Effect of tibial tuberosity advancement on the contact mechanics and the alignment of the patellofemoral and femorotibial joints.

Objective: To evaluate the effect of tibial tuberosity advancement (TTA) on patellofemoral (PF) contact mechanics, and alignment of the PF and femorotibial (FT) joints in cranial cruciate ligament (CrCL)-deficient stifles of dogs.

Study Design: Ex vivo biomechanical study.

Animals: Unpaired cadaveric hind limbs (n=9).

Fixation of pelvic floor fractures in cats.

Objectives: To retrospectively evaluate the outcome of internal fixation of trauma- related pelvic floor fractures using a ventral abdominal approach in cats.

Methods: Clinical examination and radiographic findings at presentation, after surgery, and at follow-up were assessed. Information gathered included concurrent injuries, surgical technique used, lameness and pain scores, and radiographic signs of implant stability.

Effect of tibial tuberosity advancement on femorotibial shear in cranial cruciate-deficient stifles. An in vitro study.

Objectives: This in vitro study compares the femorotibial shear in canine stifles with intact and transected cranial cruciate ligaments (CrCL), before and after tibial tuberosity advancement (TTA) by measuring the distance between origin and insertion of the cruciate ligaments.

Methods: Radiodense markers were inserted into bones at the attachment sites of the cruciate ligaments in sixteen cadaveric stifles of adult dogs. Each stifle was then mounted in a testing apparatus.

Inclination of the patellar ligament in relation to flexion angle in stifle joints of dogs without degenerative joint disease.

Objective: To measure the angles between the patellar ligament and the tibial plateau and between the patellar ligament and the common tangent at the tibiofemoral contact point (TFCP) throughout the full range of motion of the stifle joint in dogs and determine the flexion angles at which the patellar ligament is perpendicular to the tibial plateau or to the common tangent.

Sample Population: 16 hind limbs from cadavers of 9 adult dogs without radiographically detectable degenerative joint disease.

Procedures: Mediolateral radiographic views of the stifle joints from full extension through full flexion were obtained (10 degrees increments).