Abduction
Moving the limb or hand laterally away from the body, or spreading the fingers or toes.
Adduction
Movement that brings the limb or hand toward or across the midline of the body, or brings the fingers or toes together.
Amphiarthrosis
A slightly mobile joint.
Ankylosis
Fixation and immobility of a joint.
Appendicular skeleton
All bones of the upper and lower limbs, plus the girdle bones that attach each limb to the axial skeleton.
Arthralgia
Joint pain.
Arthritis
Chronic inflammation of the synovial joints.
Arthrocentesis
Surgical puncture to aspirate fluid from a joint.
Arthrodesis
Surgical fixation of a joint.
Arthrography
Process of recording a joint.
Arthroplasty
Joint replacement surgery.
Arthroscopy
Process of viewing a joint using an endoscope.
Articulations
Where two bone surfaces meet.
Autoimmune diseases/disorders
Disorders in which the immune system overreacts and begins to attack itself.
Axial skeleton
The central, vertical axis of the body, including the skull, vertebral column, and thoracic cage.
Bradykinesia
Condition of slow movement.
Bursitis
Inflammation of a bursa near a joint.
Chondromalacia
Degeneration of cartilage.
Chronic
A condition that lasts a long time with periods of remission and exacerbation.
Craniotomy
An operation in which a piece of the skull is removed.
Diarthrosis
Freely mobile joints.
Diskectomy
Excision of the intervertebral disk.
Discitis
Inflammation of the intervertebral disk.
Dyskinesia
Abnormal involuntary movements of the extremities, trunk, or jaw.
Edema
Swelling due to excessive liquid in the tissues.
Eversion
Foot movement in which the bottom of the foot is turned laterally, away from the midline.
Extension
Movement in the sagittal plane that increases the angle of a joint (straightens the joint).
Flexion
Movement in the sagittal plane that decreases the angle of a joint (bends the joint).
Hematopoiesis
The production of blood cells.
Hyperkinesia
Excessive movement of muscles of the body as a whole.
Hypertrophy
The enlargement of muscles.
Inversion
Foot movement in which the bottom of the foot is turned toward the midline.
Kyphosis
An excessive posterior curvature of the thoracic region; also called humpback.
Lordosis
Excessive anterior curvature of the lumbar vertebral column region; also called swayback.
Lumbar
Pertaining to the lumbar region of the spine (L1 to L5).
Lumbosacral
Pertaining to the region of the back that includes the lumbar vertebrae, sacrum, and nearby structures.
Muscular dystrophy
A general term for the group of inherited myopathies that are characterized by wasting and weakness of the skeletal muscle.
Osteitis
Inflammation of bone.
Osteoarthritis
The most common type of arthritis; associated with aging and “wear and tear” of the articular cartilage.
Osteoblast
The cell responsible for forming new bone.
Osteochondritis
Inflammation of bone and cartilage.
Osteocyte
Bone cell.
Osteomalacia
A softening of adult bones due to Vitamin D deficiency.
Osteomyelitis
Inflammation of bone and bone marrow.
Osteonecrosis
Abnormal condition of bone death (lack of blood supply).
Osteopenia
Abnormally low bone mass or bone mineral density.
Osteopetrosis
Abnormal condition of porous bones.
Osteoporosis
A disease characterized by a decrease in bone mass that occurs when the rate of bone resorption exceeds the rate of bone formation.
Osteosarcoma
Malignant tumor of bone.
Pelvic
Pertaining to the pelvis.
Pronation
Forearm motion that moves the palm of the hand from the palm forward to the palm backward position.
Rotation
Movement of a bone around a central axis or around its long axis.
Sarcopenia
Age-related muscle atrophy.
Scoliosis
Lateral curvature of the spine.
Spondyloarthritis
Inflammation of the joints of the spine.
Spondylosis
A degenerative spinal disease that can involve any part of the vertebra, intervertebral disk, and surrounding soft tissue.
Supination
Forearm motion that moves the palm of the hand from the palm backward to the palm forward position.
Synarthrosis
An immobile or nearly immobile joint.
Synovectomy
Excision of the synovial membrane.
Synovial sarcoma
Malignant tumor of the synovial membrane.
Tendinitis
Inflammation of the tendon.
Tenosynovitis
Inflammation of the synovial membrane of a tendon.
Vertebroplasty
A procedure used to repair a bone in the spine that has a break caused by cancer, osteoporosis, or trauma.