Smith+Nephew OR3O Dual Mobility System shows ‘promising’ results

Smith+Nephew OR3O Dual Mobility System shows ‘promising’ results

The newly launched OR3O Dual Mobility System for total hip arthroplasty from Smith+Nephew has received encouraging early results.

Utilising proprietary OXINIUM◊ DH Technology, the OR3O system offers the benefits of dual mobility—increased range of movement and “jump distance” (1)(*)—while also incorporating unique material advantages.

Dr Stephen Duncan at the University of Kentucky said: “The OR3O Dual Mobility System allows me to address multiple patient types, as I have implanted the system in the hypermobile primary all the way to complex revisions. Compared to other designs, the liner is easier to seat and lock inside the shell. The instruments and trials allow for a simple procedure. I could not be more satisfied with my clinical experience.”

While current systems offer modular, dual mobility options with cobalt chrome liners, the OR3O Dual Mobility System utilises Smith+Nephew’s latest advanced bearing surface, OXINIUM DH (Diffusion Hardened), for its liner, as well as an OXINIUM femoral head and highly cross-linked polyethylene (XLPE) insert. Hip implants made with OXINIUM Technology have shown reduced wear profiles and minimised corrosion when compared to hip implants made from cobalt chrome (2).

Dr Edwin Su at the Hospital for Special Surgery in New York City said: “I am excited about what the OR3O Dual Mobility System can offer my patients as part of the hip care continuum. The system is uniquely set apart by offering OXINIUM DH Technology in a dual-bearing construct, and so far early case outcomes have been great.”

Dual mobility solutions for the hip have been in clinical use for decades (3, 4), however, a modular design that allows for internal screw fixation in the shell was introduced in 2010. Since its introduction, this segment continues to grow and is used to treat indications across the total hip spectrum from primary total hips all the way to complex revisions.

“The successful introduction of the OR3O Dual Mobility System into this growing category is a significant win for Smith+Nephew,” said Skip Kiil, President of Orthopaedics at Smith+Nephew. “Introducing an OXINIUM DH liner option and offering OXINIUM with XLPE throughout the entire size range sets our portfolio apart from the competition.”

References

* The jumping distance is the degree of lateral translation of the femoral head center required before dislocation occurs

  1. Sariali E, Lazennec JY, Khiami F & Catonné Y. Mathematical evaluation of jumping distance in total hip arthroplasty, Acta Orthopaedica. 2009;80(3): 277-282. 
  2. Parikh A; Pawar V; Sprague J. Long-term Simulator Wear Performance of an Advanced Bearing Technology for THA. Poster Presented at ORS. 2013; Poster No:1028; Hampton C; Weitzler L; Baral E; Wright TM; Bostrom MPG. Do oxidized zirconium heads decrease tribocorrosion in total hip arthroplasty. Bone Joint J. 2019; 101-B: pp.386–389.
  3. Boyer, B; Philippot, R; Geringer J; Farizon F. Primary total hip arthroplasty with dual mobility socket to prevent dislocation: a 22-year follow-up of 240 hips. International Orthopaedics (SICOT), 36, 2012, 511-518.
  4. Reina, N; Pereek, A; Krych, AJ; Pagnano, MW; Berry, DJ; Abdel MP. Dual-Mobility Constructs in Primary and Revision Total Hip Arthroplasty: A Systematic Review of Comparative Studies. The Journal of Arthroplasty, 34, 2019, 594-603.
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