1st Carpometacarpal Joint

Parent Structures

• Joints of the Hand

Joint Classification

• Saddle
• Synovial

Joint Actions

• Abduction
  • Innervator
    • C8
    • T1
  • Agonist
    • Abductor Pollicis Longus
    • Abductor Pollicis Brevis
• Adduction
  • Innervator
    • C8
    • T1
  • Agonist
    • Adductor Pollicis
• Opposition
  • Innervator
    • C8
  • Agonist
    • Opponens Pollicis

Bones

• 1st Metacarpal
• Trapezium

Articulating Surfaces

• Base of 1st Metacarpal

Ligaments

• Anterior Oblique Ligament of 1st Carpometacarpal Ligament
• Posterior Oblique Ligament of 1st Carpometacarpal Ligament
• Radial Carpometacarpal Ligament