Categorieën: Alle - anatomy

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Wrist

The human wrist comprises several intricate components, including bones, tendons, nerves, and ligaments, each contributing to its complex function. The extensor tendons, such as the extensor pollicis longus and extensor digitorum, play crucial roles in wrist and finger movements.

Wrist

Wrist

Compartments

Carpal Tunnel

Carpals

Tendon of Flexor Pollicis Longus

Tendon of Flexor Digitorum Superficialis

Tendon of Flexor Digiitorum Profundus

Median Nerve

Guyon's Canal
Contents

Hook of Hamate

Ulnar artery

Ulnar nerve

Floor

Flexor Retinaculum

Roof

Palmar Carpal Ligament

Extensor
6.
5.

Extensor Digiti Minimi

4.

Extensor Indicis

Extensor Digitorum

3.

Extensor Pollicis Longus

Uses Lister's tubercle as a pulley

2.
1.

Extensor pollicis brevis

Abductor pollicis Longus

Innervation

Dorsal and Deep Branches of Ulnar nerve
Posterior interosseous branch of Radial nerve
Anterior interosseous branch of median nerve

Movements

Adduction
Abduction
Extensor carpi Radialis Longus
Abductor Pollicis Longus
Extension
Extensor Carpi Ulnaris
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Flexion
Flexor Carpi Ulnaris
Flexor Carpi Radialis

Clinical correlates

Intersection syndrome
Radiocarpal arthritis
Carpal tunnel syndrome
De Quervain Tenosynovitis
Dislocation of Lunate
Most commonly dislocated carpal bone
Fracture of Scaphoid
Most commonly fractured carpal bone
Radioulnar synostosis
Smith's Fracture
Colles Fracture

Articulation

Palmar radiocarpal ligaments
Dorsal radio carpal ligaments
Ulnar collateral ligament
Radial collateral Ligament
Intercarpal
Pisotriquetral joint
Midcarpal Joint

Between Proximal and Distal Carpals

Scapholunate Joint
Lunocapitate Joint
Lunohamate joint
Lunotriquetrium Joint
Scaphotrapezium Joint
Scaphotrapezoid Joint
Scaphocapitate joint
Scapholunate joint
Radio-carpal (Wrist) joint
Condyloid synovial joint

Radio-lunate joint

Radio- Scaphoid Joint

Radial Styloid Process
Distal Ulna
Rotates about the fixed ulna
Distal Radio-Ulnar Joint

Ulnar notch

Blood Supply

Posterior Interosseous Artery
Anterior Interosseous artery
Ulnar Artery
Radial Artery
Dorsal Carpal arch
Superficial palmar arch

Osteology

Distal ulna
Distal Radius
Carpal Bones
Distal Carpals

Hamate

Capitate

Trapezoid

Trapezium

Proximal Carpals

Pisiform

Triquetrum

Lunate

Scaphoid