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Biomedical subjects

N Ohsumi

Publications and source records attributed to N Ohsumi.

16 recordsLinked to original sources
PubMed2001

Use of bilateral retroangular flaps for reconstruction of the glabella and nose.

We report the use of bilateral retroangular flaps for reconstruction of the glabella and nasal tip following extirpation of a cavernous haemangioma. The vascularity of the flaps was good, and the colour and texture match excellent. Donor-site closure was easy, and the scar in the nasolabial groove was not conspicuous. Our experience demonstrates that this flap is useful for reconstruction of skin defects of not only the nose but also the glabella and forehead. By raising bilateral flaps, a wide skin defect in the centre of the face can be repaired.

Adult↗
PubMed2000

The full-thickness retroangular flap.

In reconstruction of full-thickness nasal defects, excellent outcome from both the cosmetic and functional viewpoints is desired, and minimal scar in the flap donor site is favored. The authors describe a new reconstructive method in which full-thickness nasal defects are repaired with a full-thickness island flap collected from the nasolabial region, with the retrograde angular artery as the pedicle. The authors call this flap the full-thickness retroangular flap, and used it to repair full-thickness nasal defects generated by resection of cutaneous malignant tumors in 2 patients. The advantages of this method were the following: reconstruction of the external side of the nose and lining of the nasal cavity could be performed with one flap; the color and texture of the reconstructed nose were favorable; being an arterial flap, good blood circulation was obtained; and closing of the flap donor site was easy.

Aged↗
PubMed1999

Simple method of designing a bilobed flap.

In the present study, we devised a new method of designing bilobed flaps. This method makes the flap easy to draw and has the merits of diffusing the tension on the flap and minimizing the dog-ear. We used this flap in 16 patients with face and head skin defects and obtained good results.

Adolescent↗
PubMed1998

Reconstruction of nasal tip defects by dorsonasal V-Y advancement island flap.

The nasalis musculocutaneous sliding flap developed by Rybka and the myocutaneous axial flap with lateral pedicle reported by Martire and associates are extremely useful for reconstruction of the nasal tip and surrounding area, respectively. We have modified the method of Martire and associates into an operative procedure that can be easily employed. By confirming the blood flow of the lateral nasal artery preoperatively by Doppler probing, the lateral pedicle of the flap was made smaller to facilitate mobilization of the flap. Furthermore, this flap could be made into a reversed-flow flap when indicated.

Adolescent↗
PubMed1997

A trilobed flap for reconstruction of nasal skin defects.

We developed a trilobed flap, i.e., a Dufourmentel flap connected to two continuous triangular flaps whose angles are decreased by one-quarter. We used this type of flap in eight patients with nasal skin defects, sequelae of tumorectomy, and obtained good results.

Adult↗
PubMed1996

Correction of severe ear deformity due to a congenital earlobe defect.

This paper describes the reconstruction techniques I have developed to correct a congenital earlobe defect. My technique was employed in the correction of four auricles in two cases of ear deformity due to a congenital earlobe defect. The first case is a 3-year-old girl with a congenital bilateral earlobe defect, loss of the right superior crus of the antihelix, and a left protruding ear. The second case is a 52-year-old female with a congenital bilateral earlobe defect and bilateral protruding ears. The shape of each reconstructed auricle and earlobe was satisfactory.

Cartilage↗
PubMed1995

Ear reconstruction with chondrocutaneous postauricular island flap.

Skin and cartilage defects from the conchal cavity to the external auditory canal were reconstructed with the use of a chondrocutaneous postauricular island flap. Although based on the experience of only one case, the authors believe that this island flap is extremely useful in the repair of skin and cartilage defects of the conchal cavity and the external auditory canal.

Adolescent↗
PubMed1995

A new skin suture technique for multiple Z-plasty.

A new skin suture technique was developed for multiple Z-plasty. In this technique, the wound of multiple Z-plasty is closed by several continuous locking sutures. With use of this technique, the operative time is reduced, and suture removal is facilitated to alleviate pain and discomfort on the part of the patient.

Dermatologic Surgical Procedures↗
PubMed1994

Earlobe reconstruction with a reversed-flow chondrocutaneous postauricular flap and a local flap.

An earlobe reconstructive method using a reserved-flow chondrocutaneous flap and a local flap is described. Two patients are reported whose earlobes were reconstructed by this method. By this method, earlobes of bilateral symmetry can be produced without fail. The blood circulation of both flaps is satisfactory. Since conchal cartilage is used, an earlobe of satisfactory shape can be maintained for a long period, but the reconstructed earlobe is slightly firm when palpated.

Adult↗
PubMed1994

Free composite latissimus dorsi muscle-rib flap not containing the intercostal artery and vein for reconstruction of bone and soft-tissue defects.

Reconstruction of bone and soft-tissue defects of the forehead and leg was done with use of a free latissimus dorsi muscle-rib flap. By utilizing the curve characteristic of the rib and by filling the cavity with latissimus dorsi muscle, the forehead could be restored in a good shape. In our application of this flap to the leg, it is considered in retrospect that reconstruction with the use of two ribs should have been done. Furthermore, it was concluded that in comparison with the heretofore employed vascularized rib graft, the scope of operative invasion is small in the use of this flap with hardly any risk of thoracostomy.

Adolescent↗
PubMed1993

Use of a free conchal cartilage graft for closure of a palatal fistula: an experimental study and clinical application.

In order to establish an operative procedure for the closure of palatal fistulas, the usefulness of free conchal cartilage grafts was confirmed through animal experiments, and a clinical application of this procedure was attempted. In the animal experiment, an oronasal penetrating fistula 10 mm in diameter was formed in the hard palate of 33 rabbits. One month later, the size of the palatal fistula decreased to 2 to 3 mm in diameter in all the rabbits. These rabbits were divided into two groups. Group 1 (n = 8) was used as a control group. In group 2 (n = 25), the palatal fistula was closed by an autograft of conchal cartilage, and the conchal cartilage graft site was observed for a period of 16 weeks. In 75 percent (6 of 8) of group 1, the palatal fistula persisted even after 1 year, but in 96 percent (24 of 25) of group 2, the palatal fistula was closed. The palatal fistula closure procedure using a conchal cartilage graft was found to be remarkably effective (chi 2c = 10.9, p < 0.001). In the clinical application, a fistula closure procedure with the use of conchal cartilage grafts was attempted in 24 patients with palatal fistulas. The procedure was modified into three types according to the size of the palatal fistula. For type I (diameter less than 2 mm) a conchal cartilage graft was created as in the animal experiment. For type II (2 to 5 mm in diameter), a palatal fistula closure procedure was used employing both a small hinge flap and a conchal cartilage graft.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1990

Heel and foot reconstruction using reverse-flow posterior tibial flap.

Island flaps supplied by the intermuscular cutaneous perforator (IMCP) from a deep vessel, such as the peroneal flap pedicled by IMCP from the peroneal vessel or the anterior tibial flap supplied by IMCP from the anterior tibial vessel, are reported to be useful in reconstructive procedures for soft-tissue defects of the lower leg. However, the posterior tibial flap, pedicled by IMCP from the posterior tibial vessel, has not yet been fully described. The posterior tibial flap can be used either as a normal-flow or as a reverse-flow flap. It is particularly versatile as a reverse-flow flap for reconstruction of soft-tissue defects of the heel and foot. Three reverse-flow posterior tibial flaps were clinically applied, without venous anastomosis, to reconstruct heel and foot defects, and all three survived completely. The operative procedure and its characteristics are described.

Aged↗
PubMedDate not supplied

Reconstruction of scalp defects using simple designed bilobed flap.

We have devised a novel rational method to design a bilobed flap. In our method, two triangle flaps are designed; the angle of the first flap is three-fourths the angle of a rhombus at the defect site, and the angle of the second flap is also three-fourths that of the first flap. We have successfully performed reconstruction of scalp defects as large as 50 x 45 mm using simple designed bilobed flaps. The location of the defect was the parietal region in 10 cases, the frontal region in 6 cases, the temporal region in 3 cases, and the occipital region in one case. The advantages of this method for use in reconstruction of scalp defects are as follows: (1) the dispersion tension on the flap provides stable circulation and prevents expansion of scar formation; (2) since the suture line is zigzag, alopecia at the suture line can be hidden under the hair; (3) since this flap is a random pattern flap using galea aponeurotica with blood flow to the skin, flap design is possible for any part of the scalp; and (4) design and elevation of this flap are easy and do not take much time.

Adolescent↗
PubMedDate not supplied

Repair of full thickness defect of the nose using an expanded forehead flap and a glabellar flap.

We describe a method to repair full thickness defects of the nose using a glabellar flap as the lining of the nasal cavity and an expanded forehead flap for external closure. We consider our method useful in the reconstruction of a nose with a full thickness defect for which the flap donor site is limited. The patient was a 45-year-old man who underwent resection of a basal cell carcinoma located over the dorsum of the nose which was associated with a hemangioma simplex on the face. As a result, about two-thirds of the nose, from the dorsum to the tip, as well as a part of the right cheek became deficient and the right nasal cavity became exposed. The nose was reconstructed using the above-mentioned method. The result was satisfactory both cosmetically and functionally.

Basal Cell Carcinoma↗