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Biomedical subjects

R van Twisk

Publications and source records attributed to R van Twisk.

12 recordsLinked to original sources
PubMed1993

"Impossible" reversed radial forearm free flap in microsurgical reconstruction.

The reversed radial forearm free flap is described and patient histories are presented to illustrate its unique reconstructive versatility. The valvular orientation of the deep and superficial forearm veins should theoretically oppose the reversed flow in this flap, but the venous flow is not compromised. In comparison to the anterograde forearm free flap the vascular pedicle is longer and the donor defect generates less functional and cosmetic complications because it is located on the proximal forearm. In a review of the literature anatomical details of the venous drainage are presented. Different opinions on reverse flow in forearm flaps are discussed and a new theory is proposed.

Adolescent↗
PubMed1991

Revascularised omentum in microvascular surgery.

The clinical use of microvascular surgery has developed considerably. Transplantation of skin, muscle, musculocutaneous island flaps, bone or osteocutaneous island flaps are possible for different reconstructive problems. These make the indication for revascularised omentum limited. A short review of the possible indications of revascularised omentum transplants and its complications is given.

Facial Hemiatrophy↗
PubMed1988

Is additional epidural sympathetic block in microvascular surgery contraindicated? A preliminary report.

The use of additional epidural sympathetic block during and after microvascular surgery in the lower extremities to prevent vasospasm is generally agreed on. However, a significant fall in the perfusion rate of the transplants was seen after application of bupivacaine (Marcain) via the epidural catheter. This effect has, to our knowledge, not been described before and is probably caused by the sympathectomy effect of this type of analgesia.

Anesthesia, Epidural↗
PubMed1988

Reconstruction of bone and soft tissue defects with free fibula transfer.

More and more it is recognized that for the reconstruction of extensive long-bone defects, especially in combination with soft tissue loss, revascularized bone transfers are preferable. For the reconstruction of larger bony defects, revascularized crista iliaca bone or fibula bone are the first choice. The fibula has certain advantages over the crista: It is a straight cortical bone, the length is almost always sufficient to reconstruct large defects, and soft tissue reconstruction is possible by including a skin island. A short description of the operation technique, pitfalls, and indications are given.

Bone Cysts↗
PubMed1988

Pressure resistance of breast implants as a function of implantation time.

Using a relatively simple test, breaking pressures of 50 gel-filled breast implants that had to be removed have been evaluated. These pressures values were compared with forces generated in executing closed capsulotomy (nutcracker method). It is shown that there is a negative correlation between pressure resistance of breast implants and duration of implantation. After an implantation time of more than five years, our advice is to perform closed capsulotomy if done in a very gentle way, and implant rupture then certainly has to be taken into account.

Breast↗
PubMed1987

[Surgical treatment of decubitus ulcers in the area of the ischium, sacrum and trochanter major].

The operative management of pressure sores in the ischial, sacral and trochanteric region is based on the gluteus maximus muscle and its vascularization. Pressure sores in the sacral region were closed with eleven V-Y musculocutaneous flaps, for the ischial region with fifteen pendulum flaps, and for the trochanteric region with eight medial thigh flaps. In the four years follow-up of 24 patients three recurrences occurred and the post-operative morbidity was acceptable. The operative technique and the complications are further discussed.

Buttocks↗
PubMed1984

Massive deformation of the scrotal wall by idiopathic calcinosis of the scrotum.

Idiopathic calcinosis of the scrotum is a rare disease that may cause massive deformation of the scrotal wall. The first patient we present was also known to have neurofibromatosis. In the second patient we describe, nodules of idiopathic calcinosis of the scrotum were seen with walls that evidenced no epithelial lining, as well as calcification in epithelial cysts. At present, the only possible treatment is excision, and we excised the afflicted skin without problems in primary wound closure.

Adult↗