What prefix is associated with the term "tendon"?

The prefix associated with the term "tendon" is indeed "tendon/o". This prefix is derived directly from the word "tendon" itself and is used in medical terminology to describe conditions, diseases, or procedures that involve tendons. For example, terms like "tendinitis" (inflammation of a tendon) or "tendoscopy" (a procedure to examine a tendon) utilize this prefix to clearly indicate their relation to tendon structures.

Other prefixes listed do not pertain specifically to tendons. "Synovi/o" relates to synovial fluid or synovial membranes, which are involved in joint lubrication, but do not directly indicate anything about tendons themselves. "Ankyl/o" refers to stiffness or fusion, often related to joints, and doesn't have a connection to tendons. "Arthr/o" indicates joints and is used in terms such as "arthritis", which focuses on joint-related conditions rather than those involving tendons. Thus, "tendon/o" is the most appropriate and accurate prefix to use when discussing matters directly associated with tendons.