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CONDYLOID JOINT oval-shaped condyle of one bone fits into an elliptical cavity of another. Ex. Metacarpals and phalanges Rotational movement is not possible. GLIDING JOINTS Nearly flat, slightly curved Wrist, ankle, vertebrae Allow sliding and twisting. HINGE JOINT
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CONDYLOID JOINT • oval-shaped condyle of one bone fits into an elliptical cavity of another. Ex. Metacarpals and phalanges Rotational movement is not possible
GLIDING JOINTS • Nearly flat, slightly curved • Wrist, ankle, vertebrae • Allow sliding and twisting
HINGE JOINT • Convex surface of one bone fits into the concave surface of another. • Ex. Elbow, phalanges
PIVOT JOINT • Cylindrical surface of one bone rotates within a ring formed of bone and ligament. • Rotation around a central axis. • Ex. Proximal end of radius and the ulna.
SADDLE JOINT • Between bones whose articulating surfaces have both concave and convex regions. • Carpal and metacarpal bones of the thumb.
http://faculty.stcc.edu/AandP/AP/AP1pages/Units5to9/joints/synovial.htmhttp://faculty.stcc.edu/AandP/AP/AP1pages/Units5to9/joints/synovial.htm
JOINT MOVEMENTS Flexion: bending parts at a joint so that the angle between them decreases and the parts come closer together. Extension: straightening parts at a joint so that the angle between them increases. Dorsiflexion: bending the foot at the ankle toward the shin.
Plantar flexion: bending the foot at the ankle toward the sole. Hyperextension: excess extension of the parts at a joint, beyond the anatomical position (bending the head back beyond the upright position).
Abduction: moving a part away from the midline. Adduction: moving a part toward the midline. Rotation: moving a part around an axis. Circumduction: moving a part so that its end follows a circular path. Pronation: turning the hand so that the palm is facing downward or posteriorly. Supination: turning ht hand so that the palm is facing upward.
Eversion: turning the foot so that the sole faces laterally. Inversion: turning the foot so that the sole faces medially. Retraction: moving a part backward. Protraction: moving a part forward. Elevation: raising a part. Depression: lowering a part.