| A | B |
| ANA | Blood test to diagnose systemic lupus |
| Ankylosis | Immobility of a joint |
| Antinuclear Antibody | ANA |
| Arthritis | Inflammation of a joint |
| Arthrocentesis | Surgical puncture to remove fluid from a joint space for analysis |
| Arthrography | Process of taking images of a joint after injection of contrast media |
| Arthroplasty | Surgical repair of a joint |
| Arthroscopy | Visual examination of the inside of a joint with an arthroscope |
| Articulation | Joint |
| Bunion | Inflammation and thickening of the joint of the big toe and first metatarsal bone |
| Bursa | Sac or cavity of fluid near a joint |
| Bursitis | Inflammation of a bursa |
| Carpal tunnel syndrome | Compression (by wrist ligament) of the median nerve as it passes between the ligament and the bones and tendons of the wrist |
| Carpal tunnel syndrome | CTS |
| Dislocation | Displacement of a bone from its joint |
| Erythrocyte sedimentation rate | Rate at which erythrocytes fall as sediment in test tube; performed for diseases such as rheumatoid arthritis |
| Erythrocyte sedimentation rate | ESR |
| Ganglion | Cystic mass arising from a tendon (often at the wrist) |
| Gouty arthritis | Inflammation of joint caused by deposits of uric acid crystals |
| Joint | Where two bones come together |
| Ligament | Band of connective tissue that binds bones to other bones. |
| Osteoarthritis | Inflammation of the bones and joints |
| Sprain | Trauma to a joint with pain, swelling and injury to ligaments |
| Suture Joints | Immobility joints like the skull bones |
| Synovial cavity | Space between bones at a synovial joint |
| Synovial fluid | Clear lubricating fluid of a joint |
| Synovial Joints | Joints that are freely movable like the hip joint |
| Tendinitis | Inflammation of a tendon |
| Tendon | Connective tissue that binds muscles to bones. |
| Torticollis | Stiff neck with muscle spasm, pulling neck to the affected side |
| Torticollis | Wryneck |