[Loads acting on orthopaedic implants. Measurements and practical applications].

Area of Science:

• Biomechanics and Biomaterials
• Orthopaedic Engineering
• Medical Device Optimization

Context:

• Orthopaedic implants, including joint replacements and internal fixation devices, require precise performance characteristics before clinical use.
• Understanding in vivo loading conditions is crucial for optimizing implant stability, wear, fixation, and kinematics.
• Patient activity levels significantly impact the longevity and success of orthopaedic implants.

Purpose:

• To summarize the technical principles of load measurements in instrumented orthopaedic implants.
• To present design examples of load-measuring instrumented implants.
• To analyze and present key findings from load measurements in various joints and spinal devices.

Summary:

• Load measurements from instrumented hip, shoulder, knee, and spinal implants provide critical data for optimizing device design and clinical application.
• Analysis of in vivo loads helps identify high-stress activities to be avoided by patients, enhancing implant longevity.
• The collected data enables tailored physiotherapy protocols post-joint arthroplasty and fracture treatment.

Impact:

• Optimization of orthopaedic implant design for improved stability, wear resistance, and kinematic function.
• Development of evidence-based patient activity guidelines to maximize implant lifespan.
• Enhancement of rehabilitation strategies through data-driven physiotherapy recommendations for joint arthroplasty and fracture recovery.