Method and apparatus for performing anterior hip surgery
First Claim
1. A surgical registration device comprising:
- a support bar havingfirst end, a second end, and a length,a longitudinal axis defined by the length of the support bar, anda nominal plane;
a first leg removably attached to the first end of the support bar;
a second leg removably and adjustably attached to the second end of the support bar, where the second leg is adjustable in a direction along the longitudinal axis;
a third leg removably and adjustably attached to the support bar, where the third leg is adjustable in a first direction along the longitudinal axis and in a second direction orthogonal to the longitudinal axis; and
a direction indicator mounted to the support bar, the direction indicator defining a predetermined orientation relative to the nominal plane defined by the support bar.
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Accused Products
Abstract
An apparatus registers a patient'"'"'s pelvis during surgery by establishing a patient-specific, supine pelvic reference plane. The apparatus may include an elongated support arm having three legs, at least two of which may be moveable along the arm. The first leg may contact the patient'"'"'s right anterior superior iliac spines (ASIS), the second leg may contact the left ASIS, and the third leg may contact an anterior aspect of the ischium of the patient'"'"'s pelvis below the acetabulum of the hip being operated on. The distances between the first leg and the second and third legs may be determined preoperatively so that the legs dock to the desired points. The apparatus may further include a direction indicator configured to point in a desired orientation for inserting an acetabular cup component in the patient'"'"'s acetabulum.
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Citations
24 Claims
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1. A surgical registration device comprising:
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a support bar having first end, a second end, and a length, a longitudinal axis defined by the length of the support bar, and a nominal plane; a first leg removably attached to the first end of the support bar; a second leg removably and adjustably attached to the second end of the support bar, where the second leg is adjustable in a direction along the longitudinal axis; a third leg removably and adjustably attached to the support bar, where the third leg is adjustable in a first direction along the longitudinal axis and in a second direction orthogonal to the longitudinal axis; and a direction indicator mounted to the support bar, the direction indicator defining a predetermined orientation relative to the nominal plane defined by the support bar. - View Dependent Claims (20, 21, 22, 23, 24)
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2. An apparatus for establishing a supine pelvic reference plane for a patient, the apparatus comprising:
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an elongated support arm having a length, the length of the elongated support arm defining a longitudinal axis; a first leg attached to an end of said elongated support arm; a second leg slidably attached to said elongated support arm; and a third leg slidably attached to said elongated support arm, wherein the first, second, and third legs have tips, and the second and third legs are moveable in a direction along the longitudinal axis defined by the length of the elongated support arm and the third leg is further moveable in a direction orthogonal to the longitudinal axis defined by the length of said elongated support arm such that; the tip of the first leg is configured to contact a left anterior superior iliac spine of the patient, the tip of the second leg is configured to contact a right anterior superior iliac spine of the patient, and the tip of the third leg is configured to contact an anterior aspect of an ischium of a pelvis of the patient below an acetabulum, and further wherein the apparatus defines the supine pelvic reference plane for the patient, and the supine pelvic reference plane has a known relationship to a standard reference plane for the patient. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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defining a standard pelvic plane for a patient; defining a supine pelvic reference plane for the patient, wherein the supine pelvic reference plane includes a first point at a left anterior superior iliac spine of the patient, a second point at a right anterior superior iliac spine of the patient, and a third point at an anterior aspect of an ischium of the patient below an acetabulum of the patient; establishing a mathematical relationship between the standard pelvic plane and the supine pelvic reference plane; determining an orientation for a prosthetic component relative to the standard pelvic plane; translating the orientation to the supine pelvic reference plane; docking a registration device to predetermined points on a pelvis of the patient; and providing a directional indicator on the registration device, where the directional indicator is configured to define the orientation for the prosthetic component. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification