Hand and Wrist Diagnosis and Imaging Mary Lloyd Ireland ...forms.acsm.org/16tpc/PDFs/21...
Transcript of Hand and Wrist Diagnosis and Imaging Mary Lloyd Ireland ...forms.acsm.org/16tpc/PDFs/21...
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Hand and Wrist Diagnosis and Imaging
Mary Lloyd Ireland, MD FACSM
www.MaryLloydIreland.com www.youtube.com/ukyortho
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Disclosure
•! Neither I, Mary Lloyd Ireland, MD, nor any family member(s), have any relevant financial relationships to be discussed, directly or indirectly, referred to or illustrated with or without recognition within the presentation.
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Menu DDX
Plain Radiographs SL Dissociation
Imaging Scaphoid FX Hamate FX
Hand
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Introduction
•! HISTORY •! PHYSICAL EXAM •! GOOD PLAIN
RADIOGRAPHS
Most Important
and Key to Correct
Diagnosis
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5
IS IT A WRIST SPRAIN OR NOT?
Make the Diagnosis!
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Wrist Sprains Do Exist, but . . .
•! You must make a diagnosis •! Don t miss:
•! Scaphoid fractures •! Carpal instability •! Hook of hamate fracture •! Tendinopathies
•! If missed, athlete will develop chronic wrist problems and disability
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Physical Exam by Zones
•! Anatomic: 5 zones of the wrist •! Radial dorsal •! Central dorsal •! Ulnar dorsal •! Radial volar •! Ulnar volar
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•! Ganglion cyst •! Sensory branch radial nerve irritation •! Intersection syndrome
•! Friction between extensor pollicis brevis and abductor pollicis longus
Radial Dorsal Zone
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Radial Dorsal Zone •! Fracture
•! Scaphoid •! Radial styloid
•! Arthritis •! 1st CMC •! Basilar joint
•! Tenosynovitis •! De Quervain s
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De Quervain s Tenosynovitis
Abductor pollicis longus Extensor pollicis brevis
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DeQuervain’s tenosynovitis
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Central Dorsal Zone •! Kienbock s Disease •! Ganglion cyst •! Scapholunate ligamentous injury •! Capitate pain
Radial Volar Zone •! Scaphoid tuberosity pain palpation •! Flexor carpi radialis tendinitis •! Median nerve – carpal tunnel syndrome •! Vascular
•! Allen s test
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Ulnar Dorsal Zone •! DRUJ
•! Instability •! TFCC Tear •! Ulnar impaction •! Fracture
•! Hook of hamate •! Pisiform
Ulnar Dorsal Zone •! Lunotriquetral instability •! Extensor carpi ulnaris
•! Instability •! Strain •! Tendinitis
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Ulnar Volar Zone
•! Arthrosis •! Pisotriquetral
•! Fracture •! Ulnar nerve compression
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Volar Wrist Ganglion
•! Diagnosis •! Location over STT joint (adjacent to FCR tendon) or over radiocarpal joint •! DDx
•! Radiocarpal arthritis •! FCR tendinitis •! CMC/STT arthritis
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DIAGNOSIS MADE EASY
•! Cysts / Masses •! Dorsal Wrist Ganglion •! Volar Wrist Ganglion •! Volar Retinacular Ganglion Cyst •! Giant Cell Tumour of the tendon sheath •! Mucous cyst of DIP joint
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Dorsal Wrist Ganglion Dorsal Wrist Ganglion Dorsal Wrist Ganglion •! Diagnosis
•! Mass over dorsal radial carpus
•! Fluctuates in size •! Pain often associated
with increases in size, but may also be present if mass disappears
•! Sometimes a history of indirect injury
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DIAGNOSIS MADE EASY
•! Compression: Nerve or tendon •! Carpal tunnel syndrome •! Cubital tunnel syndrome •! Radial tunnel syndrome •! DeQuervaine’s •! Trigger finger
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Carpal tunnel syndrome
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Cubital tunnel syndrome
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Radial tunnel syndrome
6 cm
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Physical Exam: Know the surface anatomy and location of structures
Radial styloid process Anatomical Snuff Box
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Cubital tunnel syndrome
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Hematoma, no fracture
Infection, MRSA
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Plain Radiographs
•! Three views: AP, Lateral, Oblique •! Marked cone views •! Bilateral views
•! Navicular •! Stress
•! Carpal tunnel views
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GENERAL PRINCIPLES Two plain orthogonal xray views that incorporate the joint above and the joint below may be (and often are) insufficient to diagnose fractures and dislocations of the hand and wrist
45 degree oblique
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GENERAL PRINCIPLES A physical examination precedes every plain radiograph so that appropriate orthogonal views to the expected plane of the pathology/fracture can be requested
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GENERAL PRINCIPLES Remember to request stress views for the evaluation of suspected ligamentous disruption of the hand and wrist (such as SLIOL tears, LTIOL tears, collateral ligament tears of the MCP and IP joints)
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ANGLED RADIOGRAPHS
•! Carpometacarpal joints Trapezoidometacarpal
Trapeziometacarpal
Scaphotrapezial
Scapho trapezoidal
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PLAIN RADIOGRAPHS
•! Carpus •! Scaphoid
25 degree pronated
Pisiform uncovered on pronated view
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PLAIN RADIOGRAPHS
•! Carpus •! Lunate
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PLAIN RADIOGRAPHS •! Carpus
•! LT ligament, triquetrum
30 degree pronated
S P C
V I S I
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PLAIN RADIOGRAPHS •! Carpus
•! Trapezoid : Hyperpronated view
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PLAIN RADIOGRAPHS
•! Carpus •! Capitate
25 degree caudad
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Scapholunate Dissociation
•! Wrist injuries very common in sports •! Some injuries difficult to diagnose •! Scapholunate ligament injuries typically occur
from a fall on an outstretched hand or forced extension and radial deviation
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Physical examination •! Tender to palpation directly over the lunate and the
scapholunate interval •! Snuffbox non-tender •! Pain with wrist extension •! Watson s test
negative
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Scapholunate Dissociation
•! Typical findings •! Positive Watson s test •! Increased scapholunate angle on lateral view - DISI
deformity •! Widened scapholunate interval on ulnar deviation and
clinched fist views
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Watson s Test Scaphoid
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Forceful resistance against pronation and radial deviation
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Patient able to voluntarily reproduce popping maneuver in wrist
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Physical examination •! Tender to palpation directly over the lunate and the scapholunate
interval •! Snuffbox non-tender •! Pain with wrist extension •! Watson s test
negative
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Scapholunate Dissociation
•! Typical findings •! Positive Watson s test •! Increased scapholunate angle on lateral view - DISI
deformity •! Widened scapholunate interval on ulnar deviation and
clinched fist views
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Clenched Fist PA View Scapholunate Ligament Disruption The Capitate migrates proximally in the distal row forcing the proximal row scaphoid and lunate to move apart
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Ulnar deviation views
Normal Scapholunate dissociation
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Terry Thomas sign
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Wrist arthritis
•! Sequel of untreated SL dissociation or scaphoid waist fracture
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Plain Xrays •! Soft tissue swelling / fat pad
MRI Scan •! Soft tissue masses •! Fixed / Mobile
CT Scan •! Bone fracture healing
Ultrasound •! Solid vs. cystic lesions
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Acute scapholunate ligament tear
Chronic triquetrum fracture
Chronic triquetrum fracture
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UNCLEAR MEDICINE
•! Limited usefulness •! Gilula says:
It s only hot if it s REALLY hot
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CT SCAN
•! Principle: The plane of the imaging should be determined before the scan is done, so that 2-D (transverse, saggital or frontal) or 3-D recons are not counted upon to make up for information that was unobtained at the time of scan
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CT SCAN •! Coronal, saggital, frontal
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CT SCAN
•! Scaphoid
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CT SCAN
•! Scaphoid: A fracture is not healed until it is healed radiographically (usually by CT scan)
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MRI
•! T1, T2, fat suppression T2
T2
T2
T1
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MRI
•! Radiolunate OA vs. ulnocarpal impaction vs. Kienbock s
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MRI
•! Ganglion
Guyon s canal
SLIOL
Occult DCG
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MRI
•! TFCC
Ligamentum subcruatum
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MRI
•! AVN
T2 fs T1
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MRI
•! s/p CTR: Palmar subluxation of median nerve
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MRI
•! ECU disease
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MRI
•! Occult fracture - scaphoid
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MRI
•! Arthrography: Added value c/w plain MRI •! SLIOL •! TFCC
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Dr. Steve Carter • Consultant Hand Surgeon Sports Science Institute • Capetown, South Africa
Difficult Wrist Injuries in Athletes
•! Radial Sided Wrist Injury •! Fall on Hyperextended wrist in Radial deviation •! Easy to Diagnose •! Difficult management decisions •! Potential long term severe disability •! Non union common
= Scaphoid
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Symptoms
•! Weakness of grip •! Tenderness
(specifically anatomic snuff box) •! Limited ROM •! NOT specific to scaphoid fractures
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Vascularity •! Increased incidence of delayed
healing/ nonunion with isolation of proximal pole by the fracture
•! No interosseus anastomosis •! 1. Dorsal branch of radial artery •! 2. Volar scaphoid branch
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Fracture type comparison
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Proximal Pole Scaphoid Fracture Ulnar Styloid Fracture
Immobilized 4 Months Osteopenia except proximal pole Initial View
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Scaphoid Fracture
ORIF
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Scaphoid Nonunion ORIF
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Scaphoid Nonunion ORIF
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Ulnar deviation views
Normal Scapholunate dissociation
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Scaphoid fracture, left wrist
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Basketball Injury, 10 YO, Left Wrist: Initial
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Basketball Injury, Left Wrist: 2 weeks
Scaphoid Fracture Can you see it?
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Basketball Injury, Left Wrist: 5 weeks Now you can..
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Basketball Injury, Left Wrist: 8 weeks Casted SATS 6 weeks then brace-wore at all times! HEALED!
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Making the diagnosis with a negative x-ray •! MRI
Accurate (Fowler, Sullivan Skeletal Radiol 1998 Dec;27(12)
Cost effective (Brooks, Br J. Sports Med 2005 Feb;39(2)
Gooding N Z Med J. 2004 Sept 10;117
Dorsay, Am J Roentgenol 2001 Dec 177(6)
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MRI
•! Occult fracture - scaphoid
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Scaphoid Fracture Nonunion
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Dr. Steve Carter • Consultant Hand Surgeon Sports Science Institute • Capetown, South Africa
Difficult Wrist Injuries in Athletes • Ulna sided wrist injury • Fall on hyperextended wrist in Ulna deviation • Difficult to diagnose • Difficult to Image Controversy as to Imaging
techniques • Easy management decision • Very few long term problems • Non union common = Hook of Hamate
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Dr. Steve Carter • Consultant Hand Surgeon Sports Science Institute • Capetown, South Africa
Keys to Diagnosis! Targeted clinical examination: •! Volar tenderness over hamate
hook
•! Resisted Flexion of ring and little fingers with wrist in ulnar deviation
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Dr. Steve Carter • Consultant Hand Surgeon Sports Science Institute • Capetown, South Africa
Radially deviated wrist • Almost linear flexor tendon
excursion
• Small resultant ulnar vector
• Minimal pain with resisted flexion of ring and little fingers
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Dr. Steve Carter • Consultant Hand Surgeon Sports Science Institute • Capetown, South Africa
Ulnar deviated wrist • Hook acts as pulley for RF
and LF excursion
• Large resultant ulnar vector
• Shearing force against hook causes pain
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ANGLED RADIOGRAPHS
•! Carpus
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Hamate Fracture
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PLAIN RADIOGRAPHS
•! Carpus •! Hamate
PA 15 degree supinated
?
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Wrist
•! Triangular fibrocartilage disorders •! Assessment •! Repair vs. debridement
•! Intra-articular fractures •! Acute instability
WRIST PAIN = LOW BACK PAIN
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History •! Single Episode or
Chronic Overuse •! Grip Style
•! loose grip
•! Swing Style •! Spin •! Double or single
handed
•! Dominant Hand?
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Physical Examination
ECU tendinitis (primary) ECU subluxation
* * *
* * *
•! Swelling
•! Point of Maximal Tenderness
•! Provocative testing
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Physical Examination
ECU tendinitis (primary) ECU subluxation Ulno-carpal impaction TFCC injury FCU tendinitis Lunotriquetral ligament tear Triquetral hamate impaction Hook of the hamate fracture
*
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Triangular fibrocartilage complex
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MRI
•! TFCC
Ligamentum subcruatum
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MRI
•! ECU disease
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Ulnar sided wrist pain
•! DRUJ-ery – Richard A Berger, MD, Mayo Clinic
•! I have spent over 25 years studying an area of the wrist that measures one square centimeter – William B. Kleinman, MD, Indiana Hand Center
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Hamate Fracture
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CT SCAN TO DIAGNOSE Hook of Hamate fracture
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Dr. Steve Carter • Consultant Hand Surgeon Sports Science Institute • Capetown, South Africa
Summary
• A hook of hamate fracture should not be missed!
• Have a high index of suspicion based on suggestive history.
• Include resisted finger flexion in the ulnar deviated wrist and palpation over the hamate hook as part of your examination
• Request a CT scan rather than MRI or XR to confirm clinical diagnosis
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Distal radial growth arrest
Little Leaguer s Shoulder
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Wrist
•! Distal radius epiphyseal fractures •! Gymnast s wrist
•! Symptoms: wrist pain •! Xrays widened distal radius •! Trend toward negative ulnar variance •! Then higher than normal 80% load on radial
epiphyseal plate
DiFiori JP, Puffer JC, Aish B, Dorey F, Wrist Pain, distal Radial Physeal Injury, and Ulnar Variance in Young Gymnasts: Does a Relationship Exist? Am J Sports Med 2002;30(6):879-885.
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Wrist
•! More ! ulnar variance •! Ulnar variance not associated with wrist pain •! 59 Gymnasts (28 girls / 31 boys)
•! Average age 9.3 years •! 10-14 years of age: 83% had wrist pain •! Outside that age range: 44% had wrist pain
DiFiori JP, Puffer JC, Aish B, Dorey F, Wrist Pain, distal Radial Physeal Injury, and Ulnar Variance in Young Gymnasts: Does a Relationship Exist? Am J Sports Med 2002;30(6):879-885.
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•! Radiographic survey •! 60 gymnasts (39 females / 21 males) •! Delay in maturation for females •! 5 abnormal wrist xrays (4 females / 1 male) •! Look for widening and irregularity,
distal radius •! Look for arrested growth •! Positive ulnar variance in Salter I or II fractures •! Need larger scale studies
Caine D, Roy S, Singer KM, Broekhoff J, Stress changes of the distal radial growth plate: A radiographic survey and review of the literature, Am J Sports Med 1992;20(3):290-298.
Radiographic survey Wrist
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Congenital laxity party trick
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PIPJ dorsal dislocation deformity at joint
Proximal phalanx fracture deformity proximal to joint with rotation
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MCP, Volar dislocation, reducible
Some are not
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PLAIN RADIOGRAPHS
Digits
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PLAIN RADIOGRAPHS
Digits
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Gamekeepers Thumb Stener’s lesion complete UCL tear adductor aponeurosis attached to fragment
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PLAIN RADIOGRAPHS
•! MCPs
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PLAIN RADIOGRAPHS
•! PIPs
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Mallet Finger
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PLAIN RADIOGRAPHS
•! XR evaluation of jersey finger
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Trigger finger
•! Diagnosis •! THE GREAT PRETENDER
•! Clicking, locking •! Pain over A1 pulley •! Mass at MCP flexion crease •! Flexion deformity of PIP joint •! “Weakness” of power grip
•! Associated diagnoses •! Diabetes mellitus •! Hypothyroidism
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Trigger finger
•! Diagnosis •! Tenderness over
A1 pulley is the SINE QUA NON of diagnosis
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PIP & DIP joint arthritis
•! Diagnosis •! PIP nodes: Bouchard •! DIP nodes: Heberden •! AM pain, stiffness •! Systemic diathesis
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PIP & DIP joint arthritis
•! Diagnosis •! Radiographic findings
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PLAIN RADIOGRAPHS
•! Metacarpals
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Thumb CMC Arthritis
•! Diagnosis •! Pain at thumb base or thenar eminence upon
attempted key pinch, attempted ‘wide grip’ (opening tight jar), attempted ‘narrow grip’ (turning doorknob)
•! Perceived decrease in function due to poor thumb anteposition
•! Thumb MC adducted into web space
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Thumb CMC Arthritis
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Conclusions
•! Do history and physical before imaging studies •! Imaging studies may overdiagnose hand
disorders •! Must correlate your exam with imaging studies •! History and physical overrides imaging
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Splints –Many Companies Many Braces
•! Wrist and Hand Supports •! One company 29 different braces for forearm, wrist,
hand, and thumb •! Waterproof reformable removable braces •! heat, fit, mold, fit to patient
•! Wrist sprains require compression and splinting until painless range of motion is possible, then functional exercise and sport specific activities.
•! Kinesiotaping: For axial load or bat/racquet sports
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Treatment of Wrist Sprains
•! Cold -- not directly on skin •! Putty and other materials for padding and restoration of
active motion and intrinsic muscle activation •! Immerse the Hand in Warm Sand or Wax •! Local Modalities
•! Ultrasound, Iontophoresis, many others . . .
•! Creams •! Early On Get OT, ATC and Patient on an Intense
Reduction of Swelling & Restoration of Function Program. Splint appropriately
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Conclusions
•! Make sure your diagnosis is correct •! Many wrist sprain diagnoses are not! •! Don t miss:
•! Scaphoid Fracture •! Carpal Instability •! TFCC Injuries •! Hamate Fractures in Athletes . . .
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IMAGING OF THE HAND AND WRIST
THANKS TO: William W. Dexter, MD Maine Medical Center
Portland, ME And
Martin I. Boyer, MD Department of Orthopaedic Surgery
Washington University School of Medicine with
David A Rubin, Louis Gilula, Bill Middleton, Sharlene Teefey Mallinkrodt Institute of Radiology