Patellar retractor and method of surgical procedure on knee
First Claim
1. A method of performing a surgical procedure on a knee comprising the following successive steps of:
- Incising an anterior zone and one of an external or internal zone of the knee to form an incision;
holding back edges of the incision to reveal at least part of a corresponding external or internal femoral condyle of the knee;
introducing a pointed distal end of a patellar retractor into a femoral intercondylar space of the knee through the incision;
abutting the pointed distal end on a wall of the revealed condyle facing the femoral intercondylar space; and
pushing part of a quadriceps muscle tendon containing the patella in a medial-lateral direction towards the unrevealed condyle to dislocate a patella of the knee using the patellar retractor as a lever.
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Accused Products
Abstract
The distal end part of the retractor according to the invention is provided both with terminal tips for abutment on one of the femoral condylar walls which define therebetween the intercondylar space, and with a wing extending laterally in projection from this end part in order to form a frontal surface for thrust, in a medial-lateral direction, of that part of the quadriceps muscle tendon containing the patella when the tips are in abutment in the intercondylar space. By using this retractor as a lever, the wing efficiently reclines the patella, without turning it completely on itself, entirely exposing one of the femoral condyles. This invention is more particularly applicable to a surgical procedure for implanting a unicompartmental knee prosthesis.
106 Citations
8 Claims
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1. A method of performing a surgical procedure on a knee comprising the following successive steps of:
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Incising an anterior zone and one of an external or internal zone of the knee to form an incision; holding back edges of the incision to reveal at least part of a corresponding external or internal femoral condyle of the knee; introducing a pointed distal end of a patellar retractor into a femoral intercondylar space of the knee through the incision; abutting the pointed distal end on a wall of the revealed condyle facing the femoral intercondylar space; and pushing part of a quadriceps muscle tendon containing the patella in a medial-lateral direction towards the unrevealed condyle to dislocate a patella of the knee using the patellar retractor as a lever. - View Dependent Claims (2, 3, 4, 5)
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6. A method of implanting a knee prosthesis comprising:
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incising a front part of a knee to form an incision to reveal at least part of a femoral condyle; introducing a distal end of a patellar retractor into a femoral intercondylar space of the knee through the incision, wherein the distal end of the patellar retractor includes a surface portion and a tip portion; abutting the tip portion of the distal end on a wall of the femoral condyle facing the femoral incondylar space to form a resistant point of abutment; contacting the surface portion of the distal end against a tendon of a quadriceps muscle; pushing part of the quadriceps muscle tendon with the patellar retractor to recline a patella of the knee; and implanting a prosthesis within the incision. - View Dependent Claims (7, 8)
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Specification