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Biomedical subjects

W W Winkelmann

Publications and source records attributed to W W Winkelmann.

4 recordsLinked to original sources
PubMed1996

Rotationplasty.

Today rotationplasty is well established as an acceptable procedure for limb salvage in patients who have a malignant tumor in the femur or tibia. The main indication is that it is the alternative to amputation. Rotationplasty should further be used in the very young child because of growth-dependent complications that can be expected after tumor resection and any kind of reconstruction. This article covers the classification of the different types of rotationplasties, the operative procedure, prosthetic care, and the functional results.

Artificial Limbs↗
PubMed1986

Hip rotationplasty for malignant tumors of the proximal part of the femur.

Disarticulation of the hip and hemipelvectomy have been the only surgical alternatives available for the adequate local control of malignant tumors of the proximal part of the femur in patients who are still growing. The use of proximal or total femoral implants is restricted to patients who have reached skeletal maturity. To improve the quality of survival for patients who have not yet reached skeletal maturity and have a malignant tumor of the proximal part of the femur, I have modified the rotationplasty procedure described by Van Nes for use in such lesions. After en bloc resection of the tumor, the distal part of the femur with the knee joint and leg is rotated 180 degrees and fixed to the lateral side of the pelvis. The knee joint then functions as a hinge hip joint and the ankle joint functions as a knee joint. This procedure was performed in eight patients, three of whom were followed for more than two years. All patients walked well with a prosthesis and the functional results were excellent. At the time of writing, there had been no recurrence of a tumor or pulmonary metastasis.

Adolescent↗
PubMedDate not supplied

[Clavicula pro humero--a new surgical method for malignant tumors of the proximal humerus].

In the majority of cases with malignant tumors in the proximal part of the humerus a limb saving tumor resection is possible. Reconstruction of the defect is necessary to maintain the length of the arm and to create a fulcrum for elbow flexion and extension. Several methods of reconstruction have been described in the literature including the fixation of distal humerus to the second rib or to the clavicle by means of Küntscher-nails, the implantation of a proximal humerus prosthesis without or with accompanying bone transplantation, a bridging of the defect using an allograft or an arthrodesis of the shoulder joint using free or vascularized bone transplants. The following paper describes a new surgical procedure whereby the vascularization of the clavicle is preserved and the clavicle used to bridge the defect. Although the follow-up period of the patients operated on so far in this way is relatively short, the functional advantages of this operation over the other forms of reconstruction can already be observed.

Adult↗