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US 12,268,616 B2Granted
Range of motion evaluation in orthopedic surgery
AssigneeExactech, Inc.
InventorPierre Couture
Life of this patent
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Abstract
A system and method may be used to evaluate soft tissue. A hip joint evaluation may use an adjustable spacer, such as varying sized physical spacers or an inflatable bladder, along with a sensor to measure force, pressure, gap distance, or the like, for example during a range of motion test. A method may include using a maximum pressure during the range of motion test to determine a maximum pressure during the range of motion test. The maximum pressure may be output for display on a user interface.
Claims18
A method, comprising:
- generating a preoperative plan for a hip arthroplasty;
- providing a surgical system including:
- a computer system, and
- an adjustable spacer having one or more integral pumps;
- performing a preparation of a patient's hip joint;
- inserting a trial in a proximal femur of the hip joint during a hip replacement procedure, the trial including the adjustable spacer in a neck portion of the trial;
- inflating the adjustable spacer to a fixed neck length;
- measuring force on the adjustable spacer throughout a range of motion test of the hip joint using a force sensor device, with the trial in place and the adjustable spacer inflated at the fixed neck length;
- tracking a position of bones of the hip joint utilizing an optical tracking system operatively coupled to the surgical system throughout the range of motion test;
- determining a maximum force measured by the force sensor device during the range of motion test;
- outputting the maximum force for display on a user interface of the computer system;
- and
- changing a planned femoral implant size of the preoperative plan based on the maximum force.
10 more elements
A method, comprising:
- generating a preoperative plan for a hip arthroplasty;
- providing a surgical system including:
- a computer system, and
- an adjustable spacer having one or more integral pumps;
- performing a preparation of a patient's hip joint;
- inserting a trial in a proximal femur of the hip joint during a hip replacement procedure, the trial including the adjustable spacer in a neck portion of the trial;
- inflating the adjustable spacer to a fixed pressure;
- measuring neck length on the adjustable spacer throughout a range of motion test of the hip joint using a sensor device, with the trial in place and the adjustable spacer inflated at the fixed pressure;
- tracking a position of bones of the hip joint utilizing an optical tracking system operatively coupled to the surgical system throughout the range of motion test;
- determining a maximum neck length measured by the force sensor device during the range of motion test;
- outputting the maximum neck length for display on a user interface of the computer system, and;
- changing a planned femoral implant size of the preoperative plan based on the maximum neck length.
9 more elements
Dependencies are inferred from the claim text.