1 / 22

Hand and Wrist

Hand and Wrist. Forearm Anatomy. Radius Ulna Carpal Bones Metacarpals Phalanges-Inter-phalageal joints(IP) are proximal and distal and the metacarpal-phalangeal joints are (MCP). Carpal Bones. Navicular (Scaphoid) “Anatomical Snuff Box” Lunate Triquetrium Pisiform Trapezium Trapezoid

Download Presentation

Hand and Wrist

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Hand and Wrist

  2. Forearm Anatomy • Radius • Ulna • Carpal Bones • Metacarpals • Phalanges-Inter-phalageal joints(IP) are proximal and distal and the metacarpal-phalangeal joints are (MCP)

  3. Carpal Bones • Navicular (Scaphoid) “Anatomical Snuff Box” • Lunate • Triquetrium • Pisiform • Trapezium • Trapezoid • Capitate • Hamate

  4. Motions of the Hand • Flexion • Extension • Ulnar Deviation (Adduction) • Radial Deviation (Abduction) • Supination • Pronation

  5. Muscles of the Hand (Flexors) • Flexor Carpi Ulnaris- flexes wrist and fingers • Flexor Carpi Radialis- flexes wrist and fingers • Flexor Policis Longus- flexes thumb • Palmaris Longus- flexes fingers

  6. Muscles of the Hand (Extensors) • Extensor Carpi Ulnaris- extends wrist and fingers • Extensor Carpi Radialis- extends wrist and fingers • Extensor Digitorum Longus- estends fingers • Extensor Digiti Minimi- extends pinky finger

  7. Pronators and Supinators • Pronator Teres • Supinator Teres

  8. Muscles of the Forearm

  9. Injuries to the Wrist and Hand • Forearm Splints • Interosseus membrane between radius and ulna stretches, retinaculum may also be injured. • Wrist Fracture • Colles fracture: to distal end of the radius and/or ulna. Anytime the wrist is injured an x-ray is needed. Radiating pain up the arm and shaft of the humerus is a reason to x-ray along with pain in the anatomical snuff box. With a Colles fx there is pain with flexion and radial deviation and supination is impossible

  10. Colle’s Fracture

  11. Navicular Fracture • Highest no-union rate of all the bones in the wrist • Highest fracture rate of all the bones in the wrist • Blood supply is limited so the healing process is lengthened sometimes never heals without aid

  12. Navicular Fracture

  13. Lunate Fracture • Carpal bone that commonly dislocates • Most common cause is falling on an outstretched arm and hand • Dislocation is forward and painful

  14. Gamekeepers Thumb • This is a sprain or avulsion of the ulnar collateral ligament on the thumb. • Can be braced for healing or sometimes needs surgical intervention.

  15. Carpal Tunnel Syndrome • Tendons become inflammed and the swelling puts pressure on the nerves • Causes pain and malfunction of the hand • Pain can radiate up the arm • Tingling numbness felt in the fingers • Weakness with flexion pain increases at night • Treatment is wrist splint or surgical intervention

  16. Ganglion Cyst • Tendon becomes inflammed sheath herniates causing a fluid filled sac • Surgical Excision

  17. Metacarpal Fracture • Boxers Fracture to 5th metacarpal • Compare domes of the knuckles while making a fist • Tends to heal rapidly

  18. Boxer’s Fracture

  19. Ligament Sprain • Tends to occur to the MP and IP joints • Joints are jammed and causes the capsule to swell

  20. Avulsion Fracture • Could be called “Mallet Finger” • Extensor Tendon torn with bone avulsion in some cases

  21. Bennett’s Fracture • This is where the extensor tendon pulls off the distal end of the thumb

  22. Dislocated Thumb • Never reduce this injury because of the high nerve supply. • MEDICAL EMERGENCY

More Related