Bone
Attaching Structures as Origin
- Adductor Pollicis - Oblique Head
Attaching Structures as Insertion
- Dorsal Carpometacarpal Ligament
- Dorsal Metacarpal Ligaments - Posteriorly between the 2nd and 3rd Metacarpal
- Extensor Carpi Radialis Longus - Posterior Surface
- Flexor Carpi Radialis - Palmar Surface
- Palmar Carpometacarpal Ligament
- Palmar Metacarpal Ligaments - Anteriorly between the 2nd and 3rd Metacarpal