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Surgical treatment of medial patellar luxation without femoral trochlear groove deepening procedures in dogs: 91 cases (1998-2009).

Authors: Linney WR, Hammer DL, Shott S.

Journal: JAVMA

OBJECTIVE:
To assess signalment, outcomes, and complications for dogs surgically treated for medial patellar luxation (MPL) with a combination of lateral retinacular imbrication and tibial crest transposition procedures without femoral trochlear groove deepening techniques, and to determine whether osteoarthritis progressed in these patients during the 8-week period following surgery.
DESIGN:
Retrospective case series. Animals-91 dogs.
PROCEDURES:

Category: Knee - Tendon and Ligament Injuries

Preliminary experience of a modified Maquet technique for repair of cranial cruciate ligament rupture in dogs.

Authors: Etchepareborde S, Brunel L, Bollen G, Balligand M.

Journal: VCOT

The modified Maquet technique (MMT) uses the same principle as the tibial tuberosity advancement (TTA) for stabilization of the cranial cruciate ligament-deficient stifle in the dog. In the MMT, the tibial tuberosity is advanced in a similar manner to that used in the TTA, however the means by which the tibial crest is stabilized differs. The plate and fork originally described by Montavon et al. are not used (7).

Category: Fracture Fixation and Implants - Knee - Tendon and Ligament Injuries

Ex Vivo Biomechanical Evaluation of the Canine Cranial Cruciate Ligament-Deficient Stifle with Varying Angles of Stifle Joint Flexion and Axial loads after Tibial Tuberosity Advancement.

Authors: Hoffmann DE, Kowaleski MP, Johnson KA, Evans RB, Boudrieau RJ.

Journal: Vet Surg

Objective: To evaluate the effect of tibial tuberosity advancement (TTA) on cranial tibial thrust (CrTT), retropatellar force (RPF), patellar tendon load (PTL), and patellar tendon angle determined by the tibial plateau angle (PTA(TPA) ) method or common tangent (PTA(CT) ) method in the canine cranial cruciate ligament (CrCL)-deficient stifle joint. Study Design: Ex vivo cadaver study. Sample Population: Cadaveric canine hind limbs (n=30).

Category: Knee

Multivariate analysis of morphometric characteristics to evaluate risk factors for cranial cruciate ligament deficiency in labrador retrievers.

Authors: Ragetly CA, Evans R, Mostafa AA, Griffon DJ.

Journal: Vet Surg

Objectives: To determine the combination of conformation characteristics of the pelvic limbs of Labrador Retrievers that best discriminates between limb at risk to develop cranial cruciate ligament (CCL) disease and limbs at low risk using radiographs, computerized tomography (CT) images, and dual-energy X-ray absorptiometry (DEXA). Study Design: Cross-sectional clinical study. Animals: Twelve clinically normal and 9 unilaterally CCL-deficient Labrador Retrievers.

Category: Knee

Mechanical comparison of two suture constructs for extra-capsular stifle stabilization.

Authors: Cabano NR, Troyer KL, Palmer RH, Puttlitz CM, Santoni BG.

Journal: Vet Surg

Objective: Mechanical evaluation of 2 suture constructs for extracapsular stifle stabilization. Study Design: In vitro study. Sample Population: Crimped interlocking loop constructs (ILC) of 45 kg nylon leader line (NLL) and Orthofiber(®) (OF). Methods: ILC were tightened to 100 N, then crimp secured. Ramp to failure (n=10/group)-Data were derived from force/displacement plots. Stress-relaxation testing (n=10/group)-ILC's were nondestructively loaded and held at resultant displacement as force data were recorded.

Category: Fracture Fixation and Implants - Knee

Stifle synovial cyst in a Labrador Retriever with concurrent cranial cruciate ligament deficiency.

Authors: Franklin AD, Havlicek M, Krockenberger MB.

Journal: VCOT

A seven-year-old Labrador Retriever dog was presented with the complaint of chronic left hindlimb lameness. A diagnosis of partial rupture of the left cranial cruciate ligament with concurrent cranio-medial synovial cyst formation was made. This cystic structure was assumed to be communicating with the stifle joint. There was no evidence of a meniscal tear, but superficial fibrillation of the axial border was present. Surgical excision of the cyst with concurrent treatment of the cranial cruciate ligament deficiency by tibial tuberosity advancement was performed with a successful outcome.

Category: Knee - Tendon and Ligament Injuries

Update on the aetiopathogenesis of canine cranial cruciate ligament disease.

Authors: Comerford EJ, Smith K, Hayashi K.

Journal: VCOT

Cranial cruciate ligament disease (CCLD) is the most common cause of hindlimb lameness in the dog, being associated with and eventually leading to stifle osteoarthritis. Canine cranial cruciate ligament disease is a gradual degeneration of the ligament extracellular matrix (ECM) leading to ligament rupture. The aetiopathogenesis of this condition is still poorly understood but several risk factors have been identified such as breed, bodyweight, gender and conformation.

Category: Biologics - Knee - Tendon and Ligament Injuries

Radiographic quantitative assessment of cranial tibial subluxation before and after tibial plateau leveling osteotomy in dogs.

Authors: Kim SE, Lewis DD, Pozzi A, Seibert RL, Winter MD.

Journal: AJVR

OBJECTIVE: To determine the influence of stifle joint flexion angle, cranial cruciate ligament (CrCL) integrity, tibial plateau leveling osteotomy (TPLO), and cranial tibial subluxation on the distance between the location of the origin and insertion of the CrCL (CrCL(d)) in dogs.

Category: Imaging - Knee - Tendon and Ligament Injuries

Tibial tuberosity transposition-advancement for treatment of medial patellar luxation and concomitant cranial cruciate ligament disease in the dog: Surgical technique, radiographic and clinical outcomes

Authors: R. Yeadon (1), N. Fitzpatrick (1), M. P. Kowaleski (2)

Journal: VCOT

Objective: To report surgical technique, morphometric effects and clinical outcomes for tibial tuberosity transposition-advancement (TTTA), sulcoplasty and para-patellar fascial imbrication for management of concomitant medial patellar luxation (MPL) and cranial cruciate ligament (CCL) disease in 32 dogs. Study design: Case series. Methods: A previous technique for tibial tuberosity advancement was modified to incorporate lateral and distal tibial tuberosity transposition.

Category: Knee

Theoretical discrepancy between cage size and efficient tibial tuberosity advancement in dogs treated for cranial cruciate ligament rupture

Authors: S. Etchepareborde (1), J. Mills (2), V. Busoni (3), L. Brunel (1), M. Balligand (1)

Journal: VCOT

Objectives: To calculate the difference between the desired tibial tuberosity advancement (TTA) along the tibial plateau axis and the advancement truly achieved in that direction when cage size has been determined using the method of Montavon and colleagues. To measure the effect of this difference on the final patellar tendon-tibial plateau angle (PTA) in relation to the ideal 90°.

Category: Knee