Biplanar Offset Periarticular Bone Plate for Tibial Seating
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Solution Overview
Problem
Current bone plates for the proximal tibia often fail to accommodate the anatomical contours properly, leading to incomplete seating on the bone and irritation of soft tissues due to their offset design, which can cause patient discomfort.
Innovation Solution
A periarticular bone plate with a shaft and head portion offset in both the frontal and parasagittal planes, featuring a concave proximal portion and angled distal portion, along with multifunctional holes for secure fastening and reduced tissue irritation, allowing better adaptation to the tibia's anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the head portion is offset from the shaft portion in the frontal plane, then the plate can accommodate the anatomy of the proximal tibia, but the anterior edge of the plate extends too far anteriorly and cannot seat properly on the bone
Solution Approach 1:
The patent applies biplanar offset by offsetting the head portion from the shaft portion in both the frontal plane and the parasagittal plane. This two-dimensional offset configuration allows the plate to accommodate the anatomical contours of the proximal tibia while positioning the anterior edge properly to seat on the bone surface, resolving the contradiction between anatomical adaptation and proper seating.
2Adaptability or versatility
If the head portion is offset from the shaft portion, then the plate can accommodate the anatomy, but the prominence of plate and fasteners in the proximal anterior direction contributes to irritation of soft tissues
Solution Approach 1:
By offsetting the head portion in the parasagittal plane in addition to the frontal plane, the plate relocates the prominent head portion away from the anterior soft tissue structures such as the iliotibial tract. This biplanar configuration maintains anatomical accommodation while reducing soft tissue irritation by positioning the bulk of the plate more posteriorly.
3Adaptability or versatility
If the head portion is offset from the shaft portion, then the plate can accommodate the anatomy, but patient discomfort occurs due to soft tissue irritation
Solution Approach 1:
The biplanar offset configuration offsets the head portion in both frontal and parasagittal planes, which maintains proper anatomical accommodation while relocating the plate structure away from anterior soft tissue attachments. This reduces irritation to structures like the iliotibial tract, thereby reducing patient discomfort while preserving anatomical fit.
Data Source
AI summary
A periarticular bone plate for the internal fixation of a fractured, proximal tibia of a surgical patient includes a shaft member connected to a head member, a top surface, a bottom surface, a posterior edge, an anterior edge and a plurality of holes extending between the top and bottom surfaces for receiving fasteners for attaching the plate to the bone. The head member is offset relative to the shaft member in each of a frontal and sagittal planes of the proximal tibia.