Borggreve-type rotationplasty

Borggreve-type rotationplasty is a surgical procedure that involves removing the knee and part of the femur, rotating the distal leg segment by 180°, and reattaching it so the ankle functions as a knee within a prosthesis. On paper, the concept is clear. In prosthetic fitting, it's rarely that simple.

What it really means for prosthetic fitting

1. Hard-to-standardize anatomy

• Asymmetrical, irregular volumes.
• Malleoli, heel and plantar arch located in unusual load-bearing areas.
• Bony prominences very close to the skin surface.
• Skin often fragile (major surgery, possible radiotherapy).

2. Joint axis is not the mechanical axis

• The ankle axis is not naturally positioned where you would want a prosthetic knee axis.
• There are often offsets between the anatomical axis, the prosthetic axis, and the load line.
• Alignment is often iterative, with unavoidable trade-offs. The patient compensates a lot, sometimes too much.

How VYTRUVE handles it

During the scan, it wasn't possible to capture everything in a single pass. To finalize the case, our teams carried out the necessary rescans, then handled the reconstruction and 3D printing of the positive model. If you run into an atypical case or a borderline situation, contact us from the start. We'll review it with you and quickly suggest the most suitable solution.