摘要:

Ten patients underwent upper eyelid blepharoplasty using the carbon dioxide laser on one eyelid and a conventional technique on the other. Administrative factors, safety considerations, ease of procedure, and short- and long-term results were evaluated. The carbon dioxide laser added considerable administrative, equipment, personnel, and organizational requirements to the procedure. The possibility of adverse safety factors or accidents was increased with the laser. Immediate and late postoperative results of pain, swelling, ecchymosis, and scarring were not significantly different on the two sides. No clear benefit other than a positive marketing factor could be demonstrated with use of the carbon dioxide laser for blepharoplasty.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

We have assessed the donor site of fibula bone graft to detect signs and symptoms of ankle instability in 8 patients. In 1 patient with generalized joint hyperlaxity pain, clinical instability and pathological motion of the proximal end of the distal remaining fibula were encountered. Seven other patients were asymptomatic and had no instability both clinically and on stress radiographs.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

In our cadaver dissection, the connection between the lateral calcaneal artery, the lateral tarsal artery, and the branch of the lateral plantar artery was corroborated, indicating possible reverse blood flow in the lateral calcaneal artery. The distally based lateral calcaneal flap has been successfully used in 2 patients. Vascular anatomy, indication, and technical points of the surgery as well as advantages and disadvantages of the flap are discussed.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

To study the effects of alteration of blood flow on wound healing in rabbit ear ulcers, two models were designed that produced maximum ischemia and maximum congestion, respectively, with complete survival of the ear by selective division of one or more of three arteries or veins and circumferential incisions. After selection of the best models from six variations, tissue perfusion was measured indirectly by venous oxygen tension, dermofluorometry, pulse oximetry, and skin temperature. Wound healing was measured seven days after creating 6-mm surgical ulcers. The tissue oxygen tension calculated from the venous oxygen tension fell to 30 mm Hg through days 1, 3, and 7 in the ischemic ears, and skin temperature and blood flow measured by dermofluorometry were similarly affected. However, there was no evidence of significant change in tissue perfusion except increased skin temperature in the congested ears. None of the ischemic wounds were epithelialized completely, but half of the control and congested wounds were. The granulation tissue formation was decreased (39% of the area versus 63% of the area) and the infection rate was increased (20% versus 2%) significantly in the ischemic wounds compared with the control wounds but not in the congested wounds. The ischemic ulcer model is reproducible and quantifiable and is potentially a useful model for examining agents to improve ulcer healing where blood flow is decreased. The congestion model showed no significant changes in blood flow or wound healing.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

This study investigated the electrophysiology of the denervated orbicularis oculi muscle and its clinical application. Orbicularis oculi muscle denervation was achieved by complete transection of the seventh nerve in ten dogs. The parameters studied were the electrical requirements needed to cause a minimal perceptible contraction (twitch) and a complete eyelid closure (blink). Twitch and blink curves were generated. The findings are summarized as follows: (1) Minimum intensities for direct twitch of denervated orbicularis oculi muscle were significantly lower than intensities of normal orbicularis oculi muscle twitch (p < 0.01) when long stimulus duration (5 to 400 ms) was used. (2) Minimum intensities for direct blink of denervated orbicularis oculi muscle were not significantly different from stimulus intensities for blink of normal orbicularis oculi muscle if long stimulus duration (5 to 400 ms) was used. Twitch and blink curves could be used to clinically follow the orbicularis oculi muscle movement return after operations performed in patients affected by lagophthalmos.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Autogenous rib cartilage and silicone rubber are materials currently used for ear reconstruction. Increased morbidity and operative time with rib cartilage grafts and a high rate of extrusion with silicone implants render them less than ideal for reconstruction of the human ear. The purpose of the current investigation is to determine the efficacy of porous polyethylene as an alternative synthetic material for ear reconstruction.Porous polyethylene and silicone rubber discs of equal sizes in two thicknesses were implanted in lieu of the cartilage in the external ear of eight baboons. Histological evaluation of the sites after nine weeks revealed excellent anchorage of the thin porous polyethylene implants (1.5 mm) in the surrounding tissues. Silicone rubber implants, however, were encapsulated in a thickened granulation tissue capsule. When thicker implants (3.0 mm) were used, exposure or extrusion occurred in all cases. Porous polyethylene implants demonstrated only partial exposure; half of the silicone rubber implants were extruded; and the other two silicone rubber implants were almost completely extruded. Porous polyethylene was thus better incorporated into the soft tissues than silicone rubber as long as the overlying soft tissues were not stressed by an oversized implant or inadequate soft tissue coverage.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Industrial injuries are often open wounds contaminated with grease. Commercial compounds used for removing grease from, intact skin are composed of petroleum distillates. These products are occasionally used to remove grease from open wounds. Using an animal model, this study examines the use of commercial compounds in open wounds in comparison with mild detergent and water. A clear correlation is established between their use and adverse tissue reaction. The use of soap and water as opposed to petroleum-based compounds is recommended for removal of grease from a wound.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

The effect of a calcium antagonist (nifedipine) on flap survival was examined. A flap measuring 15 mm wide × 70 mm long was designed on the central region of the back of rats. The base of the flap was located 20 mm cranial from the root of the tail in each rat. The effect of the drug was evaluated on the basis of the difference between the dye distance and survival length. It was found that nifedipine extended the survival length of the flap. There were no significant differences in increased survival length between nifedipine and intravenously administered prostaglandin E1. There was no dose-dependent change on the effect of nifedipine. Increased survival length was demonstrated even at its usual clinical dosage. It was anticipated that there is a possibility of clinical application of this drug.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

We report the reconstruction of the urethral fistula using a scrotal septocutaneous island flap. A scrotal septocutaneous island flap is supplied by vascular networks in the scrotal septum area from both perineal arteries and posterior scrotal arteries. This flap is divided into two flaps, one for urethral lining and the other for the skin defect. We found it to be a simple, useful, and reliable alternative to other local flaps. However, hairless skin of the scrotum must be used for the urethral lining. The musculocutaneous flap is also reliable. However, use of the scrotal septocutaneous island flap can save the musculocutaneous flap for secondary procedures.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

We treated tattoos with a new method in which the epidermis of the tattooed skin was replaced after removing the dermis, which contained tattoo pigments. The separation of the epidermis from the dermis was performed enzymatically with the use of dispase. The time required for healing of the wound was markedly shortened.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID