Zimmer | Patient Specific Instrumentation | Which Medical Device

Description

From Which Medical Device

The Patient-Specific Instrumentation system from Zimmer is a custom-jig system for total knee replacement. The system is compatible with the NexGen Complete Knee Solutions and the Gender Solutions Natural Knee Flex systems.

Preoperative planning is performed using MRI data. The jigs are designed for pin placement and standard jigs are used over these pins to guide the saw blade. The distal femoral jig has four pin holes, two on the anterior femur and two distally. Having placed the anterior pins, the distal femoral cut is performed using the standard distal femoral cutting guide, rather than having a slot in the block. The standard distal femoral cutting block is then inserted into the distal femoral cut surface and the remaining cuts performed as standard. The standard tibial cutting jig is placed over the tibial pins when they have been placed. As with all these systems, good exposure is required to ensure the jig is correctly seated, and care must be taken not to remove osteophytes which may be needed for jig placement before jig seating.