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Arthroplasty. There are two distinct types of distal femur: the normal one and the narrow one.In the narrow femur the problem of overhang can occur because for a given AP dimension(sizing of the implant) the corresponding ML dimension is too large. Many years ago thesefindings were already published in different articles. It is only in recent years that interest camefrom the industry. In our department a study project was initiated in January 2006. This led tothe development of the Stature Femoral component for the Advance Medial Pivot kneeprosthesis. The first one was implanted in June 2007 and since then it is used in 60% of ourfemale patients and 11% in our male patients. The reason why it is quite often used in malepatients is because not only gender influences distal femoral geometry but also morphotype isan important factor. Therefore irrespective of gender, ectomorphs will have smaller ML ratiosand thus will have smaller knees and will benefit from a Stature variant. Moreover we haveseen that the correct use of the Stature variant can also influence our clinical scores and ourpercentages of ligament releases with overall better results.Thursday, October 7, 2010, 15:10-15:50Session B7: Robotic Knee SurgeryEarly Outcomes of Robotically Guided Bicompartmental ArthroplastyJohn Velyvis - Eisenhower Medical Center - Rancho Mirage, USAThomas Coon - St Elizabeth Community Hospitial - Red Bluff, USAMartin Roche - Holy Cross Hospital - Ft Lauderdale, USAStefan Kreuzer - Memorial Bone and Joint Research Foundation - Houston, USASharon Horowitz - MAKO Surgical Corp. - Fort Lauderdale, USAMiranda Jamieson - MAKO Surgical Corp - Ft Lauderdale, USA*Michael Conditt - MAKO Surgical Corp. - Boerne, USAIntroduction:*Email: mconditt@makosurgical.comBicompartmental osteoarthritis involving the medial tibiofemoral and the patellofemoralcompartments is often treated with total knee replacement. Improved implants and surgicaltechniques have led to renewed interest in bicompartmental arthroplasty. This study evaluatesthe radiographic and early clinical results of bicompartmental arthroplasty with separateunlinked components implanted with the assistance of a robotic surgical arm. In addition, weexamine the amount of bone resected using unlinked bicompartmental components compared tototal knee replacement. Finally, a retrospective review of total knee cases examines theapplicability of this early intervention procedure.Methods:97 patients received simultaneous but geometrically separate medial tibiofemoral andpatellofemoral arthroplasties with implants specifically designed to take advantage of a newbone and tissue sparing implantation technique using haptic robotics. These patients came fromfour surgeons at four different hospitals. The average follow-up was 9 months. Pre- and postoperativeradiographs were taken. ROM, KSS and WOMAC scores were recorded. The patientshad an average age of 67 yrs (range: 45-95), BMI of 29 ± 4kg/m 2 . 47% of the patients werefile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]