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US 4,907,578 AGranted
Method and instruments for resection of the distal femur
OwnerThomas D. Peterseninventor
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OwnerThomas D. Peterseninventor
Estimating the term…
The present invention relates to an improved method and instruments for a resection of the distal femur. The parent application discloses a femoral alignment guide/rod including a plate insertable within a guide slot in the resector which is also used for the guided insertion of a cutting tool. The present invention improves upon this structure by providing an auxiliary attachment member on the resector allowing attachment of a new femoral alignment guide/rod on the resector housing proximal to the cutting tool guide slot, which new guide/rod allows easier access to various resector components. In a further aspect, structure is provided allowing the use of the resector with an intramedullary rod to increase accuracy. In this aspect, a gauge is incorporated in the resector which allows compensation for the angle between the mechanical axis of the leg and the longitudinal extent of the internal cavity of the femur while also allowing compensation or correction for specific anatomical conditions such as, for example, valgus correction.
In a distal femoral resector for use in resecting the distal femur of a leg, said distal femur having a substantially flat surface formed on the anterior femoral cortex thereof, said resector comprising a base of substantially T-shaped configuration and adapted to be placed in overlying relation to said substantially flat surface, said substantially T-shaped configuration being defined by a proximal leg portion and a distal transverse portion, a rotating rod rotatably mounted through said leg portion and including means for attaching said base to said distal femur, said rod being rotatable to facilitate firm and flush attachment of said base to said substantially flat surface, an intercondylar notch pin attached to a distal side of said transverse portion;
In a distal femoral resector for use in resecting the distal femur of a leg, said distal femur having a substantially flat surface formed on the anterior femoral cortex thereof, said resector comprising a base of substantially T-shaped configuration and adapted to be placed in overlying relation to said substantially flat surface, said substantially T-shaped configuration being defined by a proximal leg portion and a distal transverse portion, a rotating rod rotatably mounted through said leg portion and including means for attaching said base to said distal femur, said rod being rotatable to facilitate firm and flush attachment of said base to said substantially flat surface, the improvement comprising:
A method of resecting the distal femur of a leg, including the steps of:
A method of resecting the distal femur of a leg, including the steps of:
A method of resecting the distal femur of a leg, including the steps of:
A method of resecting the distal femur of a leg, including the steps of:
Dependencies are inferred from the claim text.