Objective—To evaluate the reliability of goniometry
by comparing goniometric measurements with radiographic
measurements and evaluate the effects of
sedation on range of joint motion.
Animals—16 healthy adult Labrador Retrievers.
Procedure—3 investigators blindly and independently
measured range of motion of the carpus, elbow,
shoulder, tarsus, stifle, and hip joints of 16 Labrador
Retrievers in triplicate before and after dogs were
sedated. Radiographs of all joints in maximal flexion
and extension were made during under sedation.
Goniometric measurements were compared with
radiographic measurements. The influence of sedation
and the intra- and intertester variability were evaluated;
95% confidence intervals for all ranges of
motion were determined.
Results—Results of goniometric and radiographic
measurements were not significantly different.
Results of measurements made by the 3 investigators
were not significantly different. Multiple measurements
made by 1 investigator varied from 1 to 6°
(median, 3°) depending on the joint. Sedation did not
influence the range of motion of the evaluated joints.
Conclusions and Clinical Relevance—Goniometry
is a reliable and objective method for determining
range of motion of joints in healthy Labrador
Retrievers. (Am J Vet Res 2002;63:979–986)