MPR TKA Ball Joint Alvarado System (Improved Design)

NEW Ball Joint Style TKA System for Total Knee Procedures!


Knee Holder/Positioner with innovative Ball Joint Block and Ball Joint Boot that can tilt, rotate, flex, or extend the knee into infinite positions.

The improved design has a one-piece smaller plate with narrower sliding rail. The smaller block clamps are tighter around the boot for a better fit.

New MIKP Three


NewMIKPBundle 6192020

All corners of the block rail are rounded to aid in the install and removal of the sliding block.


MPR MIKP PL30 2 CUALT1 small


Catalog #      






Complete MPR TKA Ball Joint Alvarado

System, includes following components:

MPR-MIKP-PL-2 Base Plate - 24"
Base Plate - 30" (Optional)
MPR-BMP Base Plate Locking Clamp
MPR-MIKP-BJB-2 MIKP Ball Joint Block
MPR-BJBT Universal Ball Joint Block Boot



Retrofit your existing system



Universal Ball Joint Boot also available separately to retrofit your existing knee positioner.  The boot is compatible with similar systems from other manufacturers (including the IMP® DeMayo Positioner). Upgrades/replacements for Blocks, Base Plates, Locking Clamps, and Stabilizing Plates also available. Contact us for specific details.



MPR Blade Socket (MPR-BC) or MPR All-In-One Socket required (MPR-CS-AIO, shown alone below left, and with TKA/Locking Clamp below right).

MPR AIO CSRailCU     MIKPNewPlateBlockAlt6 15 20

MPR Universal Ball Joint Boot shown below on IMP® DeMayo Positioner.




CLICK HERE for complete system details


CLICK HERE for Instructions for Use and Cleaning


CLICK HERE for Instructional Video



Made in USA. Trials available.



A stable, time-proven orthopaedic product.



IMP is a registered trademark of Innovative Medical Products, Inc. ("Innovative Medical Products"). Medical Products Resource and this website are not affiliated with, endorsed by, or sponsored by Innovative Medical Products.

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Additional Info

  • Unit of Measurement: Each
  • Catalog Number: MPR-MIKP-BJ-2