Ankylosis- The stiffening or immobility of a joint resulting from disease, trauma, surgery, or bone fusion. Aphasia- defect or loss of the power of expression by speech, writing, or signs, or of comprehending spoken or written language, due to injury or disease of the brain centers. Apraxia- A disorder of voluntary movement consisting of the partial or complete inability to execute purposeful movements without the impairment of muscular power and coordination. Ataxia- failure of muscular coordination; irregularity of muscular action Bursa- a fluid-filled sac or saclike cavity situated in places in tissues where friction would otherwise occur Clonic- the alternating pattern of releasing and tightening a muscle Contracture- An abnormal, often permanent shortening, as of muscle or scar tissue, that results in distortion or deformity, especially of a joint of the body. CVA- cerebrovascular accident Dystonia- abnormality of muscular tonus. Crepitus- a crackling sound such as that produced by the rubbing together of fragments of a fractured bone or by air moving in a tissue space Flaccidity- quality of lack of tone of muscular or vascular organ or tissue. Hemiplegia- Paralysis affecting only one side of the body. Kyphosis- abnormally increased convexity in the curvature of the thoracic spine as viewed from the side. Lordosis- An abnormal forward curvature of the spine in the lumbar region. Meningitis- Inflammation of the meninges of the brain and the spinal cord, most often the result of a bacterial or viral infection and characterized by fever, vomiting, intense headache, and stiff neck. Myelitis- Inflammation of the spinal cord. Inflammation of the bone marrow. Myopathy- Any of various abnormal conditions or diseases of the muscular tissues Neuralgia- Sharp, severe paroxysmal pain extending along a nerve or group of nerves Osteoporosis- A disease characterized by decrease in bone mass and density, occurring especially in postmenopausal women, resulting in a predisposition to fractures and bone deformities such as vertebral collapse Paralysis- loss or impairment of motor function in a part due to a lesion of the neural or muscular mechanism ROM- range of motion Sciatica- Pain along the sciatic nerve that radiates from the lower back to the buttocks and back of the thigh and is usually caused by a herniated disk of the lumbar region of the spine. Spasticity- a form of muscular hypertonicity with increased resistance to stretch. Syncope- A brief loss of consciousness caused by a sudden fall of blood pressure or failure of the cardiac systole, resulting in cerebral anemia. Tonic- producing and restoring normal tone.