Orthopedics Hip, Knee, and Shoulder Injuries Forum - Geometry of Condyloid Joint Between Metacarpal And Phalanx Bones


Geometry of Condyloid Joint Between Metacarpal And Phalanx Bones

Medical Questions-> Health Forums -> Orthopedics Hip, Knee, and Shoulder Injuries -> Geometry of Condyloid Joint Between Metacarpal And Phalanx Bones

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nottoooily

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Joined: 17 Nov 2007
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Geometry of Condyloid Joint Between Metacarpal And Phalanx Bones Posted: 11-17-07 05:28am


How does the geometry of this joint work? I understand it has ovoid and elliptical surfaces, but not how they move wrt each other. Is there only sliding, only rolling, or both? Are the extension/flexion movements equivalent to simply rotating about the center of curvature of the "ball" on the metacarpal? How about the sideways movement? Is this joint funtamentally different from an arthrodial, hinge or ball-and-socket joint? Cheers.

rooted

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Posted: 11-19-07 14:42pm


Is this for a homework assignment? This type of joint allows movement but no rotation. It is a "gliding joint". Yes, it is fundamentally different ... http://www.fotosearch .com/LIF125/3d503006/

nottoooily

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Joined: 17 Nov 2007
Posts: 2

Posted: 11-19-07 23:56pm

Hi, thanks for the reply, but I've seen a few descriptions of it and they're all as vague as that link. This is the joint on the knuckles so it does rotate. I'm looking for a more quantitative description of the possible movements it can make for a typical person.

rooted wrote:

Is this for a homework assignment?

This type of joint allows movement but no rotation. It is a "gliding joint".
Yes, it is fundamentally different ...

http://www.fotosearch .com/LIF125/3d503006/

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