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Biomedical subjects

Isao Koshima

Publications and source records attributed to Isao Koshima.

42 records · Page 3Linked to original sources
PubMed2003

Medial and lateral malleolar perforator flaps for repair of defects around the ankle.

Reconstruction for defects around the ankle continues to be challenging. Repairs have been effected with the dorsalis pedis flap, the medial plantar flap, and with reverse-flow island flaps using the anterior and posterior tibial systems and the peroneal system. However, sacrifice of the major vessels of the lower leg and wide and long scars at the donor site are disadvantages of these flaps. To overcome these disadvantages, the authors developed island lateral and medial malleolar flaps with the perforators located close to the ankle. These flaps are easy to elevate, involve a short operating time, require no sacrifice of major vessels or muscles of the lower legs, and the use of these adipofascial flaps makes donor scars more acceptable. Malleolar perforator flaps are suitable for the repair of small ankle defects.

Adult↗
PubMed2003

Percutaneous sclerotherapy for venous malformations using polidocanol under fluoroscopy.

This retrospective study evaluated the safety and efficacy of using polidocanol with X-ray fluoroscopy for percutaneous sclerotherapy of venous malformations of the limbs, head, and neck. The subjects were 16 of 18 patients who presented to our department with venous malformations. Two patients were excluded because they were unlikely to benefit from the treatment. Of the 16 included in the study, 1 could not be treated because of inaccessibility, and another was lost to follow-up. Among the 14 cases that we were able to follow-up, 11 cases had had pain as their primary symptom. Following treatment, this symptom remained unchanged in 1 patient, was improved in 4, and had disappeared in 6; however, there was a recurrence of pain for 3 of these patients. Two patients had sought treatment for cosmetic purposes; following treatment, the lesion disappeared in one and showed a significant reduction in the other. The remaining patient presented with a primary symptom of mouth bleeding, which disappeared following treatment. There were no critical complications. Percutaneous sclerotherapy of venous malformations using polidocanol is safe and effective, and permits repeat treatments. The efficacy is especially good for resolving pain, and complications are minor. It is desirable to use fluoroscopy for these procedures

Administration, Cutaneous↗
PubMed2002

Free radial forearm osteocutaneous perforator flap for reconstruction of total nasal defects.

A case in which a radial forearm osteocutaneous perforator flap was successfully transferred for one-stage reconstruction of total nasal loss is described. This thin flap consists of vascularized radial bone, superficial adiposal tissue, and no deep fascia. It is nourished by a single perforator of the radial artery and a cutaneous vein. The advantages of this flap are minimal donor-site morbidity, easy reconstruction for preservation of the radial arterial system, and no need for longer dissection through the radial artery. The donor defect can be repaired with a flow-through flap, such as an anterolateral thigh flap or a latissimus dorsi perforator flap.

Female↗
PubMed2002

An anatomic study and clinical applications of the reversed submental perforator-based island flap.

The authors present their experience with the reversed submental perforator-based island flap for nose reconstruction and their anatomic and clinical studies. There have been several descriptions on the reversed pattern of the submental flap, but its anatomic background and clinical availability are still questionable. The submental area was analyzed by anatomic dissection on four fresh cadavers that were injected with a barium mixture. The anatomic data were accumulated with the authors' clinical experience with eight patients treated with a submental island flap. On the basis of these studies, the location of reliable perforators was constant at the lateral and/or medial border of the anterior belly of the digastric muscle, but their locations were not always symmetric on both sides in the submental territory. Unlike the comitant submental vein, another larger superficial vein has a different course before reaching the lateral border of the anterior digastric belly, and therefore, it must be included in the reversed flap. The premised anatomic results and the clinical experience prove the reliability of the reversed submental perforator-based island flap as a versatile option in midface reconstruction, including the nose, once the dissection has been carefully done, respecting the anatomic points that can be found in this study.

Aged↗