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Biomedical subjects

Y Hirase

Publications and source records attributed to Y Hirase.

24 records · Page 2Linked to original sources
PubMed1990

Secondary reconstruction by temporoparietal free fascial flap for ring avulsion injury.

We report the secondary reconstruction of an amputated finger following a ring avulsion injury using a temporoparietal fascial flap (TPFF). There have been reports of preserving degloved fingers using a cross-finger flap and an abdominal flap, but it is difficult to obtain good results with these procedures. The TPFF is an ideal, thin flap that gives excellent results, preserving movement of the phalangeal joint.

Amputation, Traumatic↗
PubMed1988

Prefabricated sensate myocutaneous and osteomyocutaneous free flaps: an experimental model. Preliminary report.

Principles of neovascularization have been reported for the successful creation of a variety of muscle and bone free flaps. This study demonstrates a simple and effective technique for construction of prefabricated sensate myocutaneous and osteomyocutaneous free flaps in a rat model. These experiments were carried out in 20 Sprague-Dawley male rats. In half the animals, a sensate myocutaneous flap was constructed by sandwiching the superficial inferior epigastric vessels between a laterally based external abdominal oblique muscle flap and a laterally based skin flap served by an identified cutaneous nerve. A similar preparation included a piece of iliac crest bone. Two to three weeks later, now neovascularized by the sandwiched vessels, the flaps were harvested and transferred as free flaps with high reliability. An increased number of potential donor sites, the versatility of design, and the ability to customize flaps to the specific recipient-site needs are proffered.

Animals↗
PubMed1987

Customized prefabricated neovascularized free flaps.

Neovascularization of tissues into which a vascular pedicle has been implanted can result in the creation of a flap, or free flap, which is supported by those vessels as a neopedicle. This phenomenon allows the construction of customized prefabricated free flaps from tissue without restriction to naturally occurring vascular territories.

Animals↗
PubMed1985

Effective use of portions of the supernumerary digit to correct polydactyly of the thumb.

The purpose of surgery for polydactyly of the thumb is to ablate the supernumerary digit and to reconstruct a thumb with adequate function that approximates normal size and shape. A further aim is to prevent the occurrence of deformity in the future. To achieve these goals, one good thumb is reconstructed using portions from the supernumerary digit as follows: To increase the diameter of the reconstructed thumb, a skin flap is formed from the supernumerary digit. A portion of the joint from the supernumerary digit is used to correct joint deviation in the reconstructed thumb. The collateral ligament and abductor muscle are detached from the supernumerary digit with the bone fragment into which they are inserted, and transplanted together with the bone fragment into the reconstructed thumb. Osseous tissue to be used in open wedge osteotomy to correct longitudinal deviation is obtained from the phalanx of the supernumerary digit.

Child, Preschool↗