Surgical tools

Custom knee instrumentation

Spacers for resection and alignment instruments.

JUKS

Spring spacers developed for the femoral anterior/posterior resection block in Smith+Nephew’s JOURNEY II UK instrumentation.

The pair is marked 1 mm and 2 mm. Long slots form the spring arms within each piece.

Manufactured pair

Complete manufactured JUKS pair, with rectangular bases and engraved thickness markings
Current JUKS CAD pair, showing the long spring slots and rectangular bases
Side view of both manufactured JUKS pieces, with their spring profiles and thickness differences
Early round-base JUKS on the left beside the current rectangular-base version on the right

First iteration

Early round base at left; current rectangular body at right.

PKAS–PVAG

A spacer for the contact face of Zimmer Biomet’s Persona valgus alignment guide.

Its central opening and side cut-outs follow the original guide. The photograph shows the fit with the intramedullary rod in place.

PLA prototype; metal version not produced

Green PLA PVAG prototype mounted on reference instrumentation
Complete PVAG CAD geometry, with its central opening and side features

PKAS–PARS

Two small spacers designed around the posterior contact feet of Zimmer Biomet’s Persona anterior referencing sizer.

The sizer provides the reference for femoral sizing and rotation. These parts add their own contact surfaces to its feet.

CAD design; not yet manufactured