Method for measuring the axial (transverse), coronal (frontal) and sagittal (bisection) alignment of a lower limb

A computer-implemented method for providing hip version and tibial torsion values, the method comprising:

• receiving a plurality of images from a three-dimensional scan of at least one lower limb of a patient, the images including plurality of image sets, wherein the image sets each include an image in a frontal plane, and image in a sagittal plane, and an image in a transverse plane;
• determining a femoral neck axis by determining a center of a femoral head on a first image set and a center of a base of a femoral neck on a second image set;
• determining a distal femoral axis associated with an axis of rotation of a femur of a patient at a distal end of the femur, wherein the distal femoral axis is identified in a third image set and a fourth image set;
• determining an angle between the femoral neck axis and the distal femoral axis, wherein the angle between the femoral neck axis and the distal femoral axis is representative of hip version;
• determining a proximal tibia axis associate with an axis of rotation of a tibia of the patient at a proximal end of the tibia, wherein the proximal tibia axis is identified in a fifth image set and a sixth image set;
• determining a distal tibia axis associated with an axis of rotation of the tibia of the patient at a distal end of the tibia, wherein the distal tibia axis is identified in a seventh image set, an eighth image set, a ninth image set, and a tenth image set;
• and
• determining an angle between the proximal tibia axis and the distal tibia axis neck axis and the distal femoral axis, wherein the angle between the femoral neck axis and the distal femoral axis is representative of tibial torsion.

A computing device for providing hip version and tibial torsion values, the computing device comprising:

• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, cause the one or more processors to:
• determine a three-dimensional volume based on a scan of a lower limb of a patient;
• identify a level of hip version by referring to a first axis of symmetry of a femoral neck and a second axis of symmetry of a distal portion of a femur, wherein hip version is defined by an angle between the first axis of symmetry and the second the second axis of symmetry;
• identify a level of tibial torsion by referring to a third axis of symmetry of a proximal portion of a tibia and a fourth axis of symmetry of a distal portion of the tibia, wherein tibial torsion is defined by an angle between the third axis of symmetry and the fourth axis of symmetry;
• and
• provide the level of hip version and the level of tibial torsion to a user.