Cemented total knee replacement in 24 dogs: surgical technique, clinical results, and complications.
OBJECTIVE
To characterize the performance of cemented total knee replacement (TKR) in dogs.


METHODS
Preclinical research study.


METHODS
Skeletally mature, male Hounds (25-30 kg; n=24) with no preexisting joint pathology.


METHODS
Dogs had unilateral cemented TKR and were evaluated at 6, 12, 26, or 52 weeks (6 dogs/time point) by radiography, bone density analysis, visual gait assessment, and direct measurement of thigh circumference and stifle joint range of motion as indicators of functional recovery. At study end, the stability of the cemented tibial component was determined by destructive mechanical testing.


RESULTS
Joint stability was excellent in 16 dogs (67%) and good in 8 dogs. None of the tibial components had evidence of migration or periprosthetic osteolysis whereas 1 femoral component was loose at 52 weeks. There was an early and significant decrease in tibial bone density, likely because of disuse of the operated limb. Dogs returned to full activity by 12 weeks. The tibial cement-bone interface maintained its strength over 52 weeks.


CONCLUSIONS
Cement provides stable fixation of the tibial component in canine TKR.


CONCLUSIONS
Cemented TKR yields adequate clinical function and stifle joint excursion in the dog. Clinical studies are needed to determine the long-term fate of cemented TKR implants, to assess the influence of implant design on implant fixation and wear, and to obtain objective functional data.
Allen
Matthew J
MJ
Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, OH, USA. allen.1243@osu.edu
Leone
Kendall A
KA
Lamonte
Kimberly
K
Townsend
Katy L
KL
Mann
Kenneth A
KA
D000818:Animals; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods / Q000662:veterinary*; D001843:Bone Cements / Q000627:therapeutic use*; D004285:Dogs; D007720:Knee Prosthesis / Q000009:adverse effects / Q000662:veterinary*; D008297:Male; D013264:Stifle / Q000601:surgery*
D001843:Bone Cements