Sport Medicine

Authors: Brady RB, Sidiropoulos AN, Bennett HJ, Rider PM, Marcellin-Little DJ, Devita P.
Journal: AJVR

Objective-To assess differences in sagittal plane joint kinematics and ground reaction forces between lean and obese adult dogs of similar sizes at 2 trotting velocities. Animals-16 adult dogs. Procedures-Dogs with body condition score (BCS) of 8 or 9 (obese dogs; n = 8) and dogs with BCS of 4 or 5 (lean dogs; 8) on a 9-point scale were evaluated. Sagittal plane joint kinematic and ground reaction force data were obtained from dogs trotting at 1.8 and 2.5 m/s with a 3-D motion capture system, a force platform, and 12 infrared markers placed on bony landmarks.

Authors: Torres BT, Moëns NM, Al-Nadaf S, Reynolds LR, Fu YC, Budsberg SC.
Journal: AJVR

Objective-To compare overground and treadmill-based gaits of dogs. Animals -5 clinically normal adult mixed-breed dogs. Procedures-To obtain dynamic gait data, 30 retroreflective markers were affixed bilaterally to specific regions of the hind limbs and pelvis of each dog. For each dog, 3-D joint motion data (sagittal [flexion and extension], transverse [internal and external rotation], and frontal [abduction and adduction] planes of motion) for the hip, femorotibial, and tarsal joints were acquired during walking and trotting through a calibrated testing space overground or on a treadmill.

Authors: Zhang N, Dietrich MA, Lopez MJ.
Journal: Vet Surg

OBJECTIVE:
To identify the optimum intra-articular multipotent stromal cell (MSC) tissue source in the canine stifle.
STUDY DESIGN:
Experimental.
SAMPLE POPULATION:
Infrapatellar adipose tissue, synovium lining the joint capsule, and synovium surrounding the cranial cruciate ligament (CrCL) from normal stifles of 6 dogs.
METHODS:

Authors: Souza AN, Pinto AC, Marvulle V, Matera JM.
Journal: VCOT

Objective: To evaluate vertical forces in the pads of German Shepherd dogs by relative percentage among total limb vertical forces using a pressure sensitive walkway. Procedure: A pressure sensitive walkway was used to collect vertical force data for each pad of the limbs of 16 healthy client-owned German Shepherd dogs used for kinetic gait analysis. The vertical force for each pad was evaluated as a percentage of total limb vertical force. Weight distribution among limbs was also recorded. Velocity and acceleration were within a range of 1.3 and 1.6 ± 0.1 m/s².

Category: Sport Medicine
Authors: Ragetly CA, Griffon DJ, Klump LM, Hsiao-Wecksler ET.
Journal: Vet Surg

OBJECTIVE:
To compare kinematics, net moments, powers, ground and joint reaction forces (GRF, JRF) across the hock, stifle and hip joints in Labrador Retrievers at low risk or predisposed to cranial cruciate ligament disease (CCLD).
STUDY DESIGN:
Cross-sectional clinical study.
ANIMALS:
Clinically normal Labradors predisposed (n = 11) or at low risk for CCLD (n = 9).
METHODS:

Category: Knee - Sport Medicine
Authors: Rutherford S, Ness MG.
Journal: Vet Surg

OBJECTIVE:
To report the diagnosis and surgical management of a dorsal slab fracture of the fourth carpal bone in a racing greyhound.
STUDY DESIGN:
Clinical report.
ANIMAL:
Three-year-old, male racing Greyhound.
METHODS:
The fracture was not visible on orthogonal radiographs and the diagnosis was made by computed tomography. Open reduction and internal fixation with 2 countersunk 2.0-mm screws inserted in lag fashion was performed via a dorsal approach. Outcome was analyzed objectively by comparing preinjury and postsurgery racing performances.
RESULTS:

Authors: Abdelhadi J, Wefstaedt P, Galindo-Zamora V, Anders A, Nolte I, Schilling N.
Journal: AJVR

Objective-To evaluate the load redistribution mechanisms in walking and trotting dogs with induced forelimb lameness. Animals-7 healthy adult Beagles. Procedures-Dogs walked and trotted on an instrumented treadmill to determine control values for peak and mean vertical force as well as verticle impulse for all 4 limbs. A small sphere was attached to the ventral pad of the right forelimb paw to induce a reversible lameness, and recordings were repeated for both gaits. Additionally, footfall patterns were assessed to test for changes in temporal gait variables.

Authors: Nishida H, Shoji Y, Nakamura M, Hatoya S, Sugiura K, Yamate J, Kuwamura M, Kotani T, Nakayama M, Suzuki Y, Ide C, Inaba T.
Journal: AJVR

Objective-To compare methods for harvesting canine bone marrow stromal cells (BMSCs) and determine the biological properties of canine BMSCs at successive passages in vitro. Sample-BMSCs collected from the femurs of 9 Beagles. Procedures-A fibroblast assay was performed to compare 2 methods for harvesting BMSCs: the aspiration and perfusion method. Flow cytometric analysis was performed to evaluate the cell surface markers. Changes in proliferative activity were analyzed by examining radioactivity of hydrogen 3-thymidine.

Authors: Schwencke M, Smolders LA, Bergknut N, Gustås P, Meij BP, Hazewinkel HA.
Journal: Vet Surg

OBJECTIVE:
To investigate, noninvasively, the soft tissue artifact (STA) in canine kinematic gait analysis.
STUDY DESIGN:
Experimental study.
ANIMALS:
Labrador retrievers (n = 4).
METHODS:

Authors: Cuddy LC, Lewis DD, Kim SE, Conrad BP, Banks SA, Horodyski M, Fitzpatrick N, Pozzi A.
Journal: Vet Surg

OBJECTIVE:
To evaluate the effects of antebrachial rotation at 3 elbow flexion angles on contact mechanics and 3-dimensional (3D) alignment of normal dog elbows.
STUDY DESIGN:
Ex vivo biomechanical study.
ANIMALS:
Unpaired thoracic limbs from 18 dogs (mean ± SD weight, 27 ± 4 kg).
METHODS: