Bone
Attaching Structures as Origin
- Dorsal Metacarpal Ligaments - Posteriorly between the 4th and 5th Metacarpal
- Palmar Metacarpal Ligaments - Anteriorly between the 4th and 5th Metacarpal
Attaching Structures as Insertion
- Dorsal Carpometacarpal Ligament
- Extensor Carpi Ulnaris - Tubercle on the Medial Side
- Flexor Carpi Ulnaris
- Palmar Carpometacarpal Ligament
- Pisometacarpal Ligament