Acetabular cup impacting victimization patient-specific instrumentation-Herbert Andre Jansen , Di Li

A cup impactor assembly includes a shaft. A cup mechanical device is at a cup finish of the shaft and is releasably connecting a cup in mounted relation. A handle is at associate degree impacting finish of the shaft. a visible guide is mounted to a minimum of one among the shaft and also the handle, the visual guide manufacturing visual steerage for inform at a minimum of 2 landmarks of the pelvis or mounted relative to the pelvis, supported a pre-planned patient-specific relation between the a minimum of 2 landmarks and a desired cotyloidal cup orientation relative to the landmarks. a way for homing associate degree cotyloidal cup before impacting in associate degreecotyloid cavity of a pelvis is additionally provided.

CROSS-REFERENCE TO connected APPLICATION The present application claims priority on U.S. tentative application No. 61/986,515, filed on Gregorian calendar month. 30, 2014, the contents of that area unit incorporated herein by reference.

TECHNICAL FIELD The present application relates to hip surgery, and additional significantly to a tool and technique for providing placement steerage throughout cup implanting.

BACKGROUND OF THE ART In hip replacement surgery, a standard procedure is to resurface the cotyloid cavity to then place a cup in this. The deep-rooted cup is usually interfaced with associate degree implant head on the femoris. the mix of the cup and also the implant head replicate the ball-and-socket joint, thence permitting movement of the femoris relative to the pelvis. For this reason, the positioning of the cup implant within the cotyloid cavity should be finished accuracy and preciseness. Indeed, the cup is ideally positioned in keeping with given abduction and anteversion relative to the pelvis, to maximize a spread of motion of the femoris relative to the pelvis, to avoid leg length discrepancy, and to preserve the longevity of the ball-and-socket joint implants.

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