DJO Global, Inc. says the company developed a revision hip which saves time and money in the OR. Now the company has FDA 510(k) clearance for its Exprt Revision Hip portfolio.
Cleared Exprt Revision Hip Claims Saves Time and Money
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Price Point Efficiency
Mark Russell, the company’s surgical division’s senior vice president, said in a March 15, 2017 press release, “One of the biggest challenges our healthcare system encounters is introducing modern technologies at increased price points. The latest addition to the Exprt portfolio signifies our deep commitment to not only clinical outcomes, but both surgical and cost efficiencies.”
The “efficiencies” are due to a two-tray revision system which represents an 80-90% reduction in instruments compared to competitive systems, claims the company. “Streamlined instrumentation translates into less money and time spent on sterilization, less overall time in the operating suite, and less storage space—appropriate for both hospital and ASC settings.”
Michael Taunton, M.D. at the Mayo Clinic and design team member of the Exprt Platform was one of the first surgeons to implant the device. “Having a thoughtful approach to introducing new technology in today’s healthcare landscape will drive shifts in the market place. We designed DJO Global’s Exprt Revision Hip and Knee Systems to challenge conventional approaches to revision arthroplasty. These systems allow me to do what I used to think wasn’t possible—treat my patients with a high-quality implant with improved surgical efficiency and reproducible outcomes while simultaneously being economically responsible.”
The Exprt Device
The company claims the revision hip maximizes the femoral canal conformity by incorporating:
- 3° taper geometry for axial stability
- Optimized splines providing 0.2mm of press-fit on each side of the conical region
- 3° bow on longest distal stem to accommodate the natural bow
- Total construct lengths from 195-295mm
- Anatomic anterior distal relief curved in multiple planes
Addressing the question of strength, the company said the Exprt consists of modular shot peened, distal femoral stems and proximal bodies secured with a taper junction and bolt. Successful fatigue load testing was carried out at 2,300N (517 lbs.) to 5 million cycles on worst case components. To further challenge the construct in this study, the potting depth was increased to 90mm below the center of the femoral head to create a larger moment arm and higher stresses.
The platform also comes with acetabular options and includes shells with proprietary P2 in-growth coating, HXe+ polyethylene and BIOLOX delta and CoCr femoral heads ranging from 22-44mm.
DJO Global’s products are marketed under a portfolio of brands including Aircast, Chattanooga, CMF, Compex, DonJoy, ProCare, DJO Surgical, Dr. Comfort and Exos.
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Discussion
This is a fascinating development. In my practice we've seen similar outcomes with the revised protocol. The key differentiator seems to be patient selection criteria. Has anyone else noticed the correlation with BMI thresholds?
Great point. I'd push back slightly on the conclusion, the sample size in the cited study is too small to draw population-level inferences. That said, the directional signal is compelling and worth a larger RCT.
We implemented a similar approach last year. Early results are promising but we're still gathering 12-month follow-up data. Happy to share our protocol if anyone is interested.
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