Luxation/Subluxation

Authors: Daniel A McCarthy, L Abbigail Granger, Karanvir S Aulakh, J Alberto Gines

Objective: To improve the accuracy of drilling during the repair of sacroiliac luxations (SILs) with a 3D-printed patient-specific drill guide (3D-GDT) compared to free-hand drilling technique (FHDT).

Study design: Blinded, randomized, prospective ex vivo study.

Sample population: Sixteen canine cadavers (20-25 kg).

Authors: Liene Feldmane, Lars F H Theyse

Objective: To assess the role of the proximodistal and caudocranial relative position of the patellar ligament insertion on the tibia and patellar ligament length-to-patellar length ratio (PLL:PL) in small-breed dogs with and without grade II medial patellar luxation (MPL).

Study design: Retrospective study.

Sample population: Dogs weighing ≤15 kg, including 43 stifles with MPL and 34 control stifles.

Authors: Shinji Yasukawa, Kazuya Edamura, Koji Tanegashima, Mamiko Seki, Kazushi Asano, Tomohiro Nakayama, Kei Hayashi

Objective: The aim of this study was to evaluate the bone deformities of the distal femur of Toy Poodles with medial patellar luxation (MPL) using computed tomography.

Authors: Jorge Espinel Rupérez et al.

Objective: To report overall rate and type of complications and outcomes of cats with coxofemoral luxation managed with hip toggle stabilization (HTS), to compare rate of postoperative complications and outcomes of cats treated with ultrahigh-molecular-weight-polyethylene (UHMWPE) or nylon, and to identify risk factors for reluxation and non-excellent outcomes.

Study design: Multi-institutional retrospective cohort study.

Authors: K. L. Perry L. M. Déjardin

Despite being one of the most commonly diagnosed causes of canine hind limb lameness, the pathogenesis of medial patellar luxation remains incompletely understood. Most cases are considered developmental with anatomical deformities leading to failure of the stifle extensor mechanism. These include coxa vara, coxa valga, reduced anteversion angle, distal external femoral torsion, excessive distal femoral varus, internal proximal tibial torsion, proximal tibial valgus, tibial tuberosity medialisation, patella alta and shallow trochlear groove.

Authors: Richard L Meeson, Rhiannon Strickland
Authors: Dirsko J F von Pfeil, Ezra J Steinberg, David Dycus

Case description: A 7.5-year-old 37.8-kg (83.2-lb) sexually intact male German Shepherd Dog (dog 1) and a 2.6-year-old 28.2-kg (62.0-lb) sexually intact male Dutch Shepherd (dog 2), both apprehension police dogs, were admitted for evaluation of left and right thoracic limb lameness, respectively.

Authors: Tiffany Chen, Georgia Bosscher, Derek Fox, Courtney Arnoldy, Jason Bleedorn

Objective: To report the preoperative evaluation, treatment with transarticular elastic external skeletal fixation (ESF), and outcome of a dog with bilateral medial patellar luxation (MPL) and stifle rotational deformity.

Animal: One nonambulatory, 2.5-month-old, 7.5-kg mixed-breed intact female dog.

Authors: Megan E Mathews, Matthew D Barnhart

Objective: Evaluate the risk factors for reluxation and outcomes for dogs with a toggle rod construct.

Study design: Retrospective case series.

Animals: One hundred twenty-eight client-owned dogs.

Authors: Akari Sasaki, Muneki Honnami, Manabu Mochizuki

Objective To describe the surgical reduction of luxation of the triceps brachii tendon in a dog.

Animal One 2.5‐year‐old 2.58 kg castrated male toy poodle.

Study design Clinical case report.