Lower ExtremityFINAL

Lower ExtremityFINAL - Lower Limb(Extremity(membrum inferius PARTS AND REGIONS • gluteal(buttock • hip(coxa(area around hip joint •

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Unformatted text preview: 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) 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 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” 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. Medial Surface Lateral Surface 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 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 Pelvis articulates with 5th lumbar (lumbosacral...
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This note was uploaded on 11/10/2011 for the course KNH 244L taught by Professor Omolewu during the Spring '10 term at Miami University.

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Lower ExtremityFINAL - Lower Limb(Extremity(membrum inferius PARTS AND REGIONS • gluteal(buttock • hip(coxa(area around hip joint •

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