc.), and impairments from other causes (e.g., cerebral palsy, amputations and fractures, or burns that cause contractures).