Hip replacement navigation system and method

Abstract

A hip joint navigation system is provided that includes a base having at least one channel disposed therethrough for receiving a pin for mounting the base to the pelvis. A mount feature is disposed on a top surface. A registration jig is configured to couple with the base and to engage anatomical landmarks. In some aspects, a patient specific jig system for hip replacement is provided including an engagement surface formed to closely mate to acetabular bone contours of a specific patient and a registration feature configured to be in a pre-determined orientation relative to an acetabulum the patient when the jig is coupled with acetabular bone contours of the specific patient. In other aspects, methods of using the systems are provided.

1 - 64 . (canceled) 
     
     
         65 . A system for performing a hip joint replacement procedure, the hip joint comprises a pelvis and a femur that is movable relative to the pelvis, the system comprising:
 a jig configured to be coupled to the pelvis of the patient, adjacent to the hip joint, with the femur of the hip joint in an extended position;   a laser projecting device coupled or configured to couple to the jig,   wherein the laser projecting device is configured to project a laser light onto a target to illuminate a portion of the target away from the hip joint, wherein the laser projecting device is configured to remain fixed to the pelvis during the hip replacement procedure,   wherein laser projecting device is configured to facilitate aligning the femur with the pelvis during the hip replacement procedure; and   at least one inertial sensor configured to track the orientation of the pelvis during the hip replacement procedure.   
     
     
         66 . The system of  claim 65 , wherein the jig comprises an articulated member. 
     
     
         67 . The system of  claim 66 , wherein the articulated member comprises a ball joint. 
     
     
         68 . The system of  claim 66 , wherein the laser projecting device is configured to be articulated to direct the laser light to illuminate the portion of the target. 
     
     
         69 . The system of  claim 65 , further comprising a probe. 
     
     
         70 . The system of  claim 69 , further comprising an orientation device coupled to the probe, wherein the orientation device is configured to track the orientation of the probe. 
     
     
         71 . The system of  claim 65 , wherein the laser projecting device and the at least one inertial sensor are disposed in a housing. 
     
     
         72 . The system of  claim 65 , wherein the laser projecting device projects a point, a plane, and or a cross-hair onto the target. 
     
     
         73 . A system for performing a hip joint replacement procedure, the hip joint comprises a pelvis and a femur that is movable relative to the pelvis, the system comprising:
 a jig configured to be coupled to the pelvis of the patient, adjacent to the hip joint;   a laser projecting device coupled or configured to couple to the jig,   wherein the laser projecting device is configured to project a laser light onto a target,   wherein laser projecting device is configured to facilitate comparing the position of the femur relative to the pelvis after hip replacement to the position of the femur relative to the pelvis before hip replacement; and   at least one inertial sensor coupled or configured to couple to the jig, wherein the at least one inertial sensor is configured to track the orientation of the pelvis.   
     
     
         74 . The system of  claim 73 , wherein the jig comprises an articulated member. 
     
     
         75 . The system of  claim 74 , wherein the articulated member comprises a ball joint. 
     
     
         76 . The system of  claim 74 , wherein the laser projecting device is configured to be articulated to direct the laser light. 
     
     
         77 . The system of  claim 73 , further comprising a probe. 
     
     
         78 . The system of  claim 77 , further comprising an orientation device coupled to the probe, wherein the orientation device is configured to track the orientation of the probe. 
     
     
         79 . The system of  claim 73 , wherein the laser projecting device and the at least one inertial sensor are disposed in a housing. 
     
     
         80 . A system for performing a hip joint replacement procedure, the hip joint comprises a pelvis and a femur that is movable relative to the pelvis, the system comprising:
 a jig configured to be coupled to the pelvis of the patient, adjacent to the hip joint, with the femur of the hip joint in an extended position;   a laser projecting device configured to couple to the jig,   wherein the laser projecting device is configured to project a laser light onto a target to illuminate a portion of the target away from the hip joint,   wherein the laser projecting device provides a visual guide to replicate the original position of the femur relative to the pelvis; and   at least one inertial sensor configured to track the orientation of the pelvis during a hip replacement procedure.   
     
     
         81 . The system of  claim 80 , wherein the jig comprises an articulated member. 
     
     
         82 . The system of  claim 80 , further comprising a probe. 
     
     
         83 . The system of  claim 82 , further comprising an orientation device coupled to the probe, wherein the orientation device is configured to track the orientation of the probe. 
     
     
         84 . The system of  claim 80 , wherein the probe is configured to facilitate registering a portion of the femur to confirm leg length and/or joint off-set.