Sport Medicine

Authors: Fu YC, Torres BT, Budsberg SC.
Journal: AJVR

Objective—To evaluate a 3-D kinematic model of the hind limb developed by use of a joint coordinate system in dogs. Animals—6 clinically normal adult mixed-breed dogs. Procedures—17 retroreflective markers were affixed to the skin on the right hind limb of each dog. Eight infrared cameras were arranged around a gait platform to record marker locations as dogs were recorded moving through the calibrated space 5 times during a walk and trot at velocities of 0.9 to 1.2 m/s and 1.7 to 2.1 m/s, respectively.

Authors: Gordon-Evans WJ, Dunning D, Johnson AL, Knap KE.
Journal: VCOT

During intense physical exercise, the cyclo-oxygenase-2 (COX-2) pathway is upregulated which contributes to soreness. The aim of this study was to determine if there was a clinical affect of deracoxib (COX-2 selective antagonist) on dogs engaged in intense rehabilitation following tibial plateau levelling osteotomy for cranial cruciate ligament rupture. Our hypothesis was that dogs receiving deracoxib would demonstrate less lameness, better range-of-motion (ROM), and faster muscle mass recovery than the control dogs.

Authors: Light VA, Steiss JE, Montgomery RD, Rumph PF, Wright JC.
Journal: AJVR

Objective-To establish a protocol to collect temporal-spatial gait analysis variables by use of a portable walkway system in Labrador Retrievers at a walk and to determine reference values. Animals-56 healthy Labrador Retrievers. Procedures-6 passes across the walkway (3 passes in each direction) were recorded. Inclusion criteria for a pass were that the dog was at a walk (velocity, 60.0 to 90.0 cm/s) and had minimal head turning. The first 3 passes that met the inclusion criteria were analyzed for each dog. Results-Mean stride length was 88.4 cm.

Authors: Millard RP, Headrick JF, Millis DL.
Journal: JSAP

OBJECTIVES: To evaluate range of motion (ROM) of the pelvic limb in healthy dogs descending stairs compared with decline slope walking.

Authors: Feldsein JD, Wilke VL, Evans RB, Conzemius MG.
Journal: AJVR

Objective-To determine the relationship between serum cortisol concentration and pain severity as measured by force platform gait analysis in dogs with experimentally induced synovitis of the stifle joint. Animals-10 healthy hound-type dogs. Procedures-Dogs underwent 2 study phases. In the first phase, serum cortisol concentration, systolic arterial blood pressure, heart rate, and gait data were obtained at 0 (first sample), 2.5, 5, 7.5, and 10 hours.

Authors: Kinematic analysis of the pelvic limbs of healthy dogs during stair and decline slope walking. Millard RP, Headrick JF, Millis DL.
Journal: JSAP

Objectives: To evaluate range of motion (ROM) of the pelvic limb in healthy dogs descending stairs compared with decline slope walking. Methods: Reflective spheres were placed on the skin over the joints of the right pelvic limb of seven adult, hound-type dogs with no clinical signs of orthopaedic or neurologic disease. Five trials of stair and ramp descent of each dog were recorded using four 60 Hz digital infrared cameras. Two-dimensional kinematic data were collected as dogs walked down stairs and on a continuous decline of equivalent slope.

Authors: Holler PJ, Brazda V, Dal-Bianco B, Lewy E, Mueller MC, Peham C, Bockstahler BA.
Journal: AJVR

OBJECTIVE: To assess forelimbs and hind limb joint kinematics in dogs during walking on an inclined slope (uphill), on a declined slope (downhill), or over low obstacles (cavaletti) on a horizontal surface and compare findings with data acquired during unimpeded walking on a horizontal surface. ANIMALS: 8 nonlame dogs (mean +/- SD age, 3.4 +/- 2.0 years; weight, 23.6 +/- 4.6 kg).

Authors: Nicola Hagemeister 1,2,3 PhD, Bertrand Lussier 4 , DVM, MSc, Diplomate ACVS, Emna Jaafar 3 , MEng, Julien Clément 3 , MEng, and Yvan Petit 1,3 PhD
Journal: Veterinary Surgery

Objective: To design an experimental testing apparatus simulating a quasi-static model of the stance phase at a trot for a normal and a cranial cruciate ligament (CCL)-deficient stifle under near physiologic conditions.
Study Design: In vitro biomechanical study.
Animals: Paired pelvic limbs (n=6) from 3 dogs, weighing 29.5–31 kg.

Authors: German AJ, Holden SL, Morris PJ, Biourge V.
Journal: AJVR

OBJECTIVE:To assess performance of a portable bioimpedance monitor for measurement of body composition in dogs. ANIMALS: 24 client-owned dogs. PROCEDURES: Percentage body fat was measured via dual-energy x-ray absorptiometry (DEXA) and with a portable bioimpedance monitor, and body condition score (BCS) was measured by use of a 9-integer scale. RESULTS: Although the precision of the bioimpedance monitor was good, this varied among dogs. Body position (standing vs sternal) had no effect on bioimpedance results.

Authors: Bedi A, Feeley BT, Williams RJ 3rd.
Journal: J Bone Joint Surg Am

Articular cartilage has a poor intrinsic capacity for healing. The goal of surgical techniques to repair articular cartilage injuries is to achieve the regeneration of organized hyaline cartilage. Microfracture and other bone marrow stimulation techniques involve penetration of the subchondral plate in order to recruit mesenchymal stem cells into the chondral defect. The formation of a stable clot that fills the lesion is of paramount importance to achieve a successful outcome.