PediLoc® blade plate yields faster consolidation rates than LCP pediatric condylar plate in distal femoral osteotomies: a retrospective comparison and description of surgical technique.
Samuel Tschudi, Cyrill Delay, Britta Krautwurst, Domenic Grisch, Thomas Dreher
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引用次数: 0
Abstract
Background: The PediLoc® Locking Cannulated Blade Plate System was originally designed for proximal femoral osteotomies but has also been used for multidimensional correction of distal femoral deformities. The present study delineates the surgical technique and undertakes a retrospective analysis of the consolidation rates of distal femoral osteotomies performed using the aforementioned system, comparing them with those performed using the DePuy Synthes® 90° LCP Pediatric Condylar Plate. We hypothesized that the semi-rigid design of the blade plate results in faster osteotomy healing rates compared with other locking screw plate systems.
Materials and methods: This retrospective single-centre study included patients who underwent distal femoral osteotomy with the PediLoc® Blade Plate (Blade Plate) and the DePuy Synthes® 90° LCP Pediatric Condylar Plate (90° LCP-PCP) at the University Children's Hospital Zurich (2020-2024). Consolidation rates were assessed using "Regenerating Bone Defects Using New Biomedical Engineering" (REBORNE), "Radiographic Union Score for Tibial Fractures" (RUST) and modified RUST (mRUST) scores at 6 weeks and 3 months postoperatively and compared using using Wilcoxon signed-rank test. For the comparison between both intervention groups, the unpaired t-test was used for normally distributed data and the Mann-Whitney U test for non-normally distributed and ordinal data. For all tests, values of p < 0.05 were considered statistically significant. Geometric planes of osteotomy were analysed, and a stepwise correction technique was described.
Results: A total of 111 osteotomies with complete radiographic follow-up were analysed (77 Blade Plate [69.4%], 34 90° LCP-PCP [30.6%]). At 6 weeks, early consolidation (RUST score ≥ 10) was observed in 39% of Blade Plate cases versus 6% in the 90° LCP group. By 3 months, consolidation reached 91% in the Blade Plate group and 70% in the 90° LCP-PCP group. One Blade Plate case was excluded due to an implant-associated intraoperative fracture.
Conclusions: The PediLoc® Blade Plate facilitates stable, multidirectional correction of distal femoral deformities and achieves earlier radiographic consolidation of osteotomies compared with the 90° LCP-PCP without increased complication rates. Since faster consolidation was observed only in the RUST scores, the clinical relevance of this finding remains to be determined through prospective randomized controlled trials.
Level of evidence: Level III, retrospective comparative study.
Trial registration: Clinicaltrials.gov, 2025-0000, registration date 14 April 2025, retrospectively registered, https://register.
期刊介绍：
The Journal of Orthopaedics and Traumatology, the official open access peer-reviewed journal of the Italian Society of Orthopaedics and Traumatology, publishes original papers reporting basic or clinical research in the field of orthopaedic and traumatologic surgery, as well as systematic reviews, brief communications, case reports and letters to the Editor. Narrative instructional reviews and commentaries to original articles may be commissioned by Editors from eminent colleagues. The Journal of Orthopaedics and Traumatology aims to be an international forum for the communication and exchange of ideas concerning the various aspects of orthopaedics and musculoskeletal trauma.
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