wrist and hand ligaments Flashcards
name the 2 wrist collateral ligaments
Radial carpal collateral: radial stypoid process to scaphoid and trapezium (limit ulnar dev)
Ulnar carpal collateral: ulnar styloid process - triquetrum, pisiform (limit radial dev)
Dorsal radiocarpal ligament
3 bands: all from dorsal radius to triquetrum, lunate, scaphoid
limit wrist flexion
Palmar radiocarpal ligament
3 bands: all from styloid process of radius to capitate, lunate, and scaphoid
limit wrist extension and ulnar dev
Palmar ulnocarpal ligament
2bands: from styloid process of ulna to lunate and triquetrum
limit extension and radial dev
Dorsal intercarpal ligaments function and location?
- between carpal bones
- capsular reinforcement
- can extend to several carpal bones
palmar intercarpal ligaments function and ligaments?
- basically the floor of the flexor retinaculum
- capsular reinforcement
4 carpometacarpal ligaments are ?
- Palmar metacarpal
- palmar carpometacarpal
- -> these are all capsular reinforcements
- dorsal metacarpal
- dorsal carpometacarpal
- -> these all reinforce the joint capsule
1st CMC JOINT description….
- saddle joint - biplanar
- articulation = trapezium and 1st mC
- Sagittal plane = ADD/ABD
- Frontal plane = Flexion and extension
- Opposition
name the 3 types of metacarpophalangeal ligaments
- collateral
- MCP palmar
- Transverse MC
what are the three collateral MCP ligaments? and function?
- MCP collateral, Proximal IP collateral, Distal IP collateral
- lax in extension
- taut in flexion
- triangular in nature
MC-Phalangeal palmar ligaments aka?
Volar plate
what are the 3 MCP palmar ligaments? and function?
- MCP palmar, PIP palmar, DIP palmar
- limit hyper extension and prevent impingement of flexor tendons in flexion
- made of fibrocartilage
What is function of transverse MC ligament?
- Binds MC heads
- Prevents separtion of MCs
