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OBJECTIVE. Develop a technique to restore the articular surface with bone graft impactedthrough surgical hip dislocation approach in patients with AVN of the femoral head Ficat 4 toprevent early articular degeneration.MATERIAL AND METHODS. We performed a prospective study in 5 patients with AVN offemoral head Ficat 4, 32 years old average (24-39). We treated all of them with a reshape ofthe femoral head with bone graft through surgical hip dislocation approach, all got a completespherical head after the procedure. They were follwed up with radiographs , CT and Harris HipScore (HHS) at 3, 6, 12 months and then annually.RESULTS. We obtained a complete spherical head in all cases, and restitution of the articularsurface after surgery. HHS initially showed an improvement during the first six months (20points average) Nevertheless patients began with progressive deterioration either insymptomatology and imaging. At 24 months after surgery (18-36) all patients had returned topreoperative HHS, radiographs and CT showed a complete collapse in the bone grafted zone.All patients needed a total hip replacement at that moment. There were no other associatedcomplications.CONCLUSIONS. The bone graft for the treatment of AVN of the femoral head Ficat 4, hasno impact on the natural history of the disease. Patients had no clinical nor imagingimprovement at short term follow up. We must look for another therapeutic alternative foryoung patients to preserve hip joint.Poster: 8Worse Clinical Prognosis Factors in the Surgical Treatment ofFemoroacetabular Impingement*Dante Parodi - Clinica Alemana De Santiago - Santiago, ChileJavier Besomi - Clinica Alemana De Santiago / Facultad De Medicina Clinica Alemana -Universidad Del Desarrollo - Santiago, ChileLuis Moya - Clinica Alemana de Santiago - Santiago, ChileClaudio Mella - Clinica Alemana de Santiago - Santiago, ChileJoaquin Lara - Clinica Alemana de Santiago - Santiago, Chile*Email: danteparodi@gmail.comWe identify clinical, radiological and surgical factors that are associated with poorer clinicaloutcomes in the surgical treatment of femoroacetabular impingementWith the aim of establish bad prognosis’ factors in clinical outcomes in the treatment offemoroacetabular impingement (FAI), we performed a retrospective study in 50 hips with FAItreated through surgical hip dislocation. We evaluated clinical, radiological and surgicalfeatures. Clinical outcomes were determined classifying according to symptomatology in:“asymptomatic”, “better” and “without changes or worse” with respect to their preoperativecondition. Statistical analysis was performed with SPSS v15.0.file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]