9-8-09 kinesiology handout

9-8-09 kinesiology handout - Types of Joints Diarthrodial...

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Types of Joints Diarthrodial - free moving o Ex: hip joint Synarthrodial - immovable (not moving) o Ex: skull Diarthrodial Joints Free moving Synovial joint space between the ends of 2 bones Synovial membrane and fluid - lubricates the joint True motion occurs Has a joint capsule - ligaments are structure around it to hold it together Bones are lines with hyaline cartilage Diarthrodial Movement Monoaxial Biaxial Triaxial Diarthrodial Movement - Monoaxial Movement Movement in 1 plane Also known as 1 degree of motion Joints – Ginglymus (hinge) and trochoid (pivot) Ex: Elbow and ankle – ginglymus - sagittal plane flexion/extension o Atlas and axis vertebrae and radioulnar – trochoid – supination/pronation Diarthrodial Movement - Biaxial Movement
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Movement in 2 planes Movement – flexion/extension and abduction/adduction 2 degrees of motion Joint – condyloid (ovoid) Ex: Wrist o Metacarpophalangeal joints of the fingers Diarthrodial Movement - Triaxial Movement Movement in 3 planes Shoulder - transverse, sagittal, and frontal planes Movement – flexion/extension and abduction/adduction Joint – ball and socket Ex: Hip o Shoulder Joints - Diarthrodial Gliding Ginglymus Trochoid Bicondylar Condyloid Saddle Ball and socket Diarthrodial Joints - Gliding Gliding or irregular Also called arthrodia
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Wrist or ankle (carpals or metacarpals and tarsals or metatarsals) Non–axial only gliding motion Zero or infinite degree of motion Diarthrodial Joints - Trochoid Also called pivot Uniaxial – rotates around 1 plane Movement – supination/pronation Proximal radioulnar joint Radioulnar - Head of the radius pivots on the radial notch of the ulna Atlas and axis
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Diarthrodial Joints - Ginglymus Also called hinge joint Uniaxial – moves around 1 plane Flexion/extension 1 degree of motion Elbow; ankle Diarthrodial Joints - Bicondylar A joint in which 2 rounded surfaces of one bone articulate with shallow depressions on another bone One bone is concave and one is semi-concave Uniaxial plus – flexion/extension and partial rotation or gliding 1+ degree of motion
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9-8-09 kinesiology handout - Types of Joints Diarthrodial...

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