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Lower ExtremityFINAL - Lower Limb(Extremity(membrum...

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Lower Limb (Extremity) (membrum inferius) PARTS AND REGIONS: gluteal (buttock) hip (coxa) (area around hip joint) thigh (femur) knee (genu) popliteal (region behind knee) leg (crus) ankle (tarsus) foot (pes)
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Lower Extremity (Limb) A. Natis (clunis, gluteus) - buttock B. Coxa - hip C. Femur - thigh D. Genu - knee E. Popliteal - region behind knee F. Crus - leg G. Sural - region of the calf H. Fibular (peroneal) - lateral leg
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Lower Extremity I. Pes - foot 1. Tarsus - ankle 2. Metatarsus - “foot” 3. Digiti pedis - toes J. Calx - heel K. Planta pedis - sole L. Hallux - big toe M. Digitus minimus pedis - “pinky”
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Osteology Bony Pelvis (means ‘basin’) 1. Sacrum 2. Coccyx 3. Os Coxae (pelvis, hip bone, os innominatum) a) Ilium b) Ischium c) Pubis These 3 bones fuse to form each hip bone.
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Medial Surface Lateral Surface
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Function of Bones/Joints of Pelvis girdle bones of lower limb are designed for stability not mobility Pelvis joins with 5th lumbar above (lumbosacral junction) and below to 2 femurs at the hip joints Functions: a) primarily locomotor (attachments for trunk and lower limb muscles) - transmits weight to lower limbs (standing) or ischia (sitting) and absorbs reaction forces b) visceral - contents involve functions of micturition, defecation, sexual function, childbirth
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Pelvis articulates with 5th lumbar (lumbosacral junction) vertebra and paired femur (hip joints) L5-S1 Joint (Lumbosacral junction) basic components similar to other intervertebral joints cartilaginous joint coronal oriented z-joints lumbosacral angle (formed by lines drawn between long axis of 5th lumbar and sacrum -forward inclination of 30º) lumbosacral angle related to lumbar lordosis Sacro-iliac joints transmit forces from lower limbs to vertebral column synovial, irregular contour to resist movement often become fibrous with age, may become ossified
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