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Hand Injuries Sports Medicine 1 Daily Objectives • Content Objectives • List the anatomical structures responsible for movement of the hand and phalanges. • Gain knowledge regarding fractures of the hand. • Language Objectives • Read assigned pages in textbook. • Copy notes off of power point • Complete the Double Bubble Map 2 Warm-Up • How many bones are in the wrist and hand? This includes the carpal bones also. 3 Boney Anatomy of the Hand and Wrist • Contains __ Bones • Fourteen (____) Phalanges • Five (___) Metacarpals • Eight (____) Carpals ***The pisiform bone is not shown in this view.*** 4 Carpal Bones • • • • • • • • • • Proximal Row (L-R) Scaphoid Lunate Triquetral Pisform Distal Row (L-R) Trapezium Trapezoid Capitate Hamate 5 Articulations of The Hand • Three different articulations • __________________ • __________________ • __________________ • Supported by ligaments and capsular tissues. 6 Movements of the Wrist and Hand • • • • • • • • • • • • Wrist Flexion Wrist Extension Radial Deviation Ulnar Deviation Finger Flexion Finger Extension Finger Abduction Finger Adduction Thumb Flexion Thumb Extension Thumb Abduction Opposition 7 Muscles Within The Hand • _________ Muscles (Originate in the Hand) • Responsible for _________ movements. 8 Muscles that Move The Hand • ____________ Muscles (Originate in the forearm) • Responsible for ______ motor movements. 9 10 11 Nerve Supply of the Hand • Nerve Inneravtion • __________ Nerve # 3 • __________ Nerve #2 • ___________ Nerve # 1 12 http://anatomy.med.umich.edu/atlas/hand_cut1.html Blood Supply to the Hand • Blood Supply • _________ Artery • _________ Artery 13 www.ptca.org/radial/interview_jobe.html Regions of the Hand __________Eminence __________Eminence 14 Injury Information • Very Common in Athletics • Injuries can be of a large variety • Fractures • Sprains and Dislocations • Tendon Strains and Ruptures • Often occurring in the following sports: • Baseball • Softball • Basketball • Football 15 16 Pace Lap • What is the difference between the intrinsic muscles of the hand and the extrinsic muscles of the hand? 17 Assignment • Read pages 434-436 and complete the following. • Why do athletes have a greater risk of injury to the hands ? • What two anatomical structures set humans apart from other animals? • Complete a Double bubble map comparing and contrasting a mallet finger with a jersey finger. • Where is the anatomical snuffbox located, and why is it significant when evaluating a hand injury? • What is a Colles’s Fracture? 18 Finger Fracture • Can involve any phalange. • Proximal, Middle, or Distal Phalange. • Needs to evaluated by a physician • Most can be treated with splints or buddy tape. • Displaced or open fractures will need to be surgically repaired. 19 orthoinfo.aaos.org/topic.cfm?topic=A00010 Mallet Finger • Injury to the ___________tendon of the distal interphalangeal joint of the finger. • Gives the ____ joint an appearance of a mallet. 20 Mallet Finger • AKA: Baseball Finger • Involves the __________ Digitorum Tendon. (___________) • Mechanism of Injury • Tip of the finger gets hit exactly as it is being extended from a flexed position. • The extensor digitorum is taught and simultaneously forced into ___________. • This results in an avulsion of the tendon away from it’s insertion at the base of the distal phalange. 21 Signs and Symptoms • Deformity of the _____ joint. • Inability to extend the DIP joint. • Obvious deformity of the DIP joint • Recent trauma to the fingertip • Point tenderness on the _________ surface of the distal phalange where the ED muscle attaches. 22 Treatment • Rest • Ice • Splint in full ___________ • Refer to physician http://www.allegromedical.com physio-med.com 23 Jersey Finger • Also involves the tearing of a finger tendon away from the bone. • The ________ digitorum profundus (FDP) tears away from its attachment on the distal phalange. 24 Jersey Finger • Mechanism of Injury • Catching a finger in an opponents clothing • Signs and Symptoms • __________ to flex the ____ joint. • Athlete reports having felt something “pop or snap” in the fingertip. • Point tenderness on the ________ (palmar) surface of the distal phalange. 25 Treatment • Rest • Ice • Splint in slight Flexion • Refer to physician immediately • This will require surgery. 26 Colles’s Fracture • Fracture of the ___________radius. • Mechanism of Injury • Forced wrist ___________. Usually from trying to break a fall. • Signs and Symptoms • Obvious deformity over the distal radius. • Pain with forearm pronation/supination, and wrist flexion/extension. (________________________) • Athlete will have felt a “pop” or “snap”. • Treatment • Ice • Splint • Refer to physician 27 Colles’s Fracture 28 http://www.feinberg.northwestern.edu/emergencymed/residents/ort ho-teaching/case52/case52background.html Scaphoid Fracture • Fracture of the ___________-bone • Mechanism of Injury • Forced wrist hyperextension. Usually from trying to break a fall. • ___________ • Signs and Symptoms • Point tenderness in the _________________ ___________________. • Athlete remembers feeling a “_______” or “_________” • Pain with all wrist movements • Treatment • Ice • Splint • Refer to physician 29 Scaphoid Fracture 30 Anatomical Snuffbox 31 http://commons.wikimedia.org/wiki/File:Anatomical_snuffbox. JPG Bennett’s Fracture • Fracture or fracturedislocation of the proximal end of the first metacarpal bone away from the trapezium. • Mechanism of Injury • ___________ something with a _____________ fist. 32 Signs and Symptoms • Recent history of trauma. • Obvious deformity • __________ thumb compared to the opposite hand. • Swelling over the first proximal metacarpal. 33 Boxers Fracture • Fracture of the ________and/or _______ metacarpal. 34 Boxers Fracture • More common than Bennett’s fracture • Mechanism of Injury • Striking something with a clinched fist • Crushing force • Signs and Symptoms • Recent history of trauma • Pain and swelling over the distal fourth and/or fifth metacarpal. • _____________ deformity 35 Treatment • Apply Ice • Splint • Buddy Tape (Anatomical Splint) • Board Splint • Elevate • How?? • Refer to physician 36 Reading Assignment • Read the section titled “ Boutonniere Deformity” on pages 438-445 and complete the following: 1. What is gamekeepers thumb? 2. What is Carpal Tunnel Syndrome? 3. Which nerve is involved in Carpal Tunnel Syndrome? 4. Define Ganglion Cysts. 5. What is a boutonniere deformity? 6. How does this differ from a mallet finger? 7. What articulation is involved with a boutonniere deformity? 37 Gamekeepers Thumb • Term originated in the 1950’s describing an injury to gamekeepers. • Injury to the Ulnar collateral ligament of the 1st MCP joint. 38 Gamekeepers Thumb • May also be called Skiers Thumb • ______ of these injuries occur in conjunction with an __________ fracture of the _________ phalange. 39 Gamekeepers Thumb • Mechanism of Injury • __________ force applied to the lateral aspect of the 1st MCP joint. • Signs and Symptoms • Significant point tenderness over 1st MCP joint. • Athlete will report having felt a “_______” in his/her thumb. • Significant swelling over the 1st MCP joint and _______________ ____________. 40 Carpal Tunnel Syndrome • An _________ disorder caused by inflammation of the tissues and __________ surrounding the _____________ nerve as it passes through the carpal tunnel. • _______________ Tunnel: A passage way that runs from the forearm through the wrist. • Mechanism of Injury • __________ • Signs and Symptoms • Pain, numbness, tingling, and weakness in the wrist, hand, and fingers. • Treatment • RICE • Surgical decompression of the carpal tunnel. 41 Carpal Tunnel http://www.srcpt.com/blog/ 42 Ganglion Cyst • A small hard lump above a tendon or in the __________ that encloses a joint. 43 Boutonniere Deformity Anatomy • _________ Bands of the extensor digitorum tendon. • Lateral (2) • Central • Proximal Interphalangeal Joint (______) • Allows for full flexion of the PIP joint. 44 Boutonniere Deformity • Tearing of the ______ band of the ___________tendon. • Mechanism of Injury • Forced finger _______ while the fingers are in a flexed position trying to extend. 45 Boutonniere Deformity • If not treated the PIP joint will pop through the ________ portion of the torn extensor tendon. • This results in flexion at the PIP joint and hyperextension at both _____ and _______ Joints 46 Signs and Symptoms • Athlete will report feeling a “____________” associated with forced finger flexion. • Significant weakness with ______ extension. • Painful and swollen ____ joint. • If unattended there will be an obvious ___________ develop. 47 Treatment • Ice • Referral for x-ray to determine no avulsion • Splint 48 Scenario Assignment • As softball player reports to the athletic training room complaining of pain in her 3rd distal phalange of her throwing hand. She states that when she tried to catch a ground ball she put her throwing hand in front of the glove (bad idea), and the ball hit the end of her fingertip. She reports feeling a “pop” and immediate pain over her dorsal DIP joint. There is mild swelling and the athlete can no longer extend the DIP joint of her finger. *What type of injury are you most likely dealing with? *How are you going to treat this? *Is this going to affect her swimming career? 49