Publications by authors named "Yoshimoto Okada"

The corrosion rate of these alloys is observed to be the fastest immediately after implantation. In addition, bleeding can accelerate corrosion and cause treatment failure in vivo, and therefore, it is necessary to optimize the corrosion rate. The brushite (CaHPO・2HO) coating treatment, a type of calcium phosphate, is used as a method to optimize the corrosion rate of magnesium and is expected to have the same coating effect under hematoma as under non-hematoma conditions.

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Background: At present, there is no golden standard for treatment of extracranial arteriovenous malformations (AVMs) and recurrence remains a major challenge with limited available evidence on the associated factors. This study aimed to evaluate the effectiveness of surgical treatment options, in terms of size reduction, symptoms, and early recurrence in patients treated surgically for AVMs.

Methods: A retrospective cohort study was conducted to evaluate patients with AVMs following surgical treatment in 2 centers from 2005 to 2020.

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Cryptotia is a congenital ear deformity characterized by the upper helix buried under the skin of the temporal region. Recurrence and inadequate correction of ear position are major complications following auricle reconstruction. Abnormalities of the auricular muscles are closely associated with cryptotia and considered to be the main cause.

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Regeneration competent vertebrates such as newts and salamanders possess a weakened adaptive immune system characterized by multiple connections between the lymphatic system and the blood vascular system called lymphatic hearts. The role of lymphatic vasculature and these lymphaticovenous connections in regeneration is unknown. We used in-vivo near-infrared lymphangiography, ultra-high frequency ultrasonography, micro-CT lymphangiography, and histological serial section 3-dimentional computer reconstruction to evaluate the lymphatic territories of Cynops pyrrhogaster.

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Hideyo Noguchi is one of the most famous scientists in Japan's history, and his portrait has adorned the ¥1,000 banknotes since 2004. He had a childhood burn injury resulting in severe hand scarring and contracture that plagued his early life and education.The resulting hand deformity required 3 separate reconstructions with the third and most complex surgery performed by Professor Tsugishige Kondo just before Noguchi's final medical doctor license examination in 1897.

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Article Synopsis
  • * The study involved 4 cases of severely contaminated wounds, using a small volume of saline and a short dwelling time for effective healing.
  • * All grafts successfully healed without complications, suggesting NPWTi-d is a viable option for managing skin grafts in contaminated environments.
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Background: Reconstructive microsurgical free flap techniques are often the treatment of choice for a variety of complex tissue defects across multiple surgical specialties. However, the practice is underdeveloped in low- and middle-income countries. The aim of this systematic review was to evaluate the clinical application and outcomes of reconstructive microsurgery performed in Africa.

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Large cranial vault defects are challenging to manage due to the need to balance infection control, skin coverage, and restoration of the protective mechanical rigidity of the skull while also ensuring good head and neck aesthetic results. Conventional-staged treatment requires a long time period that includes debridement and scalp skin defect coverage with flaps as a first step, followed by definitive plate reconstruction 3-9 months later after infection control and flap atrophy resolution. We report a case of successful early cranioplasty in a factory worker who developed a large full-thickness cranial skull defect following artificial dura infection.

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  • A unique case is reported involving cold intolerance in a patient who had identical fingertip amputations on two fingers of the same hand.
  • The index finger was successfully replanted, while the middle finger underwent reconstruction using a free flow-through hypothenar perforator flap.
  • This surgical approach helped restore the digital arterial circulation and effectively addressed the issue of cold intolerance in the affected fingers.
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  • Pyoderma gangrenosum (PG) is a rare inflammatory skin condition that causes painful ulcers, primarily on the legs and trunk.
  • First-line treatments typically involve systemic corticosteroids for wound healing, but some cases respond well to tumor necrosis factor-α inhibitors like adalimumab and infliximab.
  • In a reported case, oral prednisolone and skin grafting were used for severe PG, and while mechanical debridement struggled to promote healing, a vacuum-assisted closure (VAC) system proved effective after PG activity stabilized.
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