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30 Cards in this Set
- Front
- Back
- 3rd side (hint)
Views:
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LM
DLMPO DMPLO DP Flexed Lateral Skyline Views: |
Distal row of carpal bones (most common)
Proximal row of carpal bones distal radius |
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Lateral - Medial
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two fat pads on dorsal surface
radial carpal bone - convex intermediate carpal bone - concave third carpal bone - convex tendon sheath - extensor carpi radialis three synovial joints |
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flexed lateral
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DP - Dorsopalmar
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radiolucent area is distal radius is normal
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DLPMO
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DMPLO
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fifth carpal bone
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distal row of carpal bones
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radial facet is medial and the larger of the two facets
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proximal row of carpal bones
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distal radius
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degenerative joint disease
-radiographic findings: . . . . . . -Carpometacarpal joint . . . - |
degenerative joint disease
-radiographic findings: . Osteophytes . Rounding of articular margins .sclerosis or lucent zones of the subchondral trabecular bone .joint capsule distension .periarticular soft tissue swelling .joint space narrowing -Carpometacarpal joint .narrowing, subchondral bone sclerosis and lucencies .sometimes only 2nd and 4th carpal bone .mild but chronic lameness -Correlate findings to age of horse, conformation, previous performance and future work |
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osteophytes
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intercarpal ligament desmitis
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Third carpal bone (C3) Sclerosis
- . - - . . . |
Third carpal bone (C3) Sclerosis
- mild sclerosis is normal modelling of racehorses in training (adaptive) .radial facet -marked sclerosis of radial and/or intermediate facet is abnormal (pathologic) -Radiographic findings . . . |
-Radiographic findings
.loss of trabecular bone and cortiomedullary distinction .lucent zones may be precursors of fractures (necrosis) .middle carpal joint capsule distension |
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sclerosis radial facet
lucent regions |
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Chip fractures
- - - - . . . . . |
Chip fractures
- occur commonly in racehorses - involve one articular surface -most readily observed on flexed lateral view -common sites: . . . . . |
-common sites:
.distodorsal radius .distodorsal radial carpal bone (medial aspect) .proximodorsal radial facet of third carpal bone .distodorsal intermediate carpal bone .less commonly proximal radial carpal bone and intermediate carpal bone |
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chip fracture
distolateral aspect of the radius |
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chip fracture distomedial radial carpal bone
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chip fracture
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normal
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Slab fractures
- - - - - |
Slab fractures
-involve proximal and distal articular surface -can be dorsal (frontal) or sagittal plane -C3 is most common, can be seen on other carpal bones -usually seen with lateral view, but may need skylines -usually develop as terminal event in cascade of nonadaptive remodeling |
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slab fracture
-DLPMO |
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-LM view
slab fracture |
with flexion, fracture reduces
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osseous or subchondral cyst-like lesions
- - - . . . |
osseous or subchondral cyst-like lesions
-carpal bones, proximal aspect of the second of fourth metacarpal bones and distal aspect of the radius -developmental abnormality, trauma or infection - can be associated with lameness . . . |
- can be associated with lameness
.articular lesions .distomedial aspect of the radius .ulnar carpal bone lesions with tearing of the lateral palmar intercarpal ligament |
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-DLPMO
osseous or subchondral cyst like lesion |
normal
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osseous or subchondral cyst like lesion
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cyst in distal radius
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other signficant radiographic abnormalities
- . . - - - . . - |
other signficant radiographic abnormalities
-soft tissue swelling . . -radial fractures -physeal fractures -osteochondroma of distal radius . . -infection |
other signficant radiographic abnormalities
-soft tissue swelling .periarticular .articular -radial fractures -physeal fractures -osteochondroma of distal radius .distention of carpal sheath, lameness, resentment to pressure .cartilage covered exostoses -infection |
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soft tissue swelling
-ultrasound or injection of iodinated contrast medium for further diagnostic evaluation -location of soft tissue swelling -evaluate bone and joints |
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soft tissue swelling
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