Accolade II is a tapered wedge stem that has been designed to fit more patients while accommodating a variety of surgical approaches.1,2* It is the first Morphometric Wedge design. This is characterized by a size specific medial curvature that fits a broad range of bone sizes and shapes found in today’s patient population.1,2* The demand for tapered wedge hip systems has increased substantially year after year3 and the average age of the total hip replacement recipient has been declining.4,10 Accolade II was designed to address this changing patient population through a proprietary technology called SOMA.1,2
Stryker Orthopaedics Modeling and Analytics system, or SOMA, is a proprietary population-based design environment that is changing the way implants are designed. SOMA features a large database of bone morphology – size, shape, density, and inner and outer cortical boundaries – drawn from diverse populations. It has powerful functionality with which to design, model, and analyze novel orthopedic devices. SOMA was fundamental in the development of the Accolade II Femoral Hip System.
- Morphometric Wedge – the stem is uniquely designed with a size specific medial curvature to fit a broad range of bones sizes and shapes found in today’s patient population.1,2* Mechanical testing has shown this design facilitates initial press-fit stability5 and load transmission in the proximal region of the femur.
- Accolade II features optimized stem length5, 6 and a distal lateral relief. These features are designed to reduce the insertion path of the stem when using the direct anterior approach for implanting.
- SOMA Designed – Stryker’s new proprietary technology, SOMA, was fundamental in the design and development of the Accolade II Femoral Hip System. Using 556 patient CT scans, Accolade II was designed to fit a broad range of patients.1,2
- Accolade II is an evolution of the successful Accolade Hip System. Over the last 10 years, the Accolade Hip System has been implanted in over 500,000 patients worldwide7 and has demonstrated clinical history.8
- PureFix HA Coating – Accolade II features Stryker’s PureFix HA coating applied proximally which has more than 15 years of clinical results9 in a different stem.
- Accolade II has 12 available body sizes, each with two offset options (132° and 127°) to accommodate a broad range of patients.
- Accolade II features a streamlined, 2 tray, broach-only instrument system. The instrument system is designed to promote O.R. efficiency for both surgeon and staff and to reduce the number of instruments that must go through sterilization after every surgery.
- The simple broach only instrument system accommodates all surgical approaches.
1. Wuestemann T, Bastian A, Parvizi J, Nessler J, Kolisek F. A novel tapered hip stem design optimized for femoral fit in a wide array of bone types. 2011 EFFORT
2. Wuestemann T, Bastian A, Schmidt W, Cedermark C, Parvizi J, Rothman R. A novel technique for studying proximal femoral bone morphology for hip implant design. 2010 ORS Poster# 2217
*fit based on 556 CT scans
3. Stryker Sales Data on File
4. Kurtz S, Lau E, Ong K, Zhao K, Kelly MP, Bozic KJ. Future Young Patient Demand for Primary and Revision Joint Replacement. CORR 2009; 467:2606-2612
5. Race A, Wuestemann, T, Collopy D. Comparison of the immediate post-operative
stability of a novel tapered hip stem to a predicate design. 2012 ORS Poster #1051
6. Lovell T, Hozack W, Kreuzer S, Merritt P, Nogler M, Puri L, Wuestemann T, Bastian A, Influence of Stem Length on the Insertion Path in THR. 2009 ORS Poster #2040
7. Stryker Internal Memo- Accolade TMZF Sales Data; August 2013.
8. David S. Casper, BS, Gregory K. Kim, MD, Camilo Restrepo, MD,
Javad Parvizi, MD, FRCS, and Richard H. Rothman, MD, PhD Primary Total Hip Arthroplasty With an Uncemented Femoral Component Five- to Nine-Year Results Journal of Arthroplasty Vol. 26 No. 6 2011.
9. Capello et al. Hydroxyapatite-coated Femoral Components – 15 Year Follow-up. CORR No. 45, 2006.
10. U.S. Department of Health and Human Services. Health, United States. 2010.