A-D, Technique of type BI rotationplasty (see text). E-G, Technique of type BII rotationplasty (see text).(Redrawn from Winkelmann WW: Hip rotationplasty for malignant tumors of the proximal part of the femur, J Bone Joint Surg 68A:362, 1986.) SEE TECHNIQUES 24.23 AND 24.24.