Use of the Van Nes Prosthesis for Children with Osteogenic Sarcoma
PAUL J. OSBORNE, BSC, CP(C)*
The Van Nes rotationplasty prosthesis has been a common method of prosthetic management for proximal femoral focal deficiency since the 1950's. The main advantage of the prosthesis is retention of control of the prosthetic knee through the use of the anatomic ankle. Eleven children with osteogenic sarcoma have undergone a similar rotation procedures and have been fitted with a Van Nes prosthesis at The Hugh MacMillan Medical Centre. The main differences between the groups are:
- Stability of the hip
- Use of a thigh lacer as opposed to a hard ischial weight-bearing brim.
Improved control of the prosthesis, as well as a better gait pattern and increased muscle power, have been observed in all osteogenic sarcoma patients. With this new fitting technique, children who would have once been transfemoral or hip disarticulation amputees can now look forward to a more cosmetic gait, improved control of the prosthesis, and maximum growth of the affected limb.
*The Hugh MacMillan Medical Centre, 350 Rumsey Road, Toronto, Ontario M4G 1R8