The Effect of Sliding Humeral Osteotomy (SHO) on Frontal Plane Thoracic Limb Alignment: An Ex Vivo Canine Cadaveric Study

Breiteneicher, Adam H.; Norby, Bo; Schulz, Kurt S.; Kerwin, Sharon C.; Hulse, Donald A.; Fox, D. B.; Saunders, W. B.

doi:10.1111/vsu.12574

Cited by 8 publications

(23 citation statements)

References 35 publications

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“…Fifteen pair of thoracic limbs from skeletally mature Labrador retrievers (body weight, 30‐50 kg) were acquired from a commercial vendor (Skulls Unlimited International, Oklahoma City, Oklahoma). Thoracic limbs were stored at −20°C, thawed at room temperature, and prepared as previously described 22 . Orthogonal radiographs were obtained to screen for preexisting pathology.…”

Section: Methodsmentioning

confidence: 99%

“…The proximal end of the PVC pipe was secured within the collar on the mounting fixture of the loading platform of a custom limb press 22 . Each limb was positioned in a standing posture with the shoulder, elbow, and carpus in normal flexion or extension, 7,27,34,36,37 and the foot was allowed to reach its natural contact point with the base plate of the limb press.…”

Section: Methodsmentioning

confidence: 99%

“…Each limb was positioned in a standing posture with the shoulder, elbow, and carpus in normal flexion or extension, 7,27,34,36,37 and the foot was allowed to reach its natural contact point with the base plate of the limb press. The base plate was equipped with a 1‐cm textured grid, which was used to determine foot lateralization and external rotation relative to the sagittal plane as previously described 22 . Initial axial alignment of the point of the shoulder and foot were confirmed using a plumb line secured to the loading platform to position the foot such that the center of the foot was located beneath the humeral head.…”

Section: Methodsmentioning

confidence: 99%

“…Limb alignment is assessed with standing imaging 14,15,17,18 . The CORA method has been adapted to small animal orthopedics to evaluate limb alignment of both the thoracic and pelvic limbs 19‐22 . While most of these studies used cadaveric specimens or clinical animals in recumbency, one study described a technique to assess frontal plane thoracic limb alignment in healthy Labrador retrievers, both standing and in recumbency 19 …”

Section: Introductionmentioning

confidence: 99%

“…It has been suggested that PAUL produces 4° to 6° of ulnar abduction, resulting in abduction of the limb and reduction of the moment between the center of the elbow and the weight‐bearing axis of the limb 30 . More recently, the effect of SHO on thoracic limb alignment was evaluated in the ex vivo setting by using the CORA method in both standing and recumbent limb positions 22 …”

Section: Introductionmentioning

confidence: 99%

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Effect of proximal abducting ulnar osteotomy (PAUL) on frontal plane thoracic limb alignment: An ex vivo canine study

et al. 2020

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Objective: To determine the effect of proximal abducting ulnar osteotomy (PAUL) on frontal plane thoracic limb alignment in standing and recumbent positions. Study design: Ex vivo cadaveric study. Sample population: Canine thoracic limbs (n = 15 limb pairs). Methods: Limbs were acquired from healthy Labrador retrievers that had been euthanized for reasons unrelated to this study. A limb press was used to obtain standing and recumbent caudocranial radiographs before and after PAUL. Foot lateralization and rotation were directly measured in standing position. Mechanical joint angles were determined using full limb radiographic montages and the center of rotation of angulation (CORA) method for pre-PAUL (Pre), 2-mm PAUL (PAUL2), and 3-mm PAUL (PAUL3). Data are reported as mean ± SD and 95% CI. Mixed linear modeling was used to identify differences in limb alignment values and foot position, with significance established at P ≤ .004. Results: There were differences in five of 12 limb alignment values pre-PAUL and post-PAUL in standing and recumbent positions. In the standing position, there was an increase in mechanical medial proximal radioulnar angle (Pre,

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of proximal abducting ulnar osteotomy (PAUL) on frontal plane thoracic limb alignment: An ex vivo canine study

et al. 2020

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Canine Elbow Dysplasia

Bruecker

Benjamino

Vezzoni³

et al. 2021

Veterinary Clinics of North America: Small Animal Practice

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Effect of Medial Opening Wedge and External Rotational Humeral Osteotomies on Medial Elbow Compartment Pressure: An Ex Vivo Study

Crystal,

Brettle,

Maddox

et al. 2024

Vet Comp Orthop Traumatol

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Objective The aim of this study was to assess if the level of osteotomy (50 or 75% the length of the humerus), osteotomy angle (5, 10, or 20 degrees), direction of bone alteration (external rotational or medial opening wedge osteotomies), or orientation of osteotomy (perpendicular to the humeral long axis or perpendicular to the weight-bearing axis of the limb) affect pressure through the medial compartment of the elbow. Study Design Humeral osteotomies were performed at 50 and 75% the length of the humerus on 12 canine cadaver thoracic limbs and patient-specific three-dimensional (3D) printed plates applied to induce the desired alteration. Sensors were placed into the medial and lateral aspects of the elbow joint and the limb compressed to 90 N in a universal testing system. Results Increasing the angle of the induced change had a significant effect on the decreased load through the medial compartment. Performing the osteotomy at 75% of humeral length from proximal was significantly more effective at reducing the medial elbow load than performing it at 50%. Opening wedge osteotomies were more effective than external rotational osteotomies, but both were effective. Changing the direction of the osteotomy (comparing transverse to oblique) did not significantly affect the load reduction through the medial compartment. Conclusion Performing an osteotomy at a more distal location along the humerus and increasing the angle of the induced change increased the effectiveness of load-shifting humeral osteotomies.

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The Effect of Sliding Humeral Osteotomy (SHO) on Frontal Plane Thoracic Limb Alignment: An Ex Vivo Canine Cadaveric Study

Abstract: SHO resulted in significant alteration in frontal plane thoracic limb alignment. Additional studies are necessary to determine if the changes reported using our ex vivo model occur following SHO in vivo.

Cited by 8 publications

References 35 publications

Effect of proximal abducting ulnar osteotomy (PAUL) on frontal plane thoracic limb alignment: An ex vivo canine study

Effect of proximal abducting ulnar osteotomy (PAUL) on frontal plane thoracic limb alignment: An ex vivo canine study

Canine Elbow Dysplasia

Effect of Medial Opening Wedge and External Rotational Humeral Osteotomies on Medial Elbow Compartment Pressure: An Ex Vivo Study

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