MIHR International

Downloadable Information
MIHR
Amoda
Mitre
Enta
MIS Retractor

Minimal Invasive Hip Resurfacing

Introduction

The Comis MIHR International advanced hip resurfacing system is the first created to facilitate small incision surgery. Although hip resurfacing is a bone sparing operation, it is a maximally soft tissue damaging operation at the best of times.

The MIHR began as an instrumentation system designed for surgeons who use small incision techniques. The implant was then designed around the instrumentation, all the while ensuring that implant design principles with over 15 year’s heritage were preserved

Implant Overview

Acetabular Component

Using an ultra-rough Accentus HA coating, coupled with a 1mm under-ream, the design of the acetabular component provides excellent initial press-fit fixation. The equatorial ridges on the cup backing prevent cup pull-out, whilst the lateral ridges increase torque to prevent spin-out.

Femoral Component

The resurfacing head was designed to include cement extrusion ridges on the inside profile. This feature reduces the likelihood of tolerance change during the sometimes aggressive femoral head implantation phase of the procedure.

Modular Component

Used alongside 3 sleeves to reduce neck itinerary, the Comis modular system is designed to be used alongside the Comis Leg Length Gauge to reduce leg length discrepancy inter-operatively.

The MIHR International comes in 13 sizes (36-60) to accomodate a wide range of patient anatomy.

Instrument Philosophy

Recent studies have shown that a Hip Resurfacing implant is only as successful as the accuracy with which it is implanted.

In order to prevent acetabular and femoral positioning issues, Comis Orthopaedics developed a set of instrumentation and electronic devices to give the patient and surgeon peace of mind.

Surgical devices to improve surgeon accuracy include:

Materials

The Comis MIHR International is manufactured from as cast high carbon cobalt chrome, to ensure superior wear resistance in comparison to other alloys used in resurfacing.

The low wear, high activity bearing of the MIHR is well suited for younger patients. Using metallurgy principles dating back to the birth of hip resurfacing, the Comis MIHR is a prime example of an advanced implant designed for today’s patients.