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Objective: To determine the biomechanical properties of plating techniques for comminuted feline ilial fractures.
Study Design: Ex vivo study on 40 paired feline hemipelves.
Sample Population: Forty paired fresh-frozen hemipelves that had been collected from 20 cats aged 2-6 years and weighing 4.0-5.5 kg.
Methods: A transverse 3-mm gap was created in each ilium. Hemipelves were fixed with one of the following methods (n = 10 per group): (1) a dorsal plate and nonlocking screws, (2) a lateral plate and nonlocking screws, (3) a lateral plate and locking screws, or (4) a lateral and dorsal locking compression plate using nonlocking screws. Each specimen was subjected to incremental, sinusoidal cyclic loading until failure, defined as 10-mm displacement. The initial stiffness and number of cycles required to reach 1-, 2-, 5-, and 10-mm axial displacement were statistically analyzed.
Results: The initial stiffness and number of cycles to failure were higher in specimens fixed with double nonlocking plates than in all other fixations (P < .05) except specimens fixed with lateral locking plate at 10-mm displacement (P = .44). Locking implants withstood more cycles to 5- (P < .05) and 10-mm (P < .05) displacement compared with other single-plate nonlocking groups. Screw loosening occurred only in the 3 nonlocking fixations.
Conclusion: Double plating improved stiffness and resistance to failure of comminuted feline ilial fracture constructs compared with all other fixations. Single locking plates produced superior constructs compared with single nonlocking constructs.
Clinical Significance: Locking implants are recommended to repair comminuted feline ilial fractures for their extended fatigue life and resistance to screw loosening. Orthogonal plating offers a strong nonlocking alternative.
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http://dx.doi.org/10.1111/vsu.13124 | DOI Listing |
Foot Ankle Orthop
July 2025
Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Background: The choice between locking and nonlocking plates for ankle fracture fixation is guided by implant cost, patient factors, fracture morphology, and clinical outcomes. Locking plates offer increased stability, particularly in osteopenic bone, and are available in low-profile, anatomically precontoured designs, though they are generally less malleable than nonlocking plates and are associated with higher cost. This study evaluates the cost-effectiveness of these methods by PROMIS (Patient-Reported Outcomes Measurement Information System) scores and complication rates.
View Article and Find Full Text PDFJ Hand Surg Asian Pac Vol
July 2025
Department of Orthopaedic Surgery, Yodogawa Christian Hospital, Higashiyodogawa-Ku, Osaka, Japan.
Distal radius fractures are the most common fractures in the upper extremity. Volar plate fixation is a commonly performed surgical procedure for this fracture. Flexor tendon rupture is a serious postoperative complication due to attrition between the plate and tendon.
View Article and Find Full Text PDFVet World
April 2025
Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, 10900, Thailand.
Background And Aim: Canine femoral fractures are prevalent in veterinary medicine, necessitating effective fixation methods to ensure stability and promote healing. Conventional bone plate fixation methods, including non-locking and locking plates, have inherent limitations, such as periosteal damage and mechanical failure. This study aims to evaluate the biomechanical performance of three fixation methods - non-locking bone plates, locking bone plates, and a novel double-rod clamp internal fixation system - using finite element analysis (FEA).
View Article and Find Full Text PDFInjury
August 2025
Department of hand surgery, Beijing Jishuitan Hospital, Capital Medical University, Beijing,China. Electronic address:
Objective: Surgical treatment of scaphoid nonunion after failed screw fixation is a unique challenge for hand surgeons. This retrospective study evaluated the clinical results of revisional reconstruction by a hand trauma plate system with bone grafting for this situation.
Methods: From 2019 to 2022, 12 patients with scaphoid nonunion after failed closed or open reduction and internal fixation surgery were treated with revisional surgery using a 1.
OTA Int
June 2025
Department of Orthopaedic Surgery, Center for Specialized Medicine, St. Louis University Hospital, St. Louis, MO.
Objectives: Multiple treatment modalities exist for treating distal femur fractures. Lateral locked plating has become the method of choice because it prevents loss of reduction due to varus collapse, but has been associated with nonunion rates of up to 30%. Titanium implants may provide a more optimal biomechanical environment for fracture healing.
View Article and Find Full Text PDF