Osteotomy apparatus
First Claim
1. Surgical apparatus useful for both a tibia-femur osteotomy and a proximal tibia osteotomy comprising:
- a femur "T" unit including an elongated femur rod having a first and further end and an elongated femur bar having a mid portion and a medial and lateral end, said first end of said rod being securely joined to said mid-portion of said bar to form a substantially "T" shaped unit such that said "T" unit has an angle between said bar and said rod of between 80 degrees and 100 degrees, and said femur "T" unit further includes a femur pin secured to said femur "T" unit for securing said femur "T" unit to a selected bone of a patient such that said elongated rod is parallel to the selected bone and said elongated bar is substantially perpendicular to the selected bone;
a tibia "T" unit including an elongated tibia rod having a first and further end and an elongated tibia bar having a mid-portion, and a medial and a lateral end, said first end of said tibia rod being joined to said mid-portion of said tibia bar to form a "T" shaped unit, said rod and said bar having substantially a right angle there between, and also including a tibia pin secured to said tibia "T" unit for securing said tibia "T" unit to a selected bone of a patient such that said elongated rod is parallel to the selected bone and said bar is substantially perpendicular to the selected bone;
a femur and tibia guide unit, said femur guide unit suitable for guiding an osteotome blade along a first selected plane, and said tibia guide unit suitable for guiding said ostetome blade along a second selected plane, said guide units suitable for being detachably mounted to said femur and tibia bars respectively such that said first and second selected planes intersect the length of a patient'"'"'s leg at first and second locations respectively, said femur and tibia guide units suitable for mounting to the mid part of said femur and tibia bars for performing an osteotomy for total knee replacement, and suitable for mounting to said medial and lateral ends of said femur and tibia bars for preforming a proximal tibia osteotomy.
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Accused Products
Abstract
Surgical apparatus for use in guiding and aligning a surgical blade or osteotome for bone removal from the tibia and femur during a proximal tibia osteotomy or a total knee replacement operation is disclosed. The apparatus includes a femur "T" bar unit and a tibia "T" bar unit which are connected to the shaft of the femur and tibia bones respectively. First and second guide members provide means such that desired or selected cutting planes can be maintained during the bone cutting operation. These guides may be selectively attached to the mid portion of the T-bar units for providing a guide for total knee replacement or to the lateral or medial ends of the "T"-bar for a proximal tibia osteotomy. The medial and lateral ends of the cross bars of the T-bar units are secured to each other by means which are selected according to the operation to be performed. That is, a selection is made depending on whether the operation is to be a proximal tibia osteotomy or a total knee replacement. Although this apparatus is suitable for both, of particular importance is the use of this apparatus for a proximal tibia osteotomy in that an accurate measurement of the necessary correction may be determined and then a section or wedge of bone precisely removed to exactly achieve the necessary correction.
268 Citations
11 Claims
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1. Surgical apparatus useful for both a tibia-femur osteotomy and a proximal tibia osteotomy comprising:
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a femur "T" unit including an elongated femur rod having a first and further end and an elongated femur bar having a mid portion and a medial and lateral end, said first end of said rod being securely joined to said mid-portion of said bar to form a substantially "T" shaped unit such that said "T" unit has an angle between said bar and said rod of between 80 degrees and 100 degrees, and said femur "T" unit further includes a femur pin secured to said femur "T" unit for securing said femur "T" unit to a selected bone of a patient such that said elongated rod is parallel to the selected bone and said elongated bar is substantially perpendicular to the selected bone; a tibia "T" unit including an elongated tibia rod having a first and further end and an elongated tibia bar having a mid-portion, and a medial and a lateral end, said first end of said tibia rod being joined to said mid-portion of said tibia bar to form a "T" shaped unit, said rod and said bar having substantially a right angle there between, and also including a tibia pin secured to said tibia "T" unit for securing said tibia "T" unit to a selected bone of a patient such that said elongated rod is parallel to the selected bone and said bar is substantially perpendicular to the selected bone; a femur and tibia guide unit, said femur guide unit suitable for guiding an osteotome blade along a first selected plane, and said tibia guide unit suitable for guiding said ostetome blade along a second selected plane, said guide units suitable for being detachably mounted to said femur and tibia bars respectively such that said first and second selected planes intersect the length of a patient'"'"'s leg at first and second locations respectively, said femur and tibia guide units suitable for mounting to the mid part of said femur and tibia bars for performing an osteotomy for total knee replacement, and suitable for mounting to said medial and lateral ends of said femur and tibia bars for preforming a proximal tibia osteotomy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification