GROSS ANATOMY
UPPER LIMB JOINTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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palmar
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collateral
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deep transverse metacarpal
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dorsal
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superficial transverse
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Detailed explanation-1: -There are two main supporting ligaments traversing the metacarpophalangeal (MCP) joint of the thumb: the ulnar and radial collateral ligaments. Injuries to these ligaments can lead to symptomatic joint instability with subsequent pain, weakness and arthritis if ignored.
Detailed explanation-2: -The joint capsule surrounds the MCP joint blending with the palmar plate and the collateral ligaments. It functions to stabilize the joint dorsally and is taut in joint flexion.
Detailed explanation-3: -The metacarpophalangeal (MP or MCP) joint, also known as “the knuckle, ” is formed by the articulation of the metacarpal head and proximal phalanx. This multiaxial joint allows flexion and extension as well as abduction and adduction motions.
Detailed explanation-4: -Palmar ligament They are loosely attached to the palmar aspect of the metacarpal neck, but firmly adhered to the palmar surface of the base of the adjacent proximal phalanx.