Patient-specific femoral version guide
View Patent ↗An orthopedic device includes a monolithic patient-specific guide. The patient-specific guide includes a three-dimensional contact surface preoperatively configured from medical scans of a specific patient as a negative surface of a medial portion of a proximal femoral bone of the patient according to a preoperative surgical plan for the patient. The guide also includes a proximal planar surface configured for guiding a resection of a femoral neck of the patient, and a scale formed on the planar surface. The scale is configured for indicating a preoperatively planned femoral version of a femoral stem implant and deviations therefrom.
1. An orthopedic device comprising:
a patient-specific guide having:
a three-dimensional contact surface preoperatively configured from medical scans of a specific patient as a negative surface of a medial portion of a proximal femoral bone of the patient according to a preoperative surgical plan for the patient;
a proximal planar surface configured for guiding a resection of a femoral neck of the patient; and
a scale on the planar surface, the scale configured for indicating a preoperatively planned femoral version of a femoral stem implant and deviations therefrom.
2. The orthopedic device of claim 1 , further comprising a version assembly including a body and a pointer element, the version assembly configured to indicate intraoperatively an actual femoral stem version on the scale of the patient specific guide when the version assembly is coupled to a fully seated broach for a femoral stem implant.
3. The orthopedic device of claim 2 , wherein the body of the version assembly includes an internal bore configured to receive a proximal post of a broach for a femoral stem implant.
4. The orthopedic device of claim 3 in combination with a broach for the femoral stem.
5. The orthopedic device of claim 4 , further comprising a trial trunnion for the broach and a trial femoral head for the trunnion.
6. The orthopedic device of claim 5 , in combination with a hip replacement implant.
7. The orthopedic device of claim 1 , wherein the medial portion includes a lesser trochanter and the contact surface is configured to include a portion negative of the lesser trochanter, wherein the patient-specific guide is monolithic.
8. An orthopedic device comprising:
a patient-specific guide having a three-dimensional contact surface preoperatively configured from medical scans of a specific patient as a negative surface of a medial portion of a proximal femoral bone of the patient according to a preoperative surgical plan for the patient, the medial portion including a lesser trochanter, the patient specific guide having a proximal planar surface configured for guiding a resection of a femoral neck of the patient and a scale on the planar surface, the scale configured for indicating a preoperatively planned femoral version of a femoral stem implant and deviations therefrom;
a broach for a femoral stem implant, the broach having a proximal post; and
a version assembly having a body with an inner bore receiving the post of the broach and a pointer element attached to the body and rotatable with the broach, the pointer element indicating on the scale a femoral version determined by the broach.
9. The orthopedic device of claim 8 , wherein the patient-specific guide is disposable and monolithic.
10. The orthopedic device of claim 8 , in combination with a plurality of trunnions and a plurality of trial femoral heads.
11. The orthopedic device of claim 8 , in combination with a hip replacement implant.