TABLE OF CONTENTS Table of Contents Indications & Contraindications Technique at a Glance Femoral Canal Preparation Implant Trialing Implant Insertion Implant Removal Implant Sizing Instrument List Note: Please refer to the Product Insert (Instructions for Use) for important information pertaining to the product description and handling, indications for use, warnings and precautions, possible adverse effects, and contraindications.
INDICATIONS & CONTRAINDICATIONS Indications for Use: The OMNI ARC™ Hip Stem is intended for use as the femoral component of a primary or revision total hip replacement when used with the OMNI Interface™ Acetabular System. The OMNI Interface Acetabular System articulates with the OMNI Modular Femoral Head (Cobalt Chromium or Ceramic). The femoral hip stem is intended for uncemented fixation and single use implantation.
FEMORAL CANAL PREPARATION Femoral Neck Resection The neck resection for the ARC stem is typically conservative. The recommended location of the osteotomy is in Zone B as described in Figure 1. This will provide the most options for restoring the proper leg length and offset. Zone A : 0-5mm Sub Capital Zone B : 5-10mm Sub Capital Zone C : >10mm Sub Capital...
Page 6
FEMORAL CANAL PREPARATION Opening Femoral Canal Open the femoral canal using the Starter Awl. Note the direction of the tip of the Starter Awl relative to the handle. (Fig. 3) Apply light pressure on the handle laterally (towards the greater trochanter) as the Awl is advanced to help guide the tip on a curved path along the calcar.
IMPLANT TRIALING Initial Trialing with the Rasp Once the final Rasp has been seated, begin by attaching the Neutral Neck Trial (Fig 6). Attach the appropriate Head Trial to the Neutral Neck Trial and reduce the hip joint (Fig 7). Conduct a thorough range of motion anlysis to check for bony impingement.
IMPLANT INSERTION Stem Insertion Insert the selected ARC Stem into the femoral canal and push the implant into position as far as possible with hand pressure. Use the Monoblock Stem Inserter by placing the round tip of the impactor into the lateral stem impactor indent on the stem.
IMPLANT REMOVAL Attach the Monoblock Stem Extractor Adaptor to the end of the Slap Hammer. Slide the U-shaped stem extractor slot onto the implant neck below the neck trunnion and turn the locking thread until tight. (Fig. 10) Apply quick, short strikes with the Slap Hammer Weight to remove the Stem from the femur.
147 mm *Measured to neutral head/neck configuration. For other head/neck options, see OMNI ARC Head Centers for relative leg length. If the trial reduction is too tight, even when using a -3.5 mm offset Head Trial, additional bone should be resected from the femoral neck.
Page 11
OMNI ARC™ Head Centers Offset and leg length measurements are relative to a neutral neck, neutral head combination Neck Neck Head Offset* Length Length -3.5 -2.7 -2.2 20.5 LEG LENGTH OFFSET 24.0 Neutral +3.5 27.5 31.0 -3.5 -1.0 -4.6 20.5 130.00°...
Page 14
North America: Tel 800-448-OMNI (6664) • Fax 508-822-6030 International: Tel +1 508-824-2444 • Fax +1 508-822-6030 Reorder No. HL-014 Rev 09/18 Copyright 2018. OMNIlife science, Inc. All rights reserved. Patents Pending. OMNI, OMNIHIP, and OMNI ARC are trademarks of OMNIlife science, Inc.
Need help?
Do you have a question about the HIP SYSTEM and is the answer not in the manual?
Questions and answers