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1、1,Arthrology,Xuegang Luo,Department of Anatomy Biaxial movements Example Carpometacarpal joint of the thumb,29,4.3.1 Ball and Socket Joint,Ball fitting into a cuplike depression Multiaxial flexion/extension abduction/adduction rotation Examples shoulder joint hip joint,30,4.3.2 Planar Joint,Bone sur
2、faces are flat or slightly curved Side to side movement only rotation prevented by ligaments Examples intercarpal or intertarsal joints sternoclavicular joint vertebrocostal joints,31,IV. Shoulder Joint,Head of humerus and glenoid cavity of scapula Ball and socket All types of movement,1. Compositio
3、n,32,Articular capsule from glenoid cavity to anatomical neck Glenoid labrum deepens socket Many bursa nearby the joint (subacromial),2. Structures,33,3. Ligaments,Associated ligaments and muscles strengthen joint capsule Transverse humeral ligament holds biceps tendon in place,34,IV. Hip Joint,Head
4、 of femur and acetabulum of hip bone Ball and socket type of joint All types of movement possible,1. Composition,35,Acetabular labrum Ligament of the head of the femur Articular capsule,2. Structures,36,3. Ligaments,Dense, strong capsule reinforced by ligaments iliofemoral ligament pubofemoral ligament ischiofemoral ligament One of strongest structures in the body,37,Tab. 1: Comparison of the Structures between Hip and Shoulder Joints,Joint,SD,Capsule,Lig.,Hip Small dense strong 3 A limited bigger,Stability,Shoulder large loose weak 3 A unlimited smaller,Mov.,Range,38,Thank you!,