OASIS 1: Retrospective analysis of four different microprocessor knee types.

Area of Science:

• Prosthetics and Orthotics
• Biomedical Engineering
• Rehabilitation Science

Background:

• Previous analyses of microprocessor knees (MPKs) often treated them as a single category.
• Limited comparative data exists across different MPK models.
• This study addresses the need for comparative outcomes between common MPK models.

Purpose of the Study:

• To compare clinical outcomes across four distinct MPK models.
• To evaluate functional mobility, quality of life, and patient satisfaction.
• To assess the incidence of injurious falls among users of different MPK types.

Main Methods:

• Retrospective analysis of clinical outcomes from 602 individuals.
• Comparison of functional mobility, quality of life, satisfaction, and injurious falls.
• Inclusion of C-Leg, Orion, Plié, and Rheo MPK models.

Main Results:

• No significant differences in functional mobility or satisfaction were found between the four MPK models.
• Quality of life differences were observed between C-Leg and Plié models (p=0.010).
• C-Leg and Orion MPKs significantly reduced injurious falls compared to non-microprocessor knees (p<0.001 and p=0.037, respectively).

Conclusions:

• Four common MPK models demonstrate comparable functional mobility and user satisfaction.
• Quality of life and satisfaction did not decline with advanced aging across MPK users.
• MPKs, particularly C-Leg and Orion, show a significant advantage in reducing injurious falls compared to non-microprocessor knees.