System and method for ligament insertion in knee joint surgeries using adaptive migration of ligament insertion geometry
First Claim
1. A method for providing feedback during ligament insertion in knee joint orthopedic surgeries comprising:
- imaging a knee joint using an imaging device to generate knee joint articular surface geometry data;
measuring the position of the ligaments in the knee joint using a position measuring device to generate distal ligament insertion sites data;
measuring the strain of the ligaments in the knee joint using a strain measuring device to generate ligament reference strain data;
moving the knee joint using a drive system to generate data of a prescribed kinematic path for the knee joint;
receiving said knee joint articular surface geometry data, said distal ligament insertion sites data, said ligament reference strain data, and said data of a prescribed kinematic path for the knee joint by an adaptive migration application and generating outputs comprising sets of isotonic, hypertonic and hypotonic points representing proximal insertion sites of a ligament fiber associated with prescribed distal ligament insertion sites, such that the ligament fiber stretched between two isotonic points has minimal change in tension throughout a flexion arc.
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Abstract
A method for providing feedback during ligament insertion in knee joint orthopedic surgeries includes providing an imaging device providing knee joint articular surface geometry data, providing a position measuring device providing distal ligament insertion sites, providing a strain measuring device providing ligament reference strain, providing a drive system providing a prescribed kinematic path for the knee joint and providing an adaptive migration application. The adaptive migration application receives inputs including the knee joint articular surface geometry data, the distal ligament insertion sites, the ligament reference strain and the prescribed kinematic path for the knee joint and generates outputs including sets of isotonic, hypertonic and hypotonic points representing proximal insertion sites of a ligament fiber associated with prescribed distal ligament insertion sites.
20 Citations
9 Claims
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1. A method for providing feedback during ligament insertion in knee joint orthopedic surgeries comprising:
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imaging a knee joint using an imaging device to generate knee joint articular surface geometry data; measuring the position of the ligaments in the knee joint using a position measuring device to generate distal ligament insertion sites data; measuring the strain of the ligaments in the knee joint using a strain measuring device to generate ligament reference strain data; moving the knee joint using a drive system to generate data of a prescribed kinematic path for the knee joint; receiving said knee joint articular surface geometry data, said distal ligament insertion sites data, said ligament reference strain data, and said data of a prescribed kinematic path for the knee joint by an adaptive migration application and generating outputs comprising sets of isotonic, hypertonic and hypotonic points representing proximal insertion sites of a ligament fiber associated with prescribed distal ligament insertion sites, such that the ligament fiber stretched between two isotonic points has minimal change in tension throughout a flexion arc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification