1. Sesamoid bones are small, round bones embedded within tendons.
2. Location: Found in areas where tendons pass over joints.
3. Unlike long bones, sesamoid bones lack a medullary cavity and haversian system.
Sesamoid Bone | Associated Tendon | Location |
Patella cubiti | Triceps brachii | Near elbow joint |
Pisiform | flexor carpi ulnaris (FCU) | Wrist joint |
Fabella | Lateral head of the gastrocnemius muscle | Posterior to the knee joint |
First metatarsal sesamoids (two sesamoid bones) | Flexor hallucis brevis | Under the first metatarsophalangeal (MTP) joint of the big toe |
