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UNIT 4 WRIST AND HAND JOINTS AND LIGAMENTS
Unit 4 Wrist and Hand Joints and Ligaments PTAP 125 Winter 2010
27
Biology
Undergraduate 1
02/28/2010

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Term
RADIOCARPAL JOINT
Definition
articulation b/w radius and proximal carpals; biaxial, condyloid joint filled with synovial fluid (AKA wrist joint)
Term
LIGAMENTS THAT SUPPORT THE RADIOCARPAL JOINT
Definition
medial (ulnar collateral ligament), lateral (radial) collateral ligament
Term
MEDIAL COLLATERAL LIGAMENT (WRIST)
Definition
connects the ulnar styloid to the triquetrum and hamate; limits radial deviation
Term
LATERAL COLLATERAL LIGAMENT (WRIST)
Definition
connects the radial styloid to the scaphoid and trapezium; limits ulnar deviation
Term
MIDCARPAL JOINTS
Definition
articulation b/w the proximal and distal row of carpals; non-axial, plane joints – gliding movements of the carpals bones
Term
LIGAMENTS THAT SUPPORT THE MIDCARPAL JOINT
Definition
dorsal intercarpal ligament, palmar intercarpal ligament
Term
DORSAL INTERCARPAL LIGAMENT
Definition
connects radius to the proximal carpals posteriorly; stabilizes carpals during wrist flexion
Term
PALMAR INTERCARPAL LIGAMENT
Definition
connects radius to proximal carpals anteriorly; stabilizes carpals during wrist extension
Term
CARPOMETACARPAL (CMC) JOINT
Definition
articulation b/w the distal row of carpals and the metacarpals; biaxial, modified saddle
Term
EXTRA MOBILITU OF 5TH CMC JOINT ALLOW
Definition
finger opposition
Term
LIGAMENT THAT SUPPORT THE CMC JOINT
Definition
dorsal metacarpal ligaments
Term
DORSAL METACARPAL LIGAMENTS
Definition
connects the carpals to the metacarpals
Term
INTERMETACARPAL JOINTS
Definition
articulation b/w metacarpals
Term
LIGAMENT THAT SUPPORT THE INTERMETACARPAL JOINT
Definition
dorsal intermetacarpal ligaments
Term
DORSAL INTERMETACARPAL LIGAMENT
Definition
connects metacarpal to metacarpal
Term
METACARPOPHALANGEAL (MCP) JOINT
Definition
articulation b/w the metacarpals and the proximal phalanx; thumb – uniaxial hinge, fingers - biaxial, condyloid
Term
LIGAMENTS THAT SUPPORT THE MCP JOINT
Definition
medial (ulnar) collateral ligament, lateral (radial) collateral ligament
Term
MEDIAL COLLATERAL LIGAMENT (MCP)
Definition
connects the metacarpal to the proximal phalanx medially
Term
LATERAL COLLATERAL LIGAMENT (MCP)
Definition
connects the metacarpal to the proximal phalanx laterally
Term
LIGAMENTS THAT SUPPORT PIP
Definition
medial (ulnar) collateral ligament, lateral (radial) collateral ligament
Term
MEDIAL COLLATERAL LIGAMENT (PIP)
Definition
connects proximal phalanx to middle phalanx medially
Term
LATERAL COLLATERAL LIGAMENT (PIP)
Definition
connects proximal phalanx to middle phalanx laterally
Term
DISTAL INTERPHALANGEAL JOINT (DIP)
Definition
articulation b/w middle and distal phalanx; uniaxial, hinge
Term
LIGAMENTS THAT SUPPORT THE DIP JOINT
Definition
medial (ulnar) collateral ligament, lateral (radial) collateral ligament
Term
MEDIAL COLLATERAL LIGAMENT (DIP)
Definition
connects the middle phalanx to distal phalanx medially
Term
LATERAL COLLATERAL LIGAMENT (DIP)
Definition
connects the middle phalanx to distal phalanx laterally
Term
INTERPHALAGEAL (IP) JOINT
Definition
articulation b/w proximal phalanx and the distal phalanx of thumb; uniaxial, hinge
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