Under which structure is the subtendinous bursa located?

Under which structure is the subtendinous bursa located?

• A. Under a ligament
• B. Under a bone
• C. Under a tendon
• D. Under a muscle

Answer: (C)

Subtendinous describes a bursa that sits beneath a tendon. Bursae are small sacs filled with synovial fluid that cushion moving parts and reduce friction. When a bursa lies under a tendon, it provides a smooth gliding surface between the tendon and the underlying bone or deep tissues as the tendon moves. A common example is a subtendinous bursa under the Achilles tendon, between the tendon and the calcaneus. This differs from bursae located under a ligament (subligamentous), under bone (subperiosteal), or under a muscle (submuscular), which is why the subtendinous position is the correct relationship.

Subtendinous describes a bursa that sits beneath a tendon. Bursae are small sacs filled with synovial fluid that cushion moving parts and reduce friction. When a bursa lies under a tendon, it provides a smooth gliding surface between the tendon and the underlying bone or deep tissues as the tendon moves. A common example is a subtendinous bursa under the Achilles tendon, between the tendon and the calcaneus. This differs from bursae located under a ligament (subligamentous), under bone (subperiosteal), or under a muscle (submuscular), which is why the subtendinous position is the correct relationship.