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Results.Dislocation: no.Clinical outcome:Twelve of our patients (75%) have already good or excellent results with no pain in rest, no ormild pain with activity and good restoration of function. One patient feels some pain in deepflexion during work as a carpenter. In only one patient there is still a flexion of less than 100°.Small extension deficits are seen in 4 patients.Radiographic outcome:The full-leg radiographs showed a valgus axis of 1,2° (-1° to 7°) compared to preoperative 5,8°(0° to 14°). The assessment of the proximal tibial varus angle resulted in an angle of 3,8° (1 to7°). The measurements on deep flexion radiographs are not yet available.Discussion and Conclusion.Until now we had no dislocation of the bearing in our series, but further follow-up is needed.The preliminary clinical results are already promising and display no early complicationsneeding further operations. By anatomical placement of the femoral component the height of thelateral joint line seems to be respected, confirmed by a nearly correct proximal tibial varus anglein all cases. An increased proximal tibial varus angle can also be avoided by minimizingdamage to the lateral soft tissues during surgery and so not over-tighten the knee. Therefore thepopliteus tendon should stay intact. The elevated posterior translation, as seen in the recentkinematic studies of the lateral Oxford UKP can perhaps also be reduced by respecting thosesoft tissues.Saturday, October 9, 2010, 9:00-9:30Session B17: Novel techniques in ArthroplastyParva :A Novel Short Hip Stem*Marco Schiraldi - Ospedale Santi Antonio E Biagio - Alessandria, ItalyCarlo Dottino - Adler Ortho - Bologna, Italy*Email: marco.schiraldi@libero.itPurpose of our study is to present the design rationale and the early clinical results for theParva Stem, an innovative short hip stem. The Parva implant has been designed in order toaddress the bone sparing concept of a short stem able to achieve a good cervical andinterthrocanteric primary fixation associated with a the reliable primary fixation the isthmuslevel.file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]