Appendicular Skeleton

1
Chapter 7

• Appendicular Skeleton
• Everything that is not the Axial Skeleton, i.e.,
  pelvis and limbs

2
The Girdles

• Pectoral Girdle
• Supports the Arms
• Clavicle and Scapula
• Pelvic girdle
• Supports the Legs
• Os Coxae (pelvis)

3
Scapula

• Glenoid
• Spine
• Acromion
• Coracoid Process
• Acromioclavicular joint

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Clavicle (collarbone)
Manubrium to Acromion Frequently fractured
5
The Arm

• Synonyms Brachium, Upper limb, Thoracic
  Appendage
• Forearm Antebrachium
• Humerus, Radius and Ulna
• Carpus
• Hand

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Humerus

• Head
• Greater and Lesser Tubercles
• Intertubercular Groove
• Coronoid Fossa
• Olecranon Fossa
• Trochlea, Capitulum
• Medial and Lateral Epicondyles

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Radius Ulna

• Head, neck, shaft
• Radial Tuberosity (biceps brachii)
• Radial Styloid Process

• Olecranon
• Trochlear notch
• Coronoid Process
• Ulnar Styloid Process

Interosseous Membrane (between radius and
ulna) Note how the two bones can cross
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Carpus Wrist

• Four Proximal
• Scaphoid, lunate, triquetrum, pisiform
• Four Distal
• Trapezium, trapezoid, capitate, hamate

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Hand Manus

• Five metacarpal bones
• Five fingers
• Labeled 1-5
• Thumb Pollex digit 1
• Two phalanges
• Three phalanges/finger

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The Girdles

• Pectoral Girdle
• Supports the Arms
• Clavicle and Scapula
• Pelvic girdle
• Supports the Legs
• Os Coxae (pelvis)

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Pelvis os coxae

• Three bones Ilium, Ischium, Pubis (innominate
  bone)
• Iliac Spine, Crest
• Greater and Lesser Sciatic Notches
• Ischial Tuberosity
• Acetabulum
• Acetabular fossa
• Obturator Foramen

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More Pelvis

• Articular Surface for Articulation with Sacrum
• Difference between male and female
• Pelvic (or pubic) symphysis
• Hyaline Cartilage
• Stretches at childbirth (Relaxin)

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The leg

• Lower Limb
• Femur
• Patella
• Tibia/fibula
• Tarsus
• Foot

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Femur

• Head and fovea
• Neck and Shaft
• Greater and Lesser Trochanters
• Lateral and medial condyles and epicondyles
• Intercondylar fossa
• Patellar Surface

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Patella

• Sesamoid Bone
• Note Patellar Ligament/tendon

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Tibia Fibula

• Lateral and medial condyles
• Tibial Tuberosity
• Inferior articular surface
• Medial malleolus
• Interosseous Membrane

• Head
• Lateral malleolus

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Tarsus (7 bones) Cute Tillie Never Could
Cooperate

• Calcaneus
• Talus
• Navicular
• Cuboid
• Cunieform (3)

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Foot

• Metatarsals (5)
• Phalanges (3 per toe except big toe)
• Longitudinal Arch
• Transverse Arch

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