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KIN 191B – Advanced KIN 191B – Advanced Assessment of Upper Assessment of Upper
Extremity InjuriesExtremity Injuries
Wrist, Hand and Finger Evaluation and Pathologies
HistoryHistory
HistoryHistory
Location of painMechanism of injury/etiologyUnusual sounds/sensationsOnset/duration and description of
symptomsPrior history/general health concerns
Location of PainLocation of Pain
Generally, local injury represented by local symptoms – sometimes difficult to identify specific structure/s
Must be aware of possible referred pain from cervical, shoulder and/or elbow pathologies
Mechanism of InjuryMechanism of Injury
Direct trauma
Hyperextension/hyperflexion injuries of wrist and/or fingers
Insiduous onset increases likelihood of chronic conditions
Identify factors which increase or decrease symptoms
Unusual Sounds or SensationsUnusual Sounds or Sensations
Numbness/tingling indicative of neurological pathology – must establish if local or referred
Fractures, dislocations and tendon ruptures often accompanied by “popping” sensation
Some overuse conditions (tendonitis) may present with “snapping” sensation
Onset/Duration and Description Onset/Duration and Description of Symptomsof Symptoms
Type of pain (ache, throb, etc.)
Intensity of pain (objectify)
Immediate vs. gradual onset of symptoms
Changes in symptoms (better, worse)
Prior History and General Prior History and General Health ConcernsHealth Concerns
Any previous injury, especially if neurological in nature, may have lasting effect on function, etc.
Hand is typically first part of body to be affected by:– Arthritis– Peripheral vascular disease (PVD)
Insufficient vascular structures to provide adequate circulation– Raynaud’s phenomenon
Reaction to cold temps – alternating bouts of pallor and cyanosis (vascular responses)
Inspection/ObservationInspection/Observation
Inspection/ObservationInspection/Observation
General inspection
Inspection of wrist and hand
Inspection of thumb and fingers
General InspectionGeneral Inspection
Hand posture– Relaxed normal hand is slightly flexed with subtle
palmar arch Gross deformity
– Associated with fractures and/or dislocations Palmar creases
– May not be visible if severe swelling Cuts, scars, lacerations
– Superficial nature of neurovascular structures makes them susceptible to injury even with superficial wounds
Inspection of Wrist and HandInspection of Wrist and Hand
Distal radioulnar continuityCarpal and metacarpal continuity/contourMP joint alignment
– Depressed knuckle = Boxer’s fractureWrist and hand posturing
– Neurovascular conditions may prompt abnormalities (drop wrist, Volkmann’s ischemic contracture)
Inspection of Wrist and HandInspection of Wrist and Hand
Ganglion cyst– Defined as benign
collection of thick fluid within a tendinous sheath or joint capsule
– Most commonly found in wrist and hand
– Painful with motions that impinge upon when symptomatic
Inspection of Thumb and FingersInspection of Thumb and Fingers
Skin and fingernails– Subungual hematoma– Paronychia – infection at nail periphery– Felon – infection/abscess at or distal to DIP
Finger alignment and deformity– If finger out of alignment, may be spiral fracture of
phalanx/metacarpal– Secondary to fracture, dislocation or tendon injury
Skin and Fingernail Skin and Fingernail ConditionsConditions
PalpationPalpation
PalpationPalpation
Wrist and finger flexors
Wrist and finger extensors
Bony anatomy– Non-carpal bones– Carpal bones
Ligamentous and intrinsic muscular structures
Wrist and Finger FlexorsWrist and Finger Flexors
Flexor carpi ulnaris tendon
Flexor carpi radialis tendon
Tendons of finger flexors– Superficialis vs. profundus
Palmaris longus tendon
Wrist and Finger ExtensorsWrist and Finger Extensors
Extensor digitorum tendons
Anatomical snuffbox– Extensor pollicis longus – medial (ulnar) border– Abductor pollicis longus and extensor pollicis
brevis – lateral (radial) border– Scaphoid - floor
Anatomic SnuffboxAnatomic Snuffbox
Non-Carpal Bony AnatomyNon-Carpal Bony Anatomy
Distal radius/radial styloid process
Lister’s tubercle (dorsal and distal radius)
Ulnar head/ulnar styloid process
Metacarpals
Phalanges
Carpal Bony AnatomyCarpal Bony Anatomy
Scaphoid– Floor of snuffbox, easier with ulnar deviation
Lunate– Typically aligned with 3rd metacarpal, distal to Lister’s
tubercle and flex wrist Triquetrum
– Just distal to ulnar styloid process Pisiform
– Small, rounded prominence at proximal aspect of hypothenar eminence in palm
Carpal Bony AnatomyCarpal Bony Anatomy
Trapezium– Between scaphoid and 1st metacarpal
Trapezoid– Base of 2nd metacarpal
Capitate– Move toward thumb from hamate, base of 3rd
metacarpal Hamate
– “hook” of hamate is large prominence at proximal hypothenar eminence on palm
Ligamentous and Intrinsic Ligamentous and Intrinsic Muscular AnatomyMuscular Anatomy
Radial collateral ligaments– Radiocarpal joint, MP/IP/PIP/DIP joints
Ulnar collateral ligaments– Ulnocarpal joint, MP/IP/PIP/DIP joints
Carpal tunnel (transverse carpal ligament)Thenar eminenceHypothenar eminence
Range of MotionRange of Motion
Range of MotionRange of Motion
Active/passive/resistive– Wrist
Flexion/extension, ulnar/radial deviation
– Thumb (carpometacarpal joint) Flexion/extension, abduction/adduction, opposition
– Fingers MP joints: flexion/extension, abduction/adduction IP/PIP/DIP joints: flexion/extension
Wrist Ranges of MotionWrist Ranges of Motion
Flexion – normally 80-90 degrees, firm end feel
Extension – normally 75-85 degrees, firm end feel
Radial deviation – normally 20 degrees, hard end feel (scaphoid on radial styloid)
Ulnar deviation – normally 35 degrees, firm end feel
Wrist Ranges of MotionWrist Ranges of Motion
Thumb Ranges of MotionThumb Ranges of Motion
Flexion – normally 60-70 degrees, soft end feel
Extension – 0 degrees, firm end feel
Abduction – 70-80 degrees, firm end feel
Adduction – 0 degrees, soft end feel
Opposition – flexion/adduction/rotation, touch thumb to little finger, firm end feel
Thumb MotionsThumb Motions
Finger Ranges of MotionFinger Ranges of Motion
MP joints– Flexion – 85-105 degrees, hard end feel (proximal
phalanges on distal metacarpal)– Extension – 20-30 degrees, firm end feel– Abduction/adduction – total of 20-25 degrees, firm end
feel IP/PIP/DIP joints
– Flexion – IP: 80-90 degrees, PIP: 110-120 degrees, DIP: 80-90 degrees, firm end feels except PIP is hard end feel (middle phalanges on proximal phalanges)
– Extension – 0 degrees, firm end feels
Ligamentous/Capsular TestingLigamentous/Capsular Testing
Ligamentous/Capsular TestingLigamentous/Capsular Testing
Carpal glide tests– Attempts to elicit abnormal glide of carpal bones
Varus/valgus stress tests (do at multiple joint positions)– Wrist
UCL limits radial deviation and flexion/extension RCL limits ulnar deviation and flexion/extension Can also assess with glide between radius/ulna and proximal
row of carpal bones– MP/IP/PIP/DIP joints
Thumb UCL is common injury site
Neurovascular EvaluationNeurovascular Evaluation
Neurological EvaluationNeurological Evaluation
Peripheral nerve distributions– Median, ulnar and radial nerve sensory and
motor functions
Nerve root level distributions– Dermatomes and myotomes
Vascular EvaluationVascular Evaluation
Radial artery
Capillary refill
Skin temperature and color
Allen test?
PathologiesPathologies
PathologiesPathologies
Wrist injuries
Hand injuries
Finger injuries
Thumb injuries
Wrist InjuriesWrist Injuries
Wrist sprains Triangular fibrocartilage complex (TFCC) injury Carpal tunnel syndrome Wrist fractures Scaphoid fractures Lunate/perilunate dislocations Neurological injuries
Wrist SprainsWrist Sprains Most common etiology is hyperflexion or
hyperextension (fall on outstretched arm)
Must rule out carpal fracture, neurological injury and TFCC injury before assessing as wrist sprain
Most common presentation involves limited ROM to all wrist movements due to pain, usually also presents with weakness – assess with radiocarpal and carpal glide tests - treated conservatively in nearly all cases
TFCC InjuryTFCC Injury
Sprain to ligamentous structures on dorsal and medial aspect of wrist – injury occurs acutely, but often not reported until later
Most common etiology is hyperextension with ulnar deviation
Presents with tenderness to dorsal medial wrist distal to ulna, limited ROM (especially radial and ulnar deviation), possibility of avulsion fracture
Must be referred to MD – often surgically repaired
TFCC InjuryTFCC Injury
Carpal Tunnel SyndromeCarpal Tunnel Syndrome
Compression of median nerve in carpal tunnel – must be able to differentiate from nerve root injury
Typically secondary to overuse conditions (tendonitis, etc.) but may be due to acute trauma
Most common presentation is neurological deficit/symptoms to median nerve distribution (sensory and motor)
Carpal Tunnel SyndromeCarpal Tunnel Syndrome
Evaluate with Tinel’s sign to carpal tunnel – positive if symptoms reproduced
Evaluate with Phalen’s test – wrist flexion for ~1 minute – positive if symptoms reproduced
Almost always treated conservatively initially with rest, splinting (night), NSAIDs
Failure of conservative measures can lead to surgery – resection of transverse carpal ligament
Phalen’s TestPhalen’s Test
Wrist FracturesWrist Fractures
Typically occur from fall on outstretched arm – must consider neurovascular implications
Colles’ fracture– Fracture of distal radius proximal to radiocarpal joint
with dorsal displacement of fracture
Smith’s fracture (reverse Colles’)– Fracture of distal radius proximal to radiocarpal joint
with palmar/volar displacement of fracture
Colles’ FractureColles’ Fracture
Smith’s FractureSmith’s Fracture
Scaphoid FractureScaphoid Fracture
Easily the most commonly fractured carpal bone
Most common etiology is hyperextension
Blood supply comes from distal aspect and fracture in mid-substance often compromises proximal blood supply – high incidence of non-union/malunion fractures
Scaphoid FractureScaphoid Fracture
Scaphoid FractureScaphoid Fracture
Common presentation is pain/tenderness to snuffbox, limited ROM due to pain (especially extension/radial deviation), decreased grip strength
Conservative management involves immobilization of wrist/thumb/forearm for 6-8 weeks, then progressive ROM/strengthening exercises
Surgical intervention occasionally done in acute situation, but usually after failed conservative approach
Perilunate and Lunate Perilunate and Lunate DislocationsDislocations
Hyperextension is mechanism of injury – leads to 2 dislocation types (progressive severity of injury): perilunate dislocation vs. lunate dislocation
Common presentation is either palmar or dorsal wrist pain/swelling, visible/palpable deformity, 3rd knuckle level with others, neurological symptoms (3rd finger)
Perilunate DislocationPerilunate Dislocation
Palmar/volar displacement of proximal row of carpal bones on lunate so that lunate is dorsal to the other bones
Rupture of palmar/volar radiocarpal ligaments and promimal row of carpals “stripped” away from lunate
May spontaneously reduce, but usually remains displaced
Perilunate DislocationPerilunate Dislocation
Lunate DislocationLunate Dislocation
Palmar/volar displacement of lunate relative to carpals (really vice versa – carpals displaced dorsally on lunate)
Further hyperextension forces ruptures dorsal radiocarpal ligaments and the carpals are subsequently displaced
May spontaneously reduce, but usually remains displaced
Lunate DislocationLunate Dislocation
Perilunate and Lunate Perilunate and Lunate DislocationsDislocations
If closed reduction is stable, immobilized in slight flexion for 6-8 weeks – regular re-evaluation to maintain reduction stability
Requires surgical stabilization if closed reduction not stable acutely or if conservative attempts fail
Neurological InjuriesNeurological Injuries
Median nerve – carpal tunnel syndrome
Ulnar nerve– Passes in tunnel of Guyon between hook of hamate and
pisiform, can be compressed
Radial nerve– Drop wrist syndrome from inability to extend
wrist/fingers if radial nerve injured
Hand and Finger InjuriesHand and Finger Injuries
Metacarpal fractures
Collateral ligament injuries
Posturing and deformities
Finger fractures
Dislocations
Metacarpal FracturesMetacarpal Fractures Etiology is direct trauma – injury to 4th and 5th are most
common– Boxer’s fracture: 5th metacarpal fracture with “depression or
shortening” of knuckle
Often reports of hearing/feeling “pop or snap” at time of injury
Common presentation is localized tenderness/swelling/crepitus, possible displacement, abnormal hand ROM, weakness to affected area
Boxer’s FractureBoxer’s Fracture
Metacarpal FracturesMetacarpal Fractures
Metacarpal FracturesMetacarpal Fractures
If no displacement, treat with cast immobilization for 4-6 weeks followed by progressive ROM/flexibility/strengthening
If displacement and/or fragmented, surgical intervention necessary to re-establish normal anatomical positioning – then treated same as conservative approach
Collateral Ligament InjuriesCollateral Ligament Injuries
Etiology is acute force applicationPresent with localized pain/swelling, ROM
limited due to pain/swellingVarus and valgus stress tests often not
informative unless 3rd degree injuryGenerally conservatively managed with
splint and symptomatic treatment
Posturing and DeformitiesPosturing and Deformities
Ape hand Bishop’s deformity Claw hand Dupuytern’s contracture Swan neck deformity Volkmann’s ischemic contracture Boutonniere deformity Trigger finger
Posturing and DeformitiesPosturing and Deformities
Ape hand– Median nerve inhibition resulting in thenar eminence
atrophy – inability to flex and oppose thumb Bishop’s deformity
– Ulnar nerve inhibition resulting in hypothenar eminence, interossei, and medial 2 lumbricale atrophy – 4th and 5th fingers assume flexed posture
Claw hand– Ulnar and median nerve pathology resulting in flexion
of PIP and DIP joints with associated extension of MP joints
Dupuytren’s ContractureDupuytren’s Contracture
Flexion contracture of MP and PIP joints from shortening/adhesions in palmar aponeurosis – most common at 4th and 5th fingers
Swan-Neck DeformitySwan-Neck Deformity
Flexion of MP and DIP joints with associated hyperextension of PIP joint – usually due to volar plate injury, but can have many causes
Volkmann’s Ischemic ContractureVolkmann’s Ischemic Contracture
Flexion contracture of wrist and fingers from decreased blood supply to forearm muscles secondary to fracture, dislocation or compartment syndrome
Boutonniere DeformityBoutonniere Deformity
Extension of MP and DIP joints with associated flexion of PIP joint – due to rupture of extensor tendon from middle phalanx causing it to slip laterally at PIP joint changing line of pull from extension to flexion
Trigger FingerTrigger Finger
“Locking” of ROM during finger flexion from adhesions in flexor tendon sheaths
With flexion movements, adhesions require additional effort to allow for flexion ROM
Tendon “release” often presents as an audible “snap” as finger moves into flexion
Trigger FingerTrigger Finger
Finger FracturesFinger Fractures
Distal phalanx most commonly fractured due to flexor/extensor tendon attachments (avulsion) and crushing trauma
Middle phalanx uncommonly injuredProximal phalanx injury usually not isolated
and has associated tendon and/or skin injuryPresentation and treatment similar to
metacarpal fracture discussion
Finger FractureFinger Fracture
Finger FracturesFinger Fractures
Avulsion fractures of the fingers– Mallet finger
Avulsion of extensor tendon from distal phalanx, inability to actively extend DIP joint (passive OK), commonly occurs if fingertip hits ball
– Jersey finger Avulsion of profundus tendon from distal phalanx,
inability to actively flex DIP joint if PIP joint stabilized, commonly occurs when grabbing jersey and joint forcefully extended against active motion
Mallet FingerMallet Finger
Jersey FingerJersey Finger
Finger DislocationsFinger Dislocations
Interphalangeal joint dislocations result in obvious deformity
Must rule out associated fracture – refer to MD for imaging prior to reduction
Generally, easy to reduce – must be splinted after reduction
Finger DislocationsFinger Dislocations
Thumb InjuriesThumb Injuries
DeQuervain’s syndrome
Sprains
MP joint dislocations
Fractures
DeQuervain’s SyndromeDeQuervain’s Syndrome
Tenosynovitis of extensor pollicis brevis and abductor pollicis longus tendons from repetitive stress (radial deviation)
Presents with pain/swelling to proximal thumb/distal radius, pain with radial/ulnar wrist deviation and thumb extension and abduction
Treated conservatively with rest (immobilization), NSAIDs, modalities
DeQuervain’s SyndromeDeQuervain’s Syndrome
Finkelstein’s TestFinkelstein’s Test
Evaluative for DeQuervain’s syndrome
Thumb flexed across palm and locked in by finger flexion – wrist placed in ulnar deviation – positive if pain reproduced or increased
Can present with false-positive results
Finkelstein’s TestFinkelstein’s Test
Thumb SprainsThumb Sprains
Medial (ulnar) collateral ligament of 1st MP joint is easily most commonly injured – must rule out avulsion fracture
May be due to repetitive stress, but typically etiology is acute hyperextension and/or hyperabduction (skiing, etc.) – Gamekeeper’s thumb
Thumb SprainsThumb Sprains Commonly presents with localized
tenderness/swelling, may see ecchymosis in thenar eminence, inability to pinch or grasp objects, positive valgus stress test
If mild or moderate injury with good end point, often treat conservatively with splint for 4-6 weeks
If rupture, early surgical intervention indicated to provide acceptable joint stability
11stst MP Joint UCL Sprain MP Joint UCL Sprain
11stst MP Joint Dislocation MP Joint Dislocation
Etiology usually hyperextension and/or hyperabduction – may have associated fracture
Rupture of volar (palmar) ligamentous structure
Presents with obvious deformity and inability to perform ROM
Refer to MD for reduction
Thumb DislocationThumb Dislocation
Thumb FracturesThumb Fractures
1st metacarpal fractures due to acute trauma
If fracture extends into articular surface (joint space), known as Bennett’s fracture
Bennett’s fracture often requires surgical intervention to fixate fracture segment to allow for normal bony alignment and stability
Bennett’s FractureBennett’s Fracture