A biomechanical comparison of four fixed-angle dorsal plates in a finite element model of dorsally-unstable radius fracture

Knežević, Josip; Kodvanj, Janoš; Čukelj, Fabijan; Pamuković, Frane; Pavić, Arsen

doi:10.1016/s0020-1383(17)30738-6

Cited by 11 publications

(8 citation statements)

References 33 publications

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“…According to similar studies on the stability of fixation implants [34,37], the following boundary conditions were imposed to the FEM models: the tibia was locked at its lower end, and a displacement along its main longitudinal axle was imposed on top of the fractured part of the tibia (Figure 8). In According to previous studies [17,34,35], a bonded contact was imposed at the screw/bone interface and a frictional surface-to-surface contact was used at the bone/plate and bone/bone interfaces. The friction coefficients of the bone/bone and bone/plate interfaces were 0.45 and 0.3 respectively [17,34,35].…”

Section: Fem Analysesmentioning

confidence: 99%

“…In According to previous studies [17,34,35], a bonded contact was imposed at the screw/bone interface and a frictional surface-to-surface contact was used at the bone/plate and bone/bone interfaces. The friction coefficients of the bone/bone and bone/plate interfaces were 0.45 and 0.3 respectively [17,34,35]. As for the contact algorithm, the augmented Lagrangian method was used [36].…”

Section: Fem Analysesmentioning

confidence: 99%

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Influence of the Screw Positioning on the Stability of Locking Plate for Proximal Tibial Fractures: A Numerical Approach

et al. 2020

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Tibial fractures are common injuries in people. The proper treatment of these fractures is important in order to recover complete mobility. The aim of this work was to investigate if screw positioning in plates for proximal tibial fractures can affect the stability of the system, and if it can consequently influence the patient healing time. In fact, a more stable construct could allow the reduction of the non-weight-bearing period and consequently speed up the healing process. For that purpose, virtual models of fractured bone/plate assemblies were created, and numerical simulations were performed to evaluate the reaction forces and the maximum value of the contact pressure at the screw/bone interface. A Schatzker type I tibial fracture was considered, and four different screw configurations were investigated. The obtained results demonstrated that, for this specific case study, screw orientation affected the pressure distribution at the screw/bone interface. The proposed approach could be used effectively to investigate different fracture types in order to give orthopaedists useful guidelines for the treatment of proximal tibial fractures.

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Section: Fem Analysesmentioning

confidence: 99%

Section: Fem Analysesmentioning

confidence: 99%

Influence of the Screw Positioning on the Stability of Locking Plate for Proximal Tibial Fractures: A Numerical Approach

et al. 2020

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“…Distal radius fractures are one of the most common skeletal injuries of the wrist, accounting for 14–18% of all fractures in adults [ 1 , 2 ]. Most distal radius fracture occur in elderly patients, with an increasing incidence in aging populations.…”

Section: Introductionmentioning

confidence: 99%

Functional outcomes following fixation of a marginal distal radius fracture with two commonly used volar locking plates: a retrospective cohort study

Huang

Chen

Lin

et al. 2022

BMC Musculoskelet Disord

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Introduction The volar locking plate has been widely used for unstable distal radius fractures to provide early recovery of wrist function. Volar plate prominence to the watershed line has been reported to be related to flexor tendon irritation, and avoid implant prominence in this area was suggested. On the other hand, marginal distal radius fracture patterns required the plate to cross the watershed line, making conflict over plate positioning on marginal distal radius fractures. This study compared functional outcomes in patients with marginal distal radius fractures treated with two different implants. Materials and methods A retrospective study was conducted, all patients who received a Synthes 2.4 mm LCP or an Acumed Acu-Loc VLP between January 2015 and December 2018 were reviewed. The marginal distal radius fracture pattern was the most distal horizontal fracture line within 10 mm of the lunate fossa’s joint line. The primary outcomes including patient-reported pain scores, range of motion, and grip strength were assessed. Secondary outcomes included patient-based subjective satisfaction scores of the injured wrist and hand function. The Mayo Wrist Score and the requirement for a secondary procedure related to hardware complications were also recorded. Results Forty-two patients met our inclusion criteria. Twenty-one patients were treated with the Synthes 2.4 mm LCP, and 21 patients with the Acumed Acu-Loc VLP. The primary outcome revealed that post-operative range of motion (P = 0.016) and grip strengths (P = 0.014) were significantly improved in the Acu-Loc VLP group. The MAYO wrist score in the Acu-Loc VLP group was also significantly better (P = 0.006). Conclusions Despite advances in implant designs, flexor tendon irritation or rupture is still a complication following distal radius’s volar plating. We believe the Acumed Acu-Loc VLP design provided better functional outcomes than the Synthes 2.4 mm LCP if appropriately and carefully placed into its designed-for position. This positioning results in promising patient satisfaction when treating marginal distal radius fractures.

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“…Distal radius fractures are one of the most common skeletal injuries of the wrist, accounting for 14-18% of all fractures in adults (1,2). Most distal radius fracture occur in elderly patients, with an increasing incidence in aging populations.…”

Section: Introductionmentioning

confidence: 99%

Functional Outcomes Following Fixation of an Ultra-distal Radius Fracture with Two Commonly used Volar Locking Plates: A Retrospective Cohort Study

Huang

Chen

Lin

et al. 2021

Preprint

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Introduction: The volar locking plate has been widely used for unstable distal radius fractures to provide early recovery of wrist function. Volar plate prominence to the watershed line has been reported to be related to flexor tendon irritation, and avoid implant prominence in this area was suggested. On the other hand, ultra-distal radius fracture patterns required the plate to cross the watershed line, making conflict over plate positioning on ultra-distal radius fractures. This study compared functional outcomes in patients with ultra-distal radius fractures treated with two different implants.Materials and Methods: A retrospective study was conducted, all patients who received a Synthes 2.4mm LCP or an Acumed Acu-Loc VLP between January 2015 and December 2018 were reviewed. The ultra-distal fracture pattern was the most distal horizontal fracture line within 10 mm of the lunate fossa's joint line. The primary outcomes including patient-reported pain scores, range of motion, and grip strength were assessed. Secondary outcomes included patient-based subjective satisfaction scores of the injured wrist and hand function. The Mayo Wrist Score and the requirement for a secondary procedure related to hardware complications were also recorded. Results: Forty-two patients met our inclusion criteria. Twenty-one patients were treated with the Synthes 2.4 mm LCP, and 21 patients with the Acumed Acu-Loc VLP. The primary outcome revealed that post-operative range of motion (P = 0.016) and gripping strengths (P = 0.014) were significantly improved in the Acu-Loc VLP group. The MAYO wrist score in the Acu-Loc VLP group was also significantly better (P = 0.006). Conclusions: Despite advances in implant designs, flexor tendon irritation or rupture is still a complication following distal radius's volar plating. We believe the Acumed Acu-Loc VLP design provided better functional outcomes than the Synthes 2.4 mm LCP if appropriately and carefully placed into its designed-for position. This positioning results in promising patient satisfaction when treating ultra-distal radius fractures.

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A biomechanical comparison of four fixed-angle dorsal plates in a finite element model of dorsally-unstable radius fracture

Cited by 11 publications

References 33 publications

Influence of the Screw Positioning on the Stability of Locking Plate for Proximal Tibial Fractures: A Numerical Approach

Influence of the Screw Positioning on the Stability of Locking Plate for Proximal Tibial Fractures: A Numerical Approach

Functional outcomes following fixation of a marginal distal radius fracture with two commonly used volar locking plates: a retrospective cohort study

Functional Outcomes Following Fixation of an Ultra-distal Radius Fracture with Two Commonly used Volar Locking Plates: A Retrospective Cohort Study

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