A prospective study of 12 patients（8 men and 4 women）who underwent artery-only replantation for subzone II complete fingertip amputation without venous anastomosis and external bleeding between 2010-2019. The mean patient age at surgery was 55 years old（range, 23-74）. Eleven of 12（92%）replanted fingertips survived. Venous congestion was present for a few days, but improved naturally in a week. The survival rates of subzone II complete fingertip amputation accompanied with external bleeding without venous anastomosis were 62-88%. The results of this prospective study were comparable to those of previous reports. The survival rate of subzone II complete fingertip artery-only replantation without venous anastomosis and external bleeding, including pin-prick, may be equivalent to that of replantation with vein reconstruction. The need for external bleeding remains unclear.

　Pilonidal sinus is caused by the insertion of body hair and it is common in the sacrum. There are many reports on the surgical techniques for pilonidal sinus. We selected a transposition flap for flattening of the cleft and employed this method in 18 cases over a period of 6 years. We investigated their epidemiological features and postoperative course. As a result, we found that many patients were male, young and obese, but there was no common occupation as in past reports. The recurrence rate was 9.1%, which was sufficiently low; therefore, this method was considered to be useful. On the other hand, there was a high rate of postoperative breakdown and methods to decrease this rate are needed in the future.

　Recently, NPWT has played an important role in wound healing, and several studies revealed its effectiveness in split-thickness skin grafting. In Japan, the effectiveness of split-thickness skin graft using NPWT has not been compared with that of standard bolster dressing; therefore, the aim of this study was to assess and compare its effectiveness for split-thickness skin grafting retrospectively.
　Between June 2010 and August 2016, 113 inpatients of Kanazawa Medical University whose wound required skin grafting after wound bed preparation using NPWT were recruited. The patients were divided into 2 groups. Skin grafts were dressed by NPWT in group I, and dressed by the standard method in group II. We reviewed and compared the subjects.
　Regarding the graft take rate, group II （96.6% take rate）had a significantly better rate than group I （81.8% take rate）（p < 0.05). There was no difference between the 2 groups in days until the first dressing change（p < 0.05). Although NPWT is effective for graft dressing, standard dressings resulted in a significantly better graft take rate. This may be due to excess exudate fluid.