摘要:

The records of 487 patients undergoing abdominoplasty combined with closed liposuction of flap and flanks were reviewed regarding complications, revisions, and certain risk factors related to flap necrosis. Six patients developed general nonfatal complications including 1 deep phlebitis and 1 pulmonary embolism. Thirty-nine local complications occurred including 24 cases of flap necrosis, 4 hematomas, 2 dehiscences, 1 abdominal perforation, 1 infection, and 5 cases of seroma. Wide undermining and the “opposite T” incision emerged as significant risk factors related to flap necrosis. Neither the suction procedure nor obesity nor age had significant influence on the slough incidence. Although the present study does not include controls, liposuction does not appear to represent any significant additional risk when performed in connection with abdominoplasty.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

This preliminary report reviews a series of 70 patients treated with tunable-dye laser therapy for congenital capillary malformations (port-wine stains). Results were reviewed according to age and ethnic group of patients and color and anatomical location of malformations. Red birthmarks were most responsive to treatment in all age groups in all anatomical locations. Purple birthmarks were generally less responsive to laser treatment except in children, who responded well. Scarring and hypopigmentation were minimal (5.7% and 1 %, respectively), even in nonwhite patients. Recommendations emerging from this study include testing of infants, as results may vary. Detrimental side effects are rare. A major goal in treating port-wine stains is to avoid both the progression of these lesions through life and the psychological complications that occur during early socialization years in childhood. Pulsed-dye laser treatment offers much promise in these areas.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

This study was undertaken in an initial effort to characterize the immunology of extremity transplantation by examining the pattern and kinetics of leukocyte migration from rat limb transplants. Migration of donor leukocytes was evaluated by examining recipient lymphoid tissues with a donor-specific, anti—major histocompatibility complex, class I monoclonal antibody. Double-antibody, two-color labeling was used to localize donor cells to specific regions within these tissues. Donor leukocytes, with dendritic cell morphology, were found in the T-cell-rich areas of lymph nodes draining the allograft and spleen. The donor cells were present on postoperative days 1 through 3 but were not present on days 5 to 7. Donor leukocytes were not present in distant lymph nodes or liver. These findings indicate a migration of leukocytes, most likely the highly immunogenic dendritic cell, from rat limb transplants to the draining lymphoid tissues. Migration occurs shortly after transplantation and may lead to the sensitization of alloreactive T-cells.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

The paralytic lagophthalmos following palpebral nerve neurotmesis and consequent peripheral denervation of the orbicularis oculi muscle is often associated with harmful effects on the exposed cornea. This study investigated how daily electrical stimulation affects the blink reflex recovery of this muscle after its reinnervation. Six dogs underwent unilateral facial nerve neurotmesis with immediate epineurial repair of the palpebral nerve. Three dogs were randomly chosen to receive electrical stimulation of the reinnervated orbicularis oculi muscles for 75 days. The remaining 3 dogs were controls (nonstimulated muscles). During the study, the reinnervated orbicularis oculi muscle electrophysiology and blink reflex recovery were investigated. The Student's t test was used for statistical analysis. The results can be summarized as follows: (1) between 30 and 50 days, the minimum mean stimulus intensities evoking complete upper palpebral closure of the stimulated muscles were significantly lower than those of the nonstimulated muscles (p < 0.01) and (2) the stimulated muscles recovered complete closure of the interpalpebral fissure (blink reflex) at 49.6 days, significantly earlier (p < 0.01) than the nonstimulated muscles (72.6 days). It is concluded that daily electrical stimulation of the orbicularis oculi muscles, if started immediately after epineurial repair of the palpebral nerve neurotmesis, promotes a faster blink reflex recovery in the dog model.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

As the use of rigid internal fixation of the facial skeleton has become routine in adults, many craniofacial surgeons have expanded its use to the pediatric population. The effects of miniplate and screw fixation on subsequent craniofacial growth, however, have not been examined. Using 6-week-old rabbits as an experimental model, miniplates were placed across the right coronal suture. Calvarial changes were measured by direct osteometry on dry skull preparations. Compared with the control group, a significant reduction in growth was noted across the plated suture and adjacent bones. Because secondary growth disturbances can be produced with the use of these fixation devices, their use in the pediatric population should be viewed cautiously.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

A study was conducted to compare the regeneration of rat peroneal nerves across 0.5-cm gaps repaired with artificial nerve grafts versus sutured autografts. The artificial nerve graft model is composed of a synthetic biodegradable passive conduit made of polyglycolic acid filled with a collagen extracellular matrix (predominately Type I collagen, derived from calf skin, and with the telopeptide ends left intact). Axonal regeneration was studied in 22 long-term animals (11 or 12 months). The nerves were studied by qualitative and quantitative histological and electrophysiological methods, and by functional analysis in 9 of the animals. The axonal regeneration of the artificial nerve graft is equal to sutured autografts as measured by axonal counts, and by physiological and functional methods, although the sutured autografts demonstrated statistically superior axonal diameters.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

External rhinoplasty is a valuable tool in the surgical armamentarium of all nasal surgeons. It does not change the dynamics of the operation but offers a new method of exposure. The purpose of this paper is to present our experience with the external rhinoplasty technique in 601 patients, and review the results and complications of this approach to nasal surgery. Two patient reports are presented to demonstrate use of the technique in nasal surgery.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Thirty-four women who had undergone breast reconstruction after mastectomy for breast cancer were evaluated as to their emotional and psychosocial adjustment. Standardized psychological tests and a self-report questionnaire were used, along with the surgeon's evaluation of the aesthetic success of the reconstruction. Two psychodiagnostic tests were found to be of use in identifying maladjusted women who do not gain optimal benefit from the reconstruction: a questionnaire that evaluates the level of depression (Beck) and another that assesses the level of optimism (Cantrill). No correlation was observed between the surgeon's evaluation of the reconstruction's aesthetic success and the women's satisfaction. It was found that there are two groups of emotional-high-risk women: single women and women receiving adjuvant therapy. It is suggested that emotional-high-risk patients be given psychological support concerning the importance of the mastectomy and their reaction to breast reconstruction.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

We describe the teres major as a muscle flap. The results of anatomical and radiographic studies demonstrate the surgical anatomy. The details of 4 clinical cases illustrate its application in breast reconstruction. The teres major flap offers advantages over previously described muscle flaps in selected cases of breast and chest contour reconstruction.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Increased efficiency in using the lag screw principle for rigid fixation of bone, particularly for fragile cortical or soft cancellous grafts, is facilitated by dispersion of screw head compression forces with a biocompatible metallic washer. Although none is commercially available, such washers may be quickly fashioned from the residua of any adaptation miniplate in quantities as required.

ISSN:0148-7043    

出版商:OVID    

年代:1990

数据来源: OVID