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Thursday, October 7, 2010, 14:50-15:30Session A6: Hip MiscellaneousShort Term Results of Primary THA Using RevelationV2: A Lateral FlareFemoral Component*Satona Murakami - Nagoya City University - Nagoya City, JapanNobuyuki Watanabe - Nagoya City University - Nagoya city, JapanHirotaka Iguchi - Nagoya City University - Nagoya, JapanShinichi Hasegawa - Department of Orthopedic Surgery,Nagoya city university - Nagoya, JapanKaneaki Tawada - Department of Arthroplastic Medicine, Nagoya City University - Nagoya,JapanMasahito Yoshida - Nagoya city university - Nagoya, JapanNobuhiko Tanaka - Nagoya City University - Nagoya, JapanTakanobu Otsuka - Nagoya city university - Nagoya, Japan*Email: satona@med.nagoya-cu.ac.jpDislocation after total hip arthroplasty (THA) is one of the most serious complications. Werecently modified the design of Lateral Flare femoral component (RevelationV2) with sixdegrees lower anteversion to reproduce the normal hip condition in Japanese. In addition, weadded 10-degree slope on the posterior neck to prevent dislocation especially aimed to highanteversion cases. The purpose of this study is to verify the clinical outcome after this designmodification.Hospital records and database were retrospectively reviewed. We investigated 46 consecutivehips in 43 patients who underwent primary total hip arthroplasty using RevelationV2 fromSeptember 2007 to August 2009. All patients implicated preoperative planning using CAT scanwith their informed consents.The mean age and BMI at surgery were 63 years old and 23.1. Preoperative diagnosis wasosteoarthritis (40/46: 87%), rheumatoid arthritis (2/46: 4%) or avascular necrosis of femoralhead (4/46: 9%). There were 41 hips (89.2%) of Crowe I, 3(6.5%) of Crowe II and 2(4.3%) ofCrowe III. Preoperative femoral neck anteversion averaged 28 degrees, whereas postoperativecombined anteversion (the sum of femoral neck anteversion and anterior cup inclination)averaged 46 degrees. During follow up, 5 complications, in details, 3 mild peroneal nerve palsy,1 pulmonary embolism and 1 dislocation following deep infection were reported. In conclusion,although no ordinal dislocation was found in this series, longer observation will need to judgeappropriateness of this new component.Thursday, October 7, 2010, 15:40-16:00Session A7: Hip 2Improving Cup Positioning Using a Mechanical Navigation InstrumentSimon Steppacher - ctr for computer assisted and recons surg - bern, switzerlandJens H Kowal - ctr for computer assisted and reconst surg - boston, usafile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]