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one month later to a mean value of 19 cc and 3 cc. Hemoglobin rate mainly reduced of 1,7 g/dLbetween pre and postoperative time. At one month all patients improved their quality of lifesignificantly but one had a gluteal pain. No patient had perioperative infections or pelvicvisceral injuries or required blood transfusions. This study seems to assess that AxiaLIFprocedure is a minimally invasive lower spine techique actually. The presacral hematomapresence seems to have no side effect and it may be prevented by perioperative drainage. Morelarge studies are needed to confirm our results.Saturday, October 9, 2010, 11:15-11:50Session B19: Hip MechanicsMulticenter Longitudinal Densitometric Clinical Study on PeriprostheticOsteointegration and Bone Remodelling of Trabecular Titanium*Leo Massari - University of Ferrara - Ferrara, ItalyAlessandro Bistolfi - - Torino,Pier Paolo Grillo - - Torino,Araldo Causero - University of Udine - Udine, ItalySilvia Burelli - Lima Corporate - Udine, ItalyGaetano Gigliofiorito - University of Ferrara - Ferrara, ItalyPiera Menosso - University of Udine - Udine, ItalyGiulia Carli - Lima Corporate - Udine, ItalyHans Rudolf Bloch - Lima Corporate - Lugano, Switzerland*Email: msl@unife.itINTRODUCTION: Trabecular Titanium TM is an innovative material characterised by an highopen porosity and composed by multi-planar regular hexagonal cells. It is not a traditionalcoating and its tri-dimensional structure has been studied to optimise osteointegration.Furthermore, it has excellent mechanical properties, as a very high tensile and fatigue resistanceand an elastic module very similar to the that of the trabecular bone. The aim of this study is toevaluate the osteointegration and bone remodelling measuring the longitudinal pattern ofchange in BMD around a cementless acetabular cup made from Trabecular Titanium TM (DeltaTT cup, Lima Corporate, Italy) in primary total hip arthroplasty (THA).METHODS: Dual-energy x-ray absorptiometry (DEXA) analysis, radiographic evaluation onstandard AP and lateral views and clinical evaluation with Harris Hip Score (HHS) and SF-36were performed at 1 week, 3, 6, 12 months after surgery.RESULTS: Between February 2009 and June 2010, 72 patients underwent primary THA withDelta TT cup at 4 centres. There were 36 (50%) female and 36 (50%) male with an average ageof 63 (range 39-75).Preliminary results include 72 patients with 56 at 3 months, 42 at 6 months and 28 at 12months. The mean HHS improved from 48 points (range 14-79) preoperatively to 88 (range 74-100) at 3 months, to 94 (range 71-100) at 6 months and to 97 (range 94-100) at 12 months. SF-36 reported a progressive improvement of all domains.file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]