saddle joint


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Related to saddle joint: Condyloid joint, plane joint

saddle joint

saddle joint
1. A stepped joint in a projecting masonry course or in a coping; used to prevent the penetration of water.
2. A vertical joint in sheet-metal roofing; formed by bending up the end of one sheet and folding it downward over the turned-up edge of the adjacent sheet.
References in periodicals archive ?
The bony volar beak of the metacarpal became recontoured into the smooth saddle joint, and the surrounding ligaments became the dominant stabilizing force of the joint during pinching activities.
It is a combination of a hinge joint- between the femur and tibia and a saddle joint between the tibia and fibular.
Unlike the hinge-type joints that dominate the hand, the trapeziometacarpal or basal joint of the thumb is a uniquely structured biconcave-convex saddle joint. Because of the paucity of bony constraints, the caropometacarpal joint has to rely on the integrity of ligaments for its stability and because of the lack of osseous constraints, contact stresses within the basal joint are large with exceptional mobility of joint.