anatomy and examination of the hand and wrist › newdownload › han.pdf · anatomy and...
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A&E Hairmyres
ANATOMY AND EXAMINATION ANATOMY AND EXAMINATION OF THE HAND AND WRISTOF THE HAND AND WRIST
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A&E Hairmyres
OBJECTIVESOBJECTIVESBony structure
Nerve supply
Blood supply
History
Examination technique
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A&E Hairmyres
1. Radial styloid
2. Scaphoid
3. Lunate
4. Triquetral
5. Pisiform
6. Trapezium
7. Trapezioid
8. Capitate
9. Hamate
10. Metacarpal
11. Proximal phalanx
12. Middle phalanx
13. Distal phalanx
14. ulna styloid
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A&E Hairmyres
BONY STRUCTUREBONY STRUCTURE
• Carpal bones:scaphoid (some)lunate (lovers)Triquetral (try)Pisiform (positions)Trapezium (that)Trapeziod (they)Capitate (can’t)Hamate (handle)
(right hand dorsum)
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A&E Hairmyres
1. 1st metacarpal2. Metacarpals II-V3. Trapezium4. Tubercle of scaphoid5. Lunate6. Triquetrum7. Radiocarpal joint8. Distal end of radius9. Distal end of ulna
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
Nerve supply Nerve supply -- SensorySensorySensory
Digital nerves: Each finger has two which run on the volaraspect of each digit laterally. Each supplies half of the finger.
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A&E Hairmyres
Nerve Supply Nerve Supply -- MotorMotor
Median nerve: passes through the carpal tunnel. It supplies the thenar muscles of the thumb.
Ulna nerve: Passes through ulna side of wrist. It supplies all the interossei , 2-3 lumbricals and hypothenar muscles .
Radial : No motor function in hand
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A&E Hairmyres
Blood supplyBlood supplyRadial artery: Lies on radial side of wrist. Main branch passes within the anatomical snuff box, then forming the palmer branch on volar aspect of the hand.
Ulna artery: Lies on ulna side of wrist then joining the radial artery to form the palmer branch.
Digital arteries: Each finger has two that run along the borders.
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A&E Hairmyres
HistoryHistory
MechanismTime since injuryHand dominanceOccupationTetanus status if wound
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A&E Hairmyres
Mechanism of InjuryMechanism of Injury
Definition
Pattern of Injury
Examination
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A&E Hairmyres
Mechanism of InjuryMechanism of Injury
Transfer of energy from environment to patientGives an idea of what injury to expect
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A&E Hairmyres
Mechanism of InjuryMechanism of Injury
Patterns of injury– Blunt
Fall on outstetched handFall on flexed handThumb “sprain”Punch injuryTwisting of fingers
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A&E Hairmyres
Mechanism of InjuryMechanism of Injury
Patterns of injury– Penetrating
LacerationIncised woundPunctureBite
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A&E Hairmyres
ExaminationExamination
Look– Swelling– Bruising – Deformity– Wound
Feel– Where tender esp Scaphoid– Palpable deformity
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A&E Hairmyres
ExaminationExamination
Move– Range of movement
ReducedAbnormal
– Any pain– Rotation
X-Ray
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A&E Hairmyres
ExaminationExamination
Flexor tendons– Deep– Superficial
Thumb
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A&E Hairmyres
ExaminationExamination
Sensation– Ulnar– Radial– Median
Motor– Medial– Ulnar
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Wrist RadiologyWrist Radiology
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A&E Hairmyres
Who to XWho to X--RayRay
Consistent mechanism and – Clinical Scaphoid– Young children– Old ladies– Bony tenderness– Significant bruising or swelling– Any glass injury
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A&E Hairmyres
The Normal WristThe Normal Wrist
AP and Lateral are the standard views
AP Radial Styloidshould be more distal than Ulnar styloid
Lateral Radial articularsurface should have 50 of palmar angulationDistal radius, Lunateand Capitate should be in alignment
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A&E Hairmyres
ChildrensChildrens WristsWrists
The Epiphysis should be exactly centred on the metaphysis in all viewsThe epiphyseal plate should be uniformly wide in all viewsAny sudden change in curvature is abnormal
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A&E Hairmyres
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Wrist AP and Lat Trans Wrist AP and Lat Trans scaphoidscaphoid perper--lunatelunate
dislocationdislocation
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
Hand XHand X--RaysRays
Normal views– AP– Oblique
True lateral
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A&E Hairmyres
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A&E Hairmyres
Metacarpal fracture: transverseMetacarpal fracture: transverse
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A&E Hairmyres
Metacarpal fracture: obliqueMetacarpal fracture: oblique
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A&E Hairmyres
BoxerBoxer’’s fractures fracture
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
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A&E Hairmyres
BennettsBennetts FractureFracture
Fracture dislocation of thumb matacarpal/carpal jointFollows forced extension of thumb
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A&E Hairmyres
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A&E Hairmyres
The The ScaphoidScaphoid
Clinical diagnosis initiallyTypical mechanismTender anatomical snuffbox or anterior scaphoidInitial X-Ray may be normalFollow up in 10 daysIf missed may undergo avascular necrosis
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A&E Hairmyres
Inter Inter articulararticular FractureFracture
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A&E Hairmyres
Blade Plate Fixation Phalanx Blade Plate Fixation Phalanx
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A&E Hairmyres
BennettBennett’’s fractures fracture
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A&E Hairmyres
ScaphoidScaphoid waist fracturewaist fracture
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A&E Hairmyres
Unstable scaphoid nonUnstable scaphoid non--unionunion
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A&E Hairmyres
LunateLunate dislocationdislocation
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A&E Hairmyres
ScapholunateScapholunate dissociationdissociation
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A&E Hairmyres
UCL sprainUCL sprain
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A&E Hairmyres
UCL ruptureUCL rupture
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A&E Hairmyres
‘‘BonyBony’’ UCLUCL