Flashcard Set Preview
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| 1 |
Wrist Complex
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-Flexible spacer betweendistal surface of radiu and ulnar disc and metacarpals
-Sum of all...
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| 2 |
Proximal row of carpals is ______ bound together
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loosely
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| 3 |
Distal row of carpals is _____ bound together
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Firmly
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| 4 |
Scaphoid
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-Coupled with radius to form direct line of force transmission thru wrist
-Most frequently...
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| 5 |
Lunate
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Central bone of prox row
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| 6 |
Capitate
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-Largest
-Centrally located in wrist
-Axes of motion pass thru head
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| 7 |
Trapezium
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Distal surface is saddle shaped for articulation with base of 1st metacarpal
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| 8 |
Ligaments of Wrist Complex
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Extrinsic - prox attachment is oustide wrist and distal attachment on wrist
Dorsal...
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| 9 |
Dorsal Radiocarpal ligs
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-Thickenings in dorsal aspect of capsule
-Tight in full flexion
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| 10 |
Radial Collateral ligs
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-Reinforces lat aspect of joint capsule
-Max tight in ulnar dev with wrist ext
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| 11 |
Palmar Radiocarpal ligs
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Radiocapitate, Radiolunate, and Radioscapholunate
-Thicker and stronger than dorsal ligs
-Maintain...
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| 12 |
Ulnocarpal Complex (Triangular Fibrocartlage Complex)
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-Ulnar articular disc + ulnar collateral lig + plamar ulnocarpal lig
-Fills ulnocarpal space...
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| 13 |
Articular Disc
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Part of Ulnocarpal Complex
-Ulnar notch of radius --> base of ulnar styloid process
-Component...
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| 14 |
Ulnar Collateral Lig
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Part of ulnocarpal complex
-Thickening of the medial side of the joint capsule
-Max tight...
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| 15 |
Palmar Ulnocarpal Ligs
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-Dense band from ulnar disc --> lunate and triquetrum
-Max tight in wrist ext with radial...
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| 16 |
Joints of Wrist
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Radiocarpal
Midcarpal
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| 17 |
Radiocarpal Joint
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-Distal end of radius and ulnar articular disc with proximal surface of proximal row of carpals
-Distal...
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| 18 |
Midcarpal Joint
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-Articulation of distal surface of proximal row of carpals with proximal surface of distal...
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| 19 |
Palmar Aponeurosis
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-Dense, white shiny CT confined to palm
-PL's tendon of insertion
-Sends out bands/extensions...
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| 20 |
Dupuytren's Contracture
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-Bands of palmar aponeurosis become thick, dense, and fibrotic
-CT gets shorter causing fingers...
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| 21 |
At Wrist/Base of Carpals
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-Tendons of FDP and FDS are covered by Common Digital Synovial Sheath/Ulnar Bursa
-Deep to...
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| 22 |
At Palm/Base of Metacarpals
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-Tendons of FDP and FDS are covered by the Common Digital Synovial Sheath/Ulnar Bursa
-FDP...
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| 23 |
At Base of Proximal Phalanx
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-Tendons of FDP and FDS enter fibro-osseous tunnel formed by bone of distal portion of metacarpals...
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| 24 |
At Middle Phalanx
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-FDS tendon splits and wraps around and dorsal to FDP and attaches to middle phalanx
-FDP...
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| 25 |
Digital Tendon Sheath
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Pars Anularis- Thick
-Prox and middle phalanges
Pars Cruciformis - Thin
-MCP jt...
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| 26 |
Digital Synovial Sheath
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-Within Digital Tendon Sheath
-Bi-layer serous membrane
Parietal Layer
-Associated...
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| 27 |
Trigger Finger
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-Synovial membrane swollen
-Flex and membrane pops thru tip of tunnel and doesnt go back
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| 28 |
Extensor Expansion Consists of:
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ED
EI
EDM
Lumbricales
PI
DI
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| 29 |
Hood of Extensor Expansion
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-Level of MCP jt
-Tendon of ED fans out to cover dorsal aspect of digit
-distal portion of...
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| 30 |
Extensor Mechanism
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The complex tendon after receiving contributions, splits into 3 bands:
Central Band- base...
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| 31 |
Function of Extensor Expansion/Mechanism
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Extending MCP and IP joints
Allows Lumbricales and possibly Interossei to assist with flexion...
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| 32 |
Ligaments of Expansion
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Oblique Retinacular Ligs
-Secure lateral bands to lateral surfaces of digit
(prevents lat...
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| 33 |
Mallet Deformity
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-Lateral band disrupted
-Unable to extend distal IP jt
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| 34 |
Swan Neck Deformity
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-Oblique Retinacular lig destroyed
-Lat bands drift dorsal
-Hyperext of prox IP jt
->...
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| 35 |
Boutonniere Deformity
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-Loss of Central Tendon and Transvere Retinacular lig
-Lat bands slide ventral
-Flex of prox...
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| 36 |
Claw Hand Deformity
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-Loss of ulnar nerve
-Loss of MCP flex and ext of prox and distal IP jts
-Leads to ext of...
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