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Ball socket joint shoulder hip only multiaxial joints

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Unformatted text preview: sheaths, bursae wrapped around tendons of Also tendon bursae hand and foot hand Synovial joints Synovial 6 types of synovial joints~ 4 common joints are…. • Ball-&-socket joint= shoulder, hip • Only multiaxial joints (multidirectional movement) • Glenoid cavity + head of humerus; acetabulum + head of femur) • Gliding joint= carpal & tarsal bones, vertebrae, sternoclavicular carpal joints joints • • • Limited monaxial movement (amphiarthroses) ‘Flat or slightly curved’ articulating surfaces slide over each other Combine movement of several bones produces significant ROM • Hinge joint= elbow, knee, interphalangeal joint • Monaxial joints (1-directional plane) • Convex surface fits into concave depression of other bone • Trochlea + trochlear notch; condyles of femur + tibial condyles • Pivot joint= atlantoaxial jnt, proximal radioulnar jnt • Monaxial joints where 1 bone ‘spins’ on its longitudinal axis Synovial joints Synovial Movements of synovial joints Movements ** When in anatomical position, joint is in ‘zero position’ Flexion/extension • Hyperextension= greater than 180o Abduction/adduction (away/towards midline) Elevation/depression (vertical plane; clavicle) Protraction/retraction (horizontal plane; jaw) Circumduction (1 pt stays stationary, while distal end makes a circle) Lateral & medial rotation (femur, humerus, waist) Supination/pronation (hands & feet only) Opposition/reposition (thumbs only, thumb to finger tips) Dorsiflexion/plantar flexion (feet only…toes up, toes down) Dorsiflexion/plantar only…toes...
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