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  2. Sesamoid bone - Wikipedia

    en.wikipedia.org/wiki/Sesamoid_bone

    Prevalence, structure, and locations of sesamoid bones of the hand. [5] [6] Sesamoid bones can be found on joints throughout the human body, including: In the knee—the patella (within the quadriceps tendon). This is the largest sesamoid bone. [4] In the hand—two sesamoid bones are commonly found in the distal portions of the first ...

  3. Pisiform bone - Wikipedia

    en.wikipedia.org/wiki/Pisiform_bone

    The pisiform is a sesamoid bone, with no covering membrane of periosteum. It is the last carpal bone to ossify. The pisiform bone is a small bone found in the proximal row of the wrist . It is situated where the ulna joins the wrist, within the tendon of the flexor carpi ulnaris muscle. [1]: 199, 205

  4. List of bones of the human skeleton - Wikipedia

    en.wikipedia.org/wiki/List_of_bones_of_the_human...

    There are a total of 64 bones in the arms, 32 in each arm Upper arm bones (6 bones in total; 3 on each side) Humerus (2) Pectoral girdle (shoulder) Scapula (2) Clavicle (2) Lower arm bones (4 bones in total, 2 on each side) left bone Ulna (2) (Lined up with pinky) Radius (2) (Lined up with thumb) Hand (54 bones in total; 27 in each hand) Carpals

  5. Anatomical terms of bone - Wikipedia

    en.wikipedia.org/wiki/Anatomical_terms_of_bone

    A sesamoid bone is a small, round bone that, as the name suggests, is shaped like a sesame seed. These bones form in tendons (the sheaths of tissue that connect bones to muscles) where a great deal of pressure is generated in a joint. The sesamoid bones protect tendons by helping them overcome compressive forces.

  6. Muscles of the thumb - Wikipedia

    en.wikipedia.org/wiki/Muscles_of_the_thumb

    This is a very important movement, as most of human hand dexterity including grip comes from this action. The abductor pollicis brevis originates on the scaphoid tubercle and the flexor retinaculum. It inserts to the radial sesamoid bone and the proximal phalanx of the thumb. It is innervated by the median nerve (C8 and T1). [6]

  7. Flexor pollicis brevis muscle - Wikipedia

    en.wikipedia.org/wiki/Flexor_pollicis_brevis_muscle

    [3] It arises from the trapezoid and capitate bones on the floor of the carpal tunnel, as well as the ligaments of the distal carpal row. [3] Both heads become tendinous and insert together into the radial side of the base of the proximal phalanx of the thumb; [2] at the junction between the tendinous heads there is a sesamoid bone. [4]

  8. Category:Sesamoid bones - Wikipedia

    en.wikipedia.org/wiki/Category:Sesamoid_bones

    Pages in category "Sesamoid bones" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. ...

  9. Thumb - Wikipedia

    en.wikipedia.org/wiki/Thumb

    The transversal head originates along the entire third metacarpal bone, while the oblique head originates on the carpal bones proximal to the third metacarpal. The muscle is inserted onto the ulnar sesamoid bone of the metacarpophalangeal joint. It adducts the thumb, and assists in opposition and flexion.