Tri-Por®

Tri-Por®

Adler Ortho® employs the Powder Manufacturing Technology to work with the three metal alloys more commonly used in Oerthopaedics: Titanium Alloy, Cobalt-Chrome alloy, and Stainless Steel. The Tri-Por® logo identifies all the implants made by Adler Ortho® employing this innovative technology.

Adler Ortho® also produces disposable prototypes, trial implants, cutting guides and instruments made of Nylon. Those devices are produced directly from plastic powders employing a technology similar to the one used for metal prosthesis.

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Titanium alloy

The Ti-Por® 3D monolithic ingrowth surface repèresents one of the main achievements of Adler Ortho® research in the Powder Manufacturing field.

The Ti-Por® is extremely rough, and therefore it can supply implants with a much higher primary stability Vs the one provided by standard technologies. Therefore the Ti-Por® surface, being built in one piece together with the implant has a resistance to delamination that cannot be matched by any porous coating or plasma spray normally employed for cementless orthopaedic implants.

CoCrMo alloy

This alloy, because of its hardness and wear resistance, it is commonly used to manufacture mobile articular surfaces, especially, but not only, for knee implants applications.

Adler Ortho® employs the Powder Manufacturing Technology also to produce CoCrMo alloy made implants. Those implants feature the Co-Por®, 3D monolithic ingrowth surface, similar to Ti-Por®.

Stainless Steel

Adler Ortho® employs Powder Manufacturing Technology to produce some surgical instruments, for instance knee cutting blocks.

Clinical Results

The Fixa Ti-Por® acetabular cup had been successfully launched in 2007, while the Parva stem, the 1st hip stem ever produced directly out of metal powders, had been in clinical use since 2009.

Available clinical data look very encouraging:

The Fixa Ti-Por® cup showed an overall survival rate of 98.7% at 8.5 years (Data collected on a cohort of 9,684 patients). The cup showed a higher overall survival rate when compared with all the other press-fit cementless cups included in the RIPO registry in the same time period. Failures due to aseptic loosening were particularly low (0.1%) Vs the control group (0.3%) (1)

The Fixa Ti-Por® cup received a 7A* rating from the British Orthopaedic Devices Evaluation Panel (ODEP www.odep.org.uk). It’s a rating certifying implants reliability according to available and verifiable clinical data with very strict specifications. The 7A* rating is the highest one achievable for implants that reached 7 years follow-up.

The Parva stem showed a survival rate of 99.3% at 5 years on a cohort of 152 consecutive implants (146 patients) with an average follow-up of 56 months (Min. 42 months; Max. 73 months). The only revision reported was due to periprosthetic fracture. Survival rate for aseptic loosening was 100% at 5 years. (2)

(1)Castagnini F. and others. . Highly porous titanium cup in cementless total hip arthroplasty: registry results at eight years. Int Orthop. 2019 Aug;43(8):1815-1821. doi: 10.1007/s00264-018-4102-9. Epub 2018 Aug 23.
(2)Schiraldi M., Bondi M., Renzi Brivio L. Femoral neck preservation with a short hip stem produced with powder manufacturing: mid-term results of a consecutive case series. Eur J Orthop Surg Traumatol. 2019 May;29(4):801-806. doi: 10.1007/s00590-019-02381-y. Epub 2019 Jan 28.

 

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