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Biomedical subjects

I Tange

Publications and source records attributed to I Tange.

At least 19 recordsLinked to original sources

A peculiar malformation of the upper lip: report of six cases.

Six cases of a peculiar type of upper lip malformation have been observed by the author during the last 40 years. The malformations in this case series were remarkably similar, suggesting a single teratologic entity not been reported before. The six patients included 1-, 11-, 4-, and 6-month-old males, a 20 year-old male, and an 11-year-old female. Each was characterized by a crooked folded philtrum, a flat thin vermilion region of the upper lip, and high-positioned ala(e), that was unilateral or bilateral. The upper median incisors were separated occasionally by the thick lip frenulum without marked distortion of the nasomaxillary framework. The author speculates that these cases exhibited some disturbed penetration of the lateral nasal eminence (process) to the median part of the nasolabial region in their early embryologic development.

Adult↗

The lambda flap for secondary cleft lip repair.

OBJECTIVE: A modified Abbe flap of the lambda figure type, designed by the author and used before or after secondary cleft lip repair in 146 consecutive cases since 1990 is described. DESIGN: This series consisted of 71 cases with unilateral deformity and 75 cases with bilateral deformity at adolescent or adult ages. The technical details of this method and representative cases with the results are shown. The philtrum is created by incising the two branches of the lambda flap obliquely at 45 degrees to the skin surface in the lower lip, then matching them in the central recipient bed of the deficient upper lip. RESULTS AND CONCLUSIONS: The resultant upper lip is not only full and slack, but also attractive with an acute cubic contour of the philtrum. Furthermore, the residual scar at the donor site is concealed in the mentolabial fold.

Adolescent↗

MRI findings of the upper eyelid and their relationship with single- and double-eyelid formation.

Before the invention of magnetic resonance imaging (MRI), it was impossible to observe an architectural deformation of the eyelid because of its movement. The authors observed MRI films of 15 eyelids in both closed and opened positions and obtained new information on the architecture of the upper eyelid and also the mechanism of single and double eyelids, and sunken eye formation. (1) Orbital fat is transposed when the lid moves. If the fat can not return into the orbit when the lid opens, it droops and interferes with the fold formation of the lid. (2) The thickness of the eyelid skin is associated with double-eyelid formation. The skin fold is observed at the junction between thick skin with subcutaneous fat and thin skin without it. (3) We could not confirm Doxanas and Anderson's assertion that septal insertion was lower in Orientals. However, we observed pretarsally drooped or herniated orbital fat in many slit-eye Orientals. (4) There are three angles at the tarso-levato-aponeurotic line: one at the junction with transverse ligament, one at the point of septal insertion, and another at the aponeurotic terminal on the tarsus.

Adipose Tissue↗

Surgical correction of Stahl's ear using the cartilage turnover and rotation method.

Various operative methods for the correction of Stahl's ear exist. We, however, have devised an alternative "turnover and rotation" procedure. In this procedure, the deformed cartilage itself is used in its original contour to form a new scaphoid fossa, thus simplifying the corrective procedure and establishing a reliable operative method in which reversion to the original state is thought to be highly unlikely.

Adolescent↗

The influence of congestion and ischemia on survival of an experimental vascular pedicle island flap.

We investigated the relationship between the survival rate of experimental rat pedicle island flaps and mild vascular insufficiency, using a flap designed to induce constant distant necrosis. To eliminate individual variation, the vasculature of each flap was evaluated by injecting dye prior to ligating either or both of the pedicle vessels. Seventy-five male Wistar rats divided into four groups were used. Six of the rats died, so 69 rats were evaluated. Statistically, the dye distance of each group was the same. In the control group of 29 rats, survival length was directly proportional to dye distance. Although the mean values of the survival length minus the dye distance of each flap (delta S.L.) in the venous inadequacy group were not different from those of the control group, there was significant difference between the mean values of the arterial insufficiency and the venous inadequacy plus arterial insufficiency groups and those of the control group. In the pedicle island flap, mild venous inadequacy was less responsible for necrosis when the arterial inflow was sufficient. However, when the arterial inflow was impaired, even mild venous inadequacy affected flap survival.

Animals↗

Our method of correcting cryptotia.

Our technique for the correction of cryptotia using both Z-plasty and the advancement flap is described. The main advantages are the simple design of the skin incision and the possibility of its application to cryptotia other than severe cartilage deformity and extreme lack of skin.

Child↗

Operative experience with malfunction of the eyelid.

During the past 10 years, the authors have observed several cases of malfunction of the eyelids, such as congenital lid retraction, lagophthalmos accompanying facial nerve palsy, ocular myopathy, blepharochalasis, traumatic lid ptosis, and Horner's syndrome. Several operational techniques were utilized in these cases. Some operative cases are presented together with pre- and postoperative photographs. To obtain aesthetically pleasing results, the authors felt the most exacting techniques were necessary for even minor deformities.

Adolescent↗

The Abbe flap for unilateral cleft lip.

The modified Abbe flap procedure is indicated in secondary unilateral cleft lip in which the Cupid's bow and philtral complex of the cleft side have been destroyed as the result of previous faulty surgery. The Abbe flap is inserted in the center of the tight upper lip with or without prior scar revision, which may be done several months beforehand. The recipient pocket for the flap is made by dividing the upper lip into two parts at the line of the philtral ridge in the noncleft side and bringing the whole prolabial tissue with the residual lateral lip to the cleft side of the upper lip. The natural midline groove included in the lower lip flap is enhanced by a traction suture and simulates a philtral dimple with the split philtral ridges on both sides. Various other techniques are used to improve the final result.

Cicatrix↗