Glossary beginning with A

Click one of the letters above to go to the page of all terms beginning with that letter.


Acetabular search for term
Relating to a cup-shaped structure, especially the socket of the hip bone (the acetabulum).
Acetabulum search for term

The socket of the hip bone, into which the head of the femur fits.

Achilles tendonitis search for term

An overuse injury of the Achilles (uh-KILL-eez) tendon, the band of tissue that connects calf muscles at the back of the lower leg to your heel bone. Achilles tendinitis most commonly occurs in runners who have suddenly increased the intensity or duration of their runs.

Ankylosing spondylitis search for term

An inflammatory disease that, over time, can cause some of the small bones in your spine (vertebrae) to fuse. This fusing makes the spine less flexible and can result in a hunched-forward posture.

arthritis search for term

A disease causing painful inflammation and stiffness of the joints.

Arthrofibrosis search for term

A fibrotic joint disorder characterized by excessive collagen production and adhesions that result in restricted joint motion and pain. It can occur in most joints, and is referred to by a number of names including frozen shoulder, adhesive capsulitis, joint contracture, stiff knee and stiff elbow.

arthropathy search for term

A disease of a joint.

Arthroscopy search for term

The use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.

atrophy search for term

(of body tissue or an organ) waste away, especially as a result of the degeneration of cells, or become vestigial during evolution.

autologous search for term

Autologous donations are donations that individuals give for their own use – for example, before a surgery.