Abstract
The failure rate of peritrochanteric fracture implants ranges from 5 to 20 % The aim of the present preliminary study is to evaluate the relationship between Singh index (SI), and failure of internal fixation (cut-out), examining bone mechanical properties from ex-vivo human femoral heads.
The failure rate of peritrochanteric fracture implants ranges from 5 to 20 % The aim of the present preliminary study is to evaluate the relationship between Singh index (SI), and failure of internal fixation (cut-out), examining bone mechanical properties from ex-vivo human femoral heads.
From a methodological point of view we decided to use SI on the basis of previous literature,, our data seems not to be influenced by the use of this methodological approach. > Three load speeds were set: 3, 10, 500 mm/min resulting values of BW/s were compared with Davy and Bergmann ones (obtained with instrumented prosthesis), and test validity was confirmed. In conclusion our data demonstrated that: cut out phenomenon occurs for lower mechanical load in femoral heads of patients with lower SI.
Correspondence should be addressed to Richard Komistek, PhD, International Society for Technology in Arthroplasty, PO Box 6564, Auburn, CA 95604, USA. E-mail: ista@pacbell.net
