Joint Implants TRIZ Cases

Orthogonal flat inserts in acetabular hip implants enable controlled multi-axis rotation while preventing dislocation.

Curved blade extractor system with dome guide assembly reduces bone removal during acetabular cup extraction.

A modular elbow prosthesis uses a locking system to secure the humeral head onto the stem.

Elastically pretensioned retaining element prevents uncontrolled dropping of prosthetic joints against gravity while maintaining adjustability.

A trial insert slides transversely into a humeral cup and locks via rotating flanges to secure the assembly.

Asymmetric anti-rotation keys align and lock the acetabular bearing component, resolving installation misalignment risks.

A spinal implant carriage moves within a body portion to expand jaw portions and separate vertebral bodies.

Specialized instrumentation resects the proximal tibia to preserve cruciate ligaments, resolving inadequate proprioception in total knee replacements.

Curved nose portion and dimpled surface ridges facilitate insertion of an expandable spinal implant while inhibiting withdrawal from the disc space.

Modular stems insert through a base component to form friction lock connections, protecting sensitive anatomy from violation during implantation.

Segmenting the bearing into a PEEK homopolymer articular layer and a fiber-reinforced support layer resolves yield strength versus wear resistance trade-offs.