Joint Implants TRIZ Cases

This spinal fusion implant separates bone-contacting and support members to expand fusion space while maintaining structural stability.

Trial implants help surgeons assess mobility and muscle tension before choosing a glenoid implant.

An eccentric depression and raised lateral bearing surface improve capitellar tracking and reduce radial head prosthesis dislocation.

This case uses a guide pin and modular glenoid components to improve reproducible alignment in deficient bone with less removal.

Differential compartments, angled tracks, and corner reliefs improve knee articulation while simplifying tibial bearing implantation.

A pivotable, rotatable driver and detachable guide improve cervical access and visibility during spinal fixation.

This hinged knee prosthesis uses curved condyles to restore axial rotation and A/P translation while reducing wear and soft-tissue forces.

Segmented vertebral prosthesis uses hydraulic suspension to support natural motion.

A rotatable knob adjusts jaw spacing while a spring-loaded link maintains clamping force for easier implant extraction.

A framed intervertebral implant uses transverse supports to preserve disc height, secure positioning, and support bone integration.

A variable-width fixation feature distributes engagement in the bone bore, supporting implant stability without multiple damaging fasteners.

This case shows how a central ramp expands an endoscopic fusion implant in situ, maintaining disc spacing and spinal stability.

A threaded rod expands the cage after endoscopic placement, creating a larger chamber for bone grafting and fusion support.

A modular shaft, polymeric grip, and locking nut enable disassembly for sterilization while maintaining a non-rotating grip.

A movable spacer and locking shaft simplify femoral offset selection while limiting repeated hip assembly and tissue disruption.

Pre-shaped blocks expand inside vertebrae to bear compressive loads and support bone healing without cement leakage.

A movable blade within the trial sizer combines implant sizing and guided bone cutting, streamlining intervertebral disc implantation.

Engagement features and a hinge post let one constrained knee prosthesis balance rotational control with mobile or fixed bearing options.

Resilient clip arms clamp medial and lateral tibial bearings, supporting secure fixation and quick thickness trials through small incisions.

A helical-cut screw and ramp provide discrete height adjustment, easing knee arthroplasty trial insertion and fit assessment.

U-shaped carbon-fiber or PEEK subunits provide broad tibial cortical support while limiting tissue damage during osteotomy recovery.

A modular sensor module attaches separately from an orthopedic implant, enabling real-time data collection across implant designs.

Preoperative virtual planning and robotic bone preparation improve augment placement accuracy in complex hip arthroplasty.

A transmission belt links drive and follower gears to expand endplates and maintain distraction force under load.

A shared interface and modular kit simplify implantation of stemmed and stemless humeral anchors for anatomical and reverse reconstruction.

This case integrates deployable fixation members into an interbody spacer to secure vertebrae with less anterior obstruction and dissection.

A stiff titanium-alloy socket and reshapeable pure-titanium brackets balance robustness, biocompatibility, and pelvic fit.

Biocide and barrier layers protect UHMWPE implants from oxidation and wear.

This case uses LDFA and MPTA to restore pre-disease knee alignment and guide resection for balanced joint kinematics.

This shoulder case uses mechanical interengagement and segmented fixation to prevent glenoid implant rotation and disengagement.

Movable blocks and vertical guides let one spinal cage fit varied vertebral spacings while limiting instability and inventory needs.

A mounting plate, short implant body, and nested Morse-taper adapter support stable attachment with less bone removal.

A framed intervertebral implant separates load-bearing supports from open-pore regions to preserve disc height and enable bone ingrowth.

An articulating implant expands in perpendicular directions to restore disc height and accommodate varying lordotic angles.

A hinged control assembly moves the upper support to adjust lordosis while the implant expands for spinal stability.

A wedge, sliding frames, and dual set screws control endplate spacing and inclination to limit subsidence and implant shifting.

Deformable lattice and resonating elements modulate graft strain and vibrational loads while maintaining support for interbody fusion.

Compound-angle rods enable in-situ height and width expansion for spinal fusion support.

A coupling mechanism and extendable tabs stabilize the fusion device, reduce slippage, and help retain graft material between vertebrae.

A modular femoral sizer uses one reversible guide for both knees, reducing setup complexity and improving landmark visibility.

A metal handle and polymer insert improve knee implant impact control.

A fixed femoral trial coordinates reaming, modular adapters, and alignment to manage bone loss during revision knee prosthesis implantation.

This case combines implant and anchor insertion in one guided instrument to maintain spacing and support stable bony fusion.

A press-fit coral-derived substrate supports cell growth while precise trimming positions the implant below the cartilage surface.

A guided reaming instrument forms offset knee bone voids accurately, reducing freehand removal and iterative fitting adjustments.

Distance sensing in the trial head provides real-time alerts for hip impingement or dislocation during range-of-motion testing.

This case uses separately selected medial and lateral inserts to restore the joint line while limiting bone loss and surgery time.

A rim plate guides pilot drilling before tool insertion, enabling controlled liner removal from implanted acetabular shells.

A compact delivery approach preloads bone growth material and expands the implant for fusion through minimally invasive access.

Controlled release and distraction wedges simplify prosthetic disc placement and core removal.