Human Osteology ASA Bio 2014 Williams
Major Divisions of the Body Cranial – skull Infracranial – the rest of the body Axial – trunk & head (parts in midline) Appendicular – appendages/ limbs Includes pelvic and shoulder girdles
Upper Limb Clavicle Scapula Humerus Radius Ulna Carpals Metacarpals Phalanges
Clavicle 1 right & 1 left Articulates with sternum medially and scapula laterally Part of shoulder girdle
Scapula 1 right & 1 left Articulates with clavicle and humerus Does NOT articulate with ribs Part of shoulder girdle
Humerus 1 right & 1 left Articulates with scapula, ulna & radius
Ulna 1 right & 1 left Articulates with humerus & radius Connected to radius by interosseous membrane Does NOT articulate with carpal bones
Radius 1 right & 1 left Articulates with humerus, ulna, and proximo-lateral aspect of carpal bones Connected to ulna by interosseous membrane
Carpals Bones of the wrist 8 elements (per side) 2 rows of 4 Proximal row articulates with radius Distal row articulates with metacarpals
Metacarpals Bones of the hand 5 elements (per side) Articulate with distal row of carpals and phalanges Numbered lateral to medial MC1 – MC5
Manual Phalanges Bones of the fingers 14 elements (per side) Separated into three rows Proximal phalanges (5) Intermediate phalanges (4) Distal phalanges (5) Singular – phalanx Intermediate
Lower Limb Innominate Femur Patella Tibia Fibula Tarsals Metatarsals Phalanges
Innominate Os coxa 1 right & 1 left Articulate with sacrum posteriorly, other innominate anteriorly, and femur laterally
Innominates 3 parts Ilium Ischium Pubis
Femur 1 right & 1 left Considered strongest bone Articulates with innominate, tibia, and patella
Patella 1 right & 1 left Sesamoid bone Articulates only with femur
Tibia 1 right & 1 left Articulates with femur, fibula and talus (tarsal bone) Weight bearing bone of the lower leg Connected to fibula with interosseous membrane
Fibula 1 right & 1 left Non-weight bearing Articulates with tibia and talus (tarsal bone) Connected to tibia by interosseous membrane
Tarsals Bones of the ankle 7 elements (per side) Articulate with each other, tibia, fibula, and metatarsals
Metatarsals Bones of the foot 5 elements (per side) Numbered medially to laterally MT1 – MT5 Articulate with tarsals and phalanges
Pedal Phalanges Bones of the toes 14 elements (per side) Separated into three rows Proximal phalanges (5) Intermediate phalanges (4) Distal phalanges (5) Singular – phalanx