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  • Author or Editor: Gayle H. Jaeger x
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in Journal of the American Veterinary Medical Association


Objective—To compare and validate goniometric joint measurements obtained from nonsedated and sedated cats with measurements from radiographic evaluation.

Animals—20 adult cats with no evidence of joint disease.

Procedures—Measurements of flexion and extension of the carpus, elbow, shoulder, tarsus, stifle, and hip joints and of carpal and tarsal joints during varus and valgus angulation were made by a single investigator before and after sedation of cats. Measurements were made by use of a goniometer with a masked dial. Joint angle measurements were compared between nonsedated and sedated cats and also with measurements from radiographs made while cats were sedated. Each series of measurements was repeated 4 times. To evaluate repeatability, Cronbach α values were calculated for repeated measure results of goniometric joint measurements of nonsedated and sedated cats. An intraclass correlation was calculated to determine reliability among the 3 measurement types (ie, measurements from nonsedated and sedated cats and on radiographic evaluation).

Results—Joint measurements did not differ significantly by measurement type, when comparing radiographic measurements with goniometric measurements in sedated and nonsedated cats. Cronbach α values were > 0.99 for goniometric joint measurements within individual nonsedated and sedated cats and also for comparison of mean meaurements obtained from sedated cats versus nonsedated cats versus radiographs. An intraclass correlation of 0.999 revealed high reliability among measurement types.

Conclusions and Clinical Relevance—Results indicated that goniometric joint measurements in nonsedated and sedated cats are repeatable and valid.

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in American Journal of Veterinary Research


Objectives—To describe placement of hinged transarticular external fixation (HTEF) frames and evaluate their ability to protect the primary repair of unstable joints while allowing joint mobility in dogs and cats.

Design—Retrospective study.

Animals—8 cats and 6 dogs.

Procedure—HTEF frames were composed of metal or epoxy connecting rods and a hinge. Measurements of range of motion of affected and contralateral joints and radiographs were made after fixator application and removal.

Results—9 animals (4 cats and 5 dogs) had tarsal and 5 (4 cats and 1 dog) had stifle joint injuries. Treatment duration ranged from 45 to 100 days (median, 57 days). Ranges of motion in affected stifle and tarsal joints were 57% and 72% of control while HTEF was in place and 79% and 84% of control after frame removal. Complications were encountered in 3 cats and 2 dogs and included breakage of pins and connecting rods, hinge loosening, and failure at the hinge-epoxy interface.

Conclusions and Clinical Relevance—HTEF in animals with traumatic joint instability provided adjunctive joint stabilization during healing and protection of the primary repair and maintained joint motion during healing, resulting in early weight bearing of the affected limb. (J Am Vet Med Assoc 2005;227:586–591)

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in Journal of the American Veterinary Medical Association