Deformity

Authors: McCartney WT.
Journal: VCOT

OBJECTIVE: To report three clinical cases suffering from limb shortening secondary to monostotic physeal closure, in which distraction osteogenesis had been performed without a latency period and with high distraction rates. METHODS: Three dogs had limb lengthening performed, using an Ilizarov ring fixator in two dogs and a linear dynamic fixator in the other dog. Bone lengthening achieved for a radius/ulna was 27 mm at 2 mm per day , a tibia was 78 mm at 3 mm per day, and a femur of 45 mm was 3 mm per day .

Authors: DAVID I. DISMUKES, DVM 1 , DEREK B. FOX, DVM, PhD, Diplomate ACVS 1 , JAMES L. TOMLINSON, DVM, MVSc, Diplomate ACVS 1 , JAMES L. COOK, DVM, PhD, Diplomate ACVS 1 , and STEPHANIE C. ESSMAN, DVM, MS, Diplomate ACVR 1
Journal: Vet Surg

ABSTRACT
Objectives—To report a method for radiographic determination of the mechanical axis of the canine pelvic limb and its relationship to the joints and bone axes. To report reference ranges for the relationships between the axes of the pelvic limb and for joint position relative to the pelvic limb axis.
Study Design—Cadaveric radiographic anatomic study.
Animals—Pelvic limbs (n=101) from normal midsized to large breed dogs; tibiae (n=105) from dogs with cranial cruciate ligament disease (previous study).

Category: Deformity - Imaging - Knee
Authors: Rørvik AM, Teige J, Ottesen N, Lingaas F.
Journal: JAVMA

OBJECTIVE: To determine clinical, radiographic, and pathologic abnormalities in dogs with multiple epiphyseal dysplasia (MED). DESIGN: Retrospective case series. ANIMALS: 19 dogs with MED from 10 litters. PROCEDURES: The diagnosis was made on the basis of radiographs of the shoulder region and vertebral column. Ten dogs underwent necropsy. RESULTS: There were 11 Hygenhund, 6 Dunker, 1 Golden Retriever, and 1 English Pointer. Most dogs were examined because of lameness that developed at 5 to 8 months of age.

Authors: Vezzoni A, Bohorquez Vanelli A, Modenato M, Dziezyc J, Devine Slocum T.
Journal: VCOT

The purpose of this study was to evaluate the ability of proximal tibial epiphysiodesis to reduce the tibial plateau slope in young dogs with cranial cruciale ligament (CCL) deficient stifles. Of the 14 treated dogs, eight had a bilateral injury, for a total of 22 joints. After physical and radiographical examination and measurement of tibial plateau slope, all of the dogs underwent surgery.

Authors: STACY D. MEOLA, DVM, MS 1 , JASON L. WHEELER, DVM, Diplomate ACVS 1 , and CASSIDY L. RIST, DVM 1
Journal: Vet Surg

ABSTRACT
Objective—To validate a technique to assess radial torsion with and without procurvatum and valgus deformity using computed tomography (CT).
Study Design—Anatomic study.
Animals—Radii (n=3) from normal dogs.

Authors: JEAN-BENOIT G. N. G. LEFEBVRE, DMV 1,2,3 , THOMAS R. A. ROBERTSON, MA, VetMB, Cert VDI 1,2,3 , STEPHEN J. BAINES, MA, VetMB, Cert VR, Cert SAS, PhD, Diplomate ECVS 1,2,3 , NICHOLAS D. JEFFERY, BVSc, Cert SAO, DSAS(Soft Tissue), PhD, Diplomate ECVS & ECVN,
Journal: Vet Surg

ABSTRACT
Objective—To evaluate the effect of fracture and subsequent repair on future bone growth of the humerus after Salter–Harris type IV fracture of the lateral part of the humeral condyle (LPHC).
Study Design—Prospective study.
Animals—Dogs (n=11).
Methods—Dogs that had LPHC fracture and an open distal humeral physis repaired (1992–2006) were re-examined and radiographed at ≥12 months of age and humeral length was measured.

Authors: Marcellin-Little DJ, Harrysson OL, Cansizoglu O.
Journal: AJVR

OBJECTIVE: To design and manufacture custom titanium bone plates and a custom cutting and drill guide by use of free-form fabrication methods and to compare variables and mechanical properties of 2 canine tibial plateau leveling methods with each other and with historical control values. SAMPLE POPULATION: 10 canine tibial replicas created by rapid prototyping methods.

Authors: Nelligan MR, Wheeler JL, Lewis DD, Thompson MS.
Journal: Aust Vet J

An 8-month-old castrated male Saint Bernard was evaluated for bilateral hind limb lameness. Lameness was ascribed to bilateral metatarsal rotational abnormalities on the basis of the physical examination and radiographic evaluations. Staged, bilateral deformity correction and tarsometatarsal arthrodeses were performed using circular external skeletal fixators. The dog's gait improved following surgery and the fixators were removed 3 (left hind paw) and 4 (right hind paw) months following surgery.

Authors: Drygas KA, Taylor R, Sidebotham CG, Hugate RR, McAlexander H.
Journal: Vet Surg

OBJECTIVE: To report surgical planning, technique, and long-term outcome of custom transcutaneous tibial implants used to restore ambulation after bilateral pelvic limb amputation in a dog. STUDY DESIGN: Case report. ANIMALS: A 4-year-old, 25.5 kg, female spayed, Siberian Husky. METHODS: Computed tomographic scans of the pelvic limbs were used to build sterolithographic models of the remaining tibia after bilateral amputation of the distal aspect of the tibiae. The sterolithographic models facilitated fabrication of implants that would replace the missing distal segments of the tibiae.