From Which Medical Device
The Symbios hip system is a cementless, HA coated, Swiss manufactured hip system which comes in proximally coated, fully coated, modular and monoblock varieties. The stem is titanium and is either anatomic (the SPS) or straight stem (the Harmony).
The system is marketed with preoperative planning software that uses CT data to model the proximal femur for templating and has been associated in one study with highly accurate positioning of the hip and restoration of hip anatomy, including leg length (Sarali et al, 2009).
Results for the custom stem in patients under 50 showed a 93% stem survival at 15 years (Flecher et al, 2010).
The SPS stem has an ODEP 7B rating in 2010.
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References:
Sarali E, Mouttet A, PAsquier G, Durante E, Catone Y. Accuracy of reconstruction of the hip using computerised three-dimensional pre-operative planning and a cementless modular neck. Journal of Bone and Joint Surgery (Br). 2009; 91-B: 333-40. www.ncbi.nlm.nih.gov/pubmed/19258608
Flecher X, Pearce O, Parratte S, Aubaniac J, Argenson J. Custom Cementless Stem Improves Hip Function in Young Patients at 15-year Follow up. Clin Orthop Relat Res. 2010 Mar; 468(3): 747-55. www.ncbi.nlm.nih.gov/pubmed/19690930
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