Compliance and viscoelasticity of canine shoulders loaded in vitro.
Humeral and scapular components of normal canine shoulders were used to load each other in a special testing jig permitting measurement of subchondral plate deflection on each side of the joint. In eleven shoulders, at three loading rates, the humeral compliance (mu deflection kg load-1) was always greater than that of the glenoid fossa (geometric mean ratio = 6.0). On sustained compression, there was prominent stress relaxation most suggestive of intraosseous hydraulic flow.
D000818:Animals; D003187:Compliance; D004285:Dogs; D004548:Elasticity; D005260:Female; D066298:In Vitro Techniques; D008297:Male; D010827:Physiology / Q000295:instrumentation; D011859:Radiography; D012785:Shoulder Joint / Q000000981:diagnostic imaging / Q000502:physiology*; D013314:Stress, Mechanical