SYSTEMS AND METHODS FOR PROVIDING ALIGNMENT IN TOTAL KNEE ARTHROPLASTY

摘要

Systems and methods for providing alignment in total knee arthroplasty operations are provided herein. The systems and methods generally include a plurality of sensors coupled to a patient's bones or other surgical tools, the sensors detect their position and orientation in space and communicate this information to a processor. The processor can utilize the information to display data to a surgeon or other user regarding the position, angle, and alignment of a patient's bones, surgical tools, and the reconstructed knee joint.

主权项

1. A system for optimizing the alignment of a bone cutting guide for placement of a total knee prosthesis component comprising:
a first bone sensor having a sensor for determining the orientation of the first bone sensor and a transmitter for transmitting orientation data wirelessly, the first bone sensor being adapted to be fixed to a first bone; a first bone guide having a plurality of probes configured to contact anatomical features of the first bone to establish a known geometry with respect to a mechanical axis of the first bone, the first bone guide including a first bone guide sensor having a sensor determining the orientation of the first bone guide and a transmitter for transmitting orientation data wirelessly; a first bone cutting guide having one or more features for attaching to the patient's anatomy proximate to the first bone, the first bone cutting guide including a first bone cutting guide sensor having a sensor determining the orientation of the first bone cutting guide and a transmitter for transmitting orientation data wirelessly; and a processing unit comprising a computer processor coupled to a non-transitory memory and a display, the memory storing software instructions causing the computer processor to: i) receive orientation data wirelessly from the first bone sensor; ii) receive orientation data wirelessly from the first bone guide sensor; iii) apply the orientation data from the first bone guide sensor and the first bone sensor to calculate angular offsets that calibrate the first bone sensor's orientation data to reflect the orientation of the mechanical axis of the first bone; iv) receive orientation data wirelessly from the first bone cutting guide sensor; v) display to a user a difference between the orientation of the mechanical axis of the first bone and the orientation of the first bone cutting guide.