Analysis of the fit of modern pre-contoured distal femur plates: Expect an imperfect contour

Bedard, Julia C.; Tanner, Stephanie L.; Cameron, James I.; Jeray, Kyle J.; Adams, John D.

doi:10.1016/j.injury.2020.01.009

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…11 The authors concluded that current precontoured plates were undercontoured and predisposed to malreduction. 11 Bedard et al 12 showed similar results with a mean plate-to-bone distance between 5.5 and 9.2 mm.…”

Section: Discussionmentioning

confidence: 72%

Axial and Rotational Malreduction (Golf Club Deformity) in Distal Femur Fractures

Lowe

Alhandi

Manoharan

et al. 2022

Journal of Orthopaedic Trauma

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Objectives: To describe malreduction of supracondylar distal femur fractures stabilized with lateral femoral locking plates and determine whether a mismatch in axial lateral distal femur anatomy and lateral distal femoral plate design contributes to supracondylar distal femoral fracture malreduction.Materials and Methods: OTA/AO 33A were simulated in 7 cadaver femurs and fixed with a lateral distal locking femoral plate placed flush to the lateral femoral condyle (group 1). In group 2, the anterior flange of the plate was externally rotated 10 degrees in relation to the lateral condyle. A motion capture system measured translation and rotation of the articular segment as shaft screws were applied, reducing plate to femoral diaphysis. Articular segment movement was compared between groups using paired Student t test, P , 0.05. A large database of 3D scans of 800 femurs was used to define the relationship of the lateral femoral condyle to the lateral cortical surface of the human femur.Results: Malreduction was observed with anatomic plate application results from medial translation (17 mm) and external rotation (12.2 degrees) (group 1). Modifying plate geometry to match lateral femur anatomy (group 2) improved medial translation by 46% and external rotation by 80%. An analysis of the shape of the 800 distal femurs showed that the average posterior anterior inclination is 16.5 degrees.Conclusions: Anatomic application of distal femoral plates results in significant malreduction. Modifying the plate design to accommodate 10 degrees slope of lateral distal femur results in partial correction of deformity. Future studies should investigate other means of correcting the malalignment, especially considering the 16.5-degree posterior anterior inclination of the condyle.

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Section: Discussionmentioning

confidence: 72%

Axial and Rotational Malreduction (Golf Club Deformity) in Distal Femur Fractures

Lowe

Alhandi

Manoharan

et al. 2022

Journal of Orthopaedic Trauma

View full text Add to dashboard Cite

show abstract

“…Nowadays, we have a rich armamentarium of the fracture specific plates in fracture surgery. Not surprisingly, there are more and more reports of unfitting of the designed implants to the specific anatomical site (2). Fortunately, we rarely need the design of the plate which cannot be modeled from the existing plates in our osteosynthesis sets.…”

Section: X-ray Image Of the Fracture (A B) Based On Preoperative Plan...mentioning

confidence: 99%

Preoperative Planning in Fracture Surgery: Current Concepts and Future Perspectives

Kristan¹,

Cimerman²,

Tomaževič³

2022

Acta Chir. orthop. Traum. Cech.

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Malunions of the Distal Femur

Hand¹,

Agarwal²

2020

Malunions

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Analysis of the fit of modern pre-contoured distal femur plates: Expect an imperfect contour

Cited by 6 publications

References 10 publications

Axial and Rotational Malreduction (Golf Club Deformity) in Distal Femur Fractures

Axial and Rotational Malreduction (Golf Club Deformity) in Distal Femur Fractures

Preoperative Planning in Fracture Surgery: Current Concepts and Future Perspectives

Malunions of the Distal Femur

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