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Surgical Technique
The PIR includes proprietary implants in various shapes and sizes, each utilizing the same instrumentation and technique, and complementary instrument trays, offering treatment solutions for a broad range of defects.

The PIR Medial Femoral Condyle (PIR-MFC) implants are designed to treat articular cartilage defects (1 – 5 cm2) of the anterior or central medial femoral condyle. The PIR-MFC consists of 11 implants and treats over 95% of expected defect sizes. It is implanted using a simple surgical technique in four (symmetric implant) or eight steps (oval implant).

The PIR Patellofemoral Groove (PIR-PFG) implants are designed to treat articular cartilage defects of the patellofemoral groove. The system includes 10 implants with either a 20mm or 25mm cap diameter, a 1mm or 3mm offset, and a trochlear groove angle of 125°, 135°, or 145° and contains an optional polyethylene patellar component. The system is implanted using a simple 5-step surgical technique.
 

PIR-MFC Symmetric Implant

SizeCatalog No.
10100-IMP-1000
12.5100-IMP-1250
15100-IMP-1500
17.5100-IMP-1750
20100-IMP-2000

 
 





PIR-MFC Oval Implant

SizeCatalog No.
15×20150-IMP-1520
15×25150-IMP-1525
17×22150-IMP-1722
17×27150-IMP-1727
20×25150-IMP-2025
20×30150-IMP-2030

 
 









PIR-PFG Implant

SizeCatalog No.
20.125.1300-IMP-20.125.1
20.125.3300-IMP-20.125.3
20.135.1300-IMP-20.135.1
20.135.3300-IMP-20.135.3
20.145.1300-IMP-20.145.1
20.145.3300-IMP-20.145.3
25.135.1300-IMP-25.135.1
25.135.3300-IMP-25.135.3
25.145.1300-IMP-25.145.1
25.145.3300-IMP-25.145.3

 
 






LATEST | News
PIR Knee System Receives FDA Approval to Initiate Clinical Study
Moirai Orthopaedics, LLC, is pleased to announce it has received approval from the U.S. Food and Drug Administration (FDA) for its Investigational Device Exemption (IDE) application to initiate clinical study of the company’s multi-patented Pyrocarbon Implant Replacement (PIR) System. The PIR System was developed in conjunction with the Fellowship of Orthopaedic Researchers.

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The Pyrocarbon Implant Replacement (PIR) System