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IMHS CP™

Clinically Proven Intramedullary Hip Screw

Overview

Clinically proven, more options, fewer steps

The IMHS^◊ hip screw is the first and only intramedullary hip screw device that provides a barrel through which a lag screw can slide. Introduced in 1991, the IMHS^◊ provided a more minimally invasive technique than the traditional Compression Hip Screw. By featuring a Centering Sleeve to enhance Lag Screw sliding and medializing the implant to reduce the moment arm, this design improved implant biomechanics for the treatment of hip fractures. The IMHS^◊ CP hip screw retains the clinically proven features of the original design while adding new features to simplify the procedure and provide more options for the surgeon to treat the indication that presents.

Clinically Proven

Proven to reduce OR time and blood loss through a minimally invasive nailing technique and the 4° ML bend1 in the treatment of intertrochanteric versus side plates. Proven to increase stability and early weight bearing in unstable fractures from sliding compression and providing an intramedullary trochanteric buttress.^2,3

Features and Benefits

With new and improved instrumentation such as captured screws, the IMHS^◊ CP hip screw offers a more streamlined surgical technique. Available with Standard Lag Screw and Sleeve. The new Subtrochanteric Lag Screw provides more clinical options. The Set Screw is preloaded and cannulated to allow nail insertion over a ball tip guide rod, removing steps from the technique. Additional steps are removed by using the 3 in 1 Lag Screw Inserter that places the Lag Screw and Sleeve and compresses the Lag Screw all in one instrument. The IMHS^◊ CP hip screw has added a 125° neck angle providing more clinical options.

Other New Features

A more anatomical 2.0 meter radius of curvature has been added to all nails to reduce anterior cortex impingement. Short nails now have left and right components. The proximal end of the nail has been reduced by 5mm in length to avoid prominence at the greater trochanter. All nails can be dynamically or statically locked. AP and ML alignment guides to make placement easier and more precise, while reducing X-ray exposure.

References

1. Baumgaertner, et al; CORR; 348;87-94; March 1998
2. Hardy, et al; JBJS; 80A:5:618-630, May, 1998
3. Rebuzzi, et al; Injury; 33:407-412; 2002