Prolonged hand-transmitted vibration exposure in the workplace has been recognized for almost a century to cause neurodegenerative and vasospastic disease. Persistence of the diseased state for years after cessation of tool use is of grave concern. To understand persistence of vibration injury, the present study examined recovery of nerve conduction velocity and structural damage of myelinated axons in a rat tail vibration model. Both 7 and 14 days of vibration (4 h/day) decreased conduction velocity. The decrease correlated directly with the increased percentage of disrupted myelinated axons. The total number of myelinated axons was unchanged. During 2 months of recovery, conduction velocity returned to control level after 7-day vibration but remained decreased after 14-day vibration. The rat tail model provides insight into understanding the persistence of neural deficits in hand-arm vibration syndrome.
Breast reduction remains a basic plastic surgery procedure designed to alleviate upper torso complaints resulting from macromastia. Historically, the inverted-T inferior pedicle procedure was the dominant technique for the treatment of macromastia for 40 years. The past two decades have seen a reexamination of breast reduction technique in an attempt to improve on the results and minimize complications. As a result, a new genre of procedures based on different pedicles and short-scar skin management techniques has been introduced. With these new procedures, the plastic surgeon now has a variety of different techniques that can be offered for reducing the hypertrophic breast. Strategically applying the concepts inherent in these procedures to the correct patient can provide outstanding results with few complications. In this article, the concepts and results of these various procedures are discussed to give the reader a basic understanding of the options available for breast reduction.
A 47-year-old female with a locally advanced urologic malignancy previously managed with resection, diversion, and postoperative radiation therapy presented for management of her recurrent cancer that had eroded through the soft tissues of the left inner thigh and vulva. On all staging studies the tumor involved the left common femoral artery, and vein, both above and below the inguinal ligament. The difficulty with such tumors is the availability of tissue to reconstruct the defect. The patient had a history of deep venous thrombosis in the femoral venous system. A local flap was the most logical type of reconstruction. The patient had a right lower quadrant ureterostomy with a large parastomal hernia which further limited the local flap options. An anterolateral thigh flap from the opposite thigh was used to reconstruct the soft tissue deficit in this patient. This resurfaced the defect and provided coverage for the vascular reconstruction.
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