Abstract: The invention provides a surgical apparatus for performing a controlled resection of the neck of a femur during a hip replacement procedure, the surgical apparatus comprising: a body portion. The body portion comprises a frame that is mountable on a femoral head of the femur to position the body portion with respect to a centre of the femoral head. The body portion also includes a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending from the frame and including markings for reading off a femoral head offset. The apparatus also includes a connector for mounting the body portion on an intramedullary rod located in an intramedullary canal of the femur, and for slidably receiving the arm. The connector includes a pointer. The femoral head offset is indicated by reading the position of the pointer relative to the markings on the arm.

Abstract: The present invention relates generally to the field of orthopedics, and more particularly to a pelvic referencing guide and methods of using the guide in orthopaedic surgery, specifically total hip arthroplasty.

Abstract: The invention provides a surgical device for performing a controlled resection of the neck of a femur during a hip replacement procedure. The surgical device comprises a body portion having: a frame comprising an aperture dimension for receipt of a femoral head of the femur to position the body portion with respect to a centre of the femoral head; a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending between the frame and the resection guide. The body portion includes a linear alignment surface for alignment with a femoral shaft axis of the femur while the frame is mounted on the anterior or posterior aspect of the femoral head.

Abstract: A surgical device and method for performing a controlled resection of the neck of a femur during a hip replacement procedure. The surgical device includes a body portion. The body portion has a mounting portion. The mounting portion is mountable on a femoral head of the femur to position the body portion with respect to a center of the femoral head. The body portion also has an opening for mounting the body portion on an intramedullary pin located in an intramedullary canal of the femur. The surgical device also includes a resection guide. The resection guide is adjustably locatable at a plurality of positions on the body portion for positioning a resection plane indicator of the resection guide with respect to the neck of the femur according to a measured radius/diameter of the femoral head.

Abstract: A surgical kit and method for performing a controlled resection of the neck of a femur during a hip replacement procedure. The kit includes a mounting portion. The mounting portion includes guide holes for inserting guide pins into the femoral head while the mounting portion is located on an anterior aspect of the femoral head. The kit also includes a body portion connected to the mounting portion. The body portion includes an opening for mounting the body portion on an intramedullary pin. The kit also includes a resection guide including guide holes having the same layout as the guide holes of the mounting portion, to allow the resection guide to be mounted on the anterior aspect of the femoral head with the guide pins inserted into the femoral head for positioning a resection plane indicator of the resection guide with respect to the neck of the femur.

Abstract: A surgical device and method for performing a controlled resection of the neck of a femur during a hip replacement procedure. The surgical device includes a body portion. The body portion has a mounting portion. The mounting portion is mountable on a femoral head of the femur to position the body portion with respect to a center of the femoral head. The body portion also has an opening for mounting the body portion on an intramedullary pin located in an intramedullary canal of the femur. The surgical device also includes a resection guide. The resection guide is adjustably locatable at a plurality of positions on the body portion for positioning a resection plane indicator of the resection guide with respect to the neck of the femur according to a measured radius/diameter of the femoral head.

Abstract: The invention provides a surgical device for performing a controlled resection of the neck of a femur during a hip replacement procedure. The surgical device comprises a body portion having: a frame comprising an aperture dimension for receipt of a femoral head of the femur to position the body portion with respect to a centre of the femoral head; a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending between the frame and the resection guide. The body portion includes a linear alignment surface for alignment with a femoral shaft axis of the femur while the frame is mounted on the anterior or posterior aspect of the femoral head.

Abstract: The invention provides a surgical apparatus for performing a controlled resection of the neck of a femur during a hip replacement procedure, the surgical apparatus comprising: a body portion. The body portion comprises a frame that is mountable on a femoral head of the femur to position the body portion with respect to a centre of the femoral head. The body portion also includes a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending from the frame and including markings for reading off a femoral head offset. The apparatus also includes a connector for mounting the body portion on an intramedullary rod located in an intramedullary canal of the femur, and for slidably receiving the arm. The connector includes a pointer. The femoral head offset is indicated by reading the position of the pointer relative to the markings on the arm.

Abstract: A surgical kit and method for performing a controlled resection of the neck of a femur during a hip replacement procedure. The kit includes a mounting portion. The mounting portion includes guide holes for inserting guide pins into the femoral head while the mounting portion is located on an anterior aspect of the femoral head. The kit also includes a body portion connected to the mounting portion. The body portion includes an opening for mounting the body portion on an intramedullary pin. The kit also includes a resection guide including guide holes having the same layout as the guide holes of the mounting portion, to allow the resection guide to be mounted on the anterior aspect of the femoral head with the guide pins inserted into the femoral head for positioning a resection plane indicator of the resection guide with respect to the neck of the femur.

Abstract: The present invention relates generally to the field of orthopedics, and more particularly to a pelvic referencing guide and methods of using the guide in orthopaedic surgery, specifically total hip arthroplasty.

Abstract: A surgical instrument alignment guide comprising a mount (2) arranged to be coupled to a bone of a patient, an alignment rod (4), a guide rod (24) and an indicator (26). The alignment rod (4) has a first end pivotally coupled to the mount (2) such that the inclination of the alignment rod (4) relative to the mount (2) is adjustable. The guide rod (24) is couplable to a second end of the alignment rod (4) at an adjustable angle and orientation such that the guide rod (24) can extend transverse to the alignment rod (4). The indicator (26) is coupled to the guide rod (24) to indicate when the guide rod (24) lies at a desired angle relative to a horizontal axis. Also disclosed is a method of aligning a surgical instrument using the surgical instrument alignment guide.

Abstract: A surgical instrument alignment guide comprising a mount (2) arranged to be coupled to a bone of a patient, an alignment rod (4), a guide rod (24) and an indicator (26). The alignment rod (4) has a first end pivotally coupled to the mount (2) such that the inclination of the alignment rod (4) relative to the mount (2) is adjustable. The guide rod (24) is couplable to a second end of the alignment rod (4) at an adjustable angle and orientation such that the guide rod (24) can extend transverse to the alignment rod (4). The indicator (26) is coupled to the guide rod (24) to indicate when the guide rod (24) lies at a desired angle relative to a horizontal axis. Also disclosed is a method of aligning a surgical instrument using the surgical instrument alignment guide.

Abstract: A surgical instrument alignment guide comprising a mount (2) arranged to be coupled to a bone of a patient, an alignment rod (4), a guide rod (24) and an indicator (26). The alignment rod (4) has a first end pivotally coupled to the mount (2) such that the inclination of the alignment rod (4) relative to the mount (2) is adjustable. The guide rod (24) is couplable to a second end of the alignment rod (4) at an adjustable angle and orientation such that the guide rod (24) can extend transverse to the alignment rod (4). The indicator (26) is coupled to the guide rod (24) to indicate when the guide rod (24) lies at a desired angle relative to a horizontal axis. Also disclosed is a method of aligning a surgical instrument using the surgical instrument alignment guide.

Abstract: A computer aided surgery system, method, surgical method and instrument for guiding the positioning of an acetabular cup in a pelvis are described. The position of the transverse acetabular ligament of the pelvis and the position of the acetabular labrum of the pelvis are determined. The orientation of an acetabular plane including the acetabular labrum and the transverse acetabular ligament is calculated. A planned position for the acetabular cup is determined, in which an inlet plane of the cup is substantially parallel to the acetabular plane. The instrument comprises a mounting for attaching the instrument to a patient, a support, a guide defining a longitudinal axis, and for receiving a further instrument bearing the acetabular cup implant, and an adjustment mechanism. The adjustment mechanism can allow the angular orientation of the guide to be adjusted about at least two different axes to allow the inclination and version or anteversion of the longitudinal axis to be altered.

Abstract: A surgical instrument alignment guide comprising a mount (2) arranged to be coupled to a bone of a patient, an alignment rod (4), a guide rod (24) and an indicator (26). The alignment rod (4) has a first end pivotally coupled to the mount (2) such that the inclination of the alignment rod (4) relative to the mount (2) is adjustable. The guide rod (24) is couplable to a second end of the alignment rod (4) at an adjustable angle and orientation such that the guide rod (24) can extend transverse to the alignment rod (4). The indicator (26) is coupled to the guide rod (24) to indicate when the guide rod (24) lies at a desired angle relative to a horizontal axis. Also disclosed is a method of aligning a surgical instrument using the surgical instrument alignment guide.

Abstract: A computer aided surgery system, method, surgical method and instrument for guiding the positioning of an acetabular cup in a pelvis are described. The position of the transverse acetabular ligament of the pelvis and the position of the acetabular labrum of the pelvis are determined. The orientation of an acetabular plane including the acetabular labrum and the transverse acetabular ligament is calculated. A planned position for the acetabular cup is determined, in which an inlet plane of the cup is substantially parallel to the acetabular plane. The instrument comprises a mounting for attaching the instrument to a patient, a support, a guide defining a longitudinal axis, and for receiving a further instrument bearing the acetabular cup implant, and an adjustment mechanism. The adjustment mechanism can allow the angular orientation of the guide to be adjusted about at least two different axes to allow the inclination and version or anteversion of the longitudinal axis to be altered.