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NANOS

Neck Preserving Hip Stem

Overview

Neck Preserving Hip Stem

NANOS◊ provides a clinically proven1-13 neck preserving short stem solution based on the true anatomy of the proximal femur. Since its introduction in 2004, NANOS was implanted over 55’000 times.

Material and Surface

The implant is made of a proximal osteoconductive coated titanium forged-alloy (ISO 5832-3). The surface roughness of the porous titanium plasma coating does on one hand increase the surface area and on the other ensures primary stability2.The additional calcium phosphate BONIT® coating is restorable and accelerates the osseointegration process14-15.

Bone preserving 

Compared to standard procedures NANOS preserves bone stock, especially on the femoral neck as well as around the metaphysis and the greater trochanter16.

 

References:
1.         Capone A, Bienati F, Torchia S, Podda D, Marongiu G. Short stem total hip arthroplasty for osteonecrosis of the femoral head in patients 60 years or younger: a 3- to 10-year follow up study. BMC Musculoskeletal Disorders. 2017; 18:301.
2.         Stadler N, Lehner J, Trieb, K. Prospective mid-term results of a consecutive series of a short stem. Acta Orthopædica Belgica. 2016; 82: 372-375.
3.         Amenabar T, Marimuthu K, Hawdon G, Gildone A, McMahon S. Total hip arthroplasty using a short-stem prosthesis: restoration of hip anatomy. J Orthop Surg (Hong Kong). 2015;23(1):90-4.
4.         Ettinger M ,Ettinger P, Ezechieli M, Büermann S , Budde S, Calließ T, Petri M, Thorey F. CCD and offset after Nanos short stem in total hip arthroplasty. Technol Health Care. 2013; 21(2):149)155.
5.         Logroscino G, Magliocchetti G, Ciriello V, Santagada DA, Fabbriciani, C. The new stemless hip implants: our experiences with the ultra short stem. Journal of Orthopaedics and Traumatology. 2011;1: 125–164.
6.         Ettinger M, Ettinger P, Lerch M, Radtke K, Budde S, Ezechieli M, Becher C, Thorey F. The NANOS short stem in total hip arthroplasty: a mid-term follow-up. Hip Int. 2011; 21 ( 05 ): 583 – 586.  
7.         Reinhardt A. Keep it short and simple – Ergebnisse einer Multicenter-Studie. Orthopädie im Profil. 2007;1: 6-8.
8.         Brinkmann V, Radetzki F, Delank KS, Wohlrab D, Zeh A. A prospective randomized radiographic and dual energy X-ray absorptiometric study of migration and bone remodeling after implantation of two modern short stemmed femoral prostheses. J Orthop Traumatol. 2015; DOI 10.1007/s10195-015-0335-1.
9.         Kaipel M , Grabowiecki P, Sinz K, Farr S, Sinz, G. Migration characteristics and early clinical results of the NANOS short)stem hip arthroplasty. Wien Klin Wochenschr. 2015; DOI 10.1007/s00508-015-0756-0.
10.      Budde S, Seehaus F, Schwarze M, Hurschler C, Floerkemeier T, Windhagen H, Noll Y, Ettinger M, Thorey F. Analysis of migration of the Nanos® short-stem hip implant within two years after surgery. International Orthopaedics (SICOT). 2015; DOI 10.1007/s00264-015-2999-9.
11.      Zeh A, Pankow F, Röllinhoff M, Delank S, Wohlrab D. A prospective dual-energy X-ray absorptiometry study of bone remodeling after implantation of the Nanos® short-stemmed prosthesis. Acta Orthopædica Belgica. 2013; 79: 174-180.  
12.      Götze C, Ehrenbrink J, Ehrenbrink H. Is there a bone preserving bone remodelling in short stem prosthesis? DEXA analysis with the Nanos total hip arthroplasty. Z Orthop Unfall. 2010;148:398-405.  
13.      Moussa K. Minimal invasive (MIS) posterior approach in short stem total hip arthroplasty - Short term resuts. J Bone Joint Surg Br. 2012;94-B (XXV):156.  
14.      Szmuckler-Moncler S., Ahossi V., Pointaire P. Evaluation of BONIT, a fully resorbable CaP coating obtained by electrochemical deposition, after 6 weeks of healing: A pilot study in the pig maxilla. Key Engineering Materials. 2001; 192–195: 395–398.  
15.      Zeggel P. A summarizing characterization of BONIT-FBR. Implants. 2000; International Magazine of Oral Implantology. 1; 52–57.
16.      Mai S, Pfeil J, Siebert W, Kutzner KP. Kalkar-geführte Kurzschäfte in der Hüfendoprothetik – eine Übersicht. Deutscher Ärzteverlag OUP. 2016; 5 (6): 342-347. 

This information is intended for health care professionals only.

*The decision to use Smith+Nephew products should be made by a healthcare professional, in line with applicable local protocols.  Smith+Nephew products should always be used for the indications set out in the applicable instructions for use.