Sesamoid bones

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 



 



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