摘要:

Meningoencephaloceles and meningoceles are projections of the meninges with or without cerebral tissue, respectively, through a cranial bony defect. Generally, meningoceles are soft and depressible, whereas meningoencephaloceles are solid and pulsatile. They can present through the calvarium or facial bones.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Recently the calvarium has become a popular site for harvesting bone grafts because of its low incidence of morbidity, its proximity to the operative site, and the decreased amount of resorption as a result of its membranous nature. However, information regarding the phenomenon of repair at the donor site itself remains lacking. This investigation was initiated in 40 adult white New Zealand rabbits as an experimental model to study the process of repair at the donor site and to examine the possible use of hydroxyapatite to reconstruct the residual donor site deformity. Our experimental protocol closely followed our clinical procedure for the harvesting of split calvarial bone grafts. Our conclusions in the rabbit model were: (1) each of the commonly used hemostatic agents (bone wax and gelfoam) inhibit osteoneogenesis to varying degrees, (2) hydroxyapatite shows promise in the reconstruction of the donor site defect, and (3) if the periosteum comes in direct contact the defect repairs itself.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

During an 8-year period, 131 multiple microvascular transplants were performed on 62 patients for upper extremity reconstruction of complex wounds. Patients were classified into two groups: In group I 35 patients received paired simultaneous transplantation of 70 flaps performed in 35 operations. Group II consisted of 27 patients who underwent reconstruction with 61 sequentially transferred flaps; each procedure consisted of a single transplant. No statistical differences in flap failure or complications were seen between groups, except that group I required emergency reexploration more frequently. Patients receiving sequential reconstruction required rehospitalization, leading to significantly elevated costs. In our experience, simultaneous multiple microvascular transplants, particularly in patients admitted with acute injuries, result in reduction of costs, total number of procedures, and duration of hospitalization without increased complications.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Representative sections of the capsules that envelop surgically implanted silicone were analyzed for their collagen content. The specimens were biopsied (as incidental procedures) as the opportunities arose. All four classes of capsules as codified clinically and those surrounding tissue expanders are represented. The ages of the capsules ranged from 6 weeks to 13 years.Eighteen specimens were examined by slab gel electrophoresis. Type I collagen predominated in all of the electrophoretic patterns. Type III collagen was consistently present in lesser concentrations. Type V collagen was consistently present as a small fraction. There was no evident correlation between the concentrations of the component collagens and the clinically assessed class of the capsules or of those from around tissue expanders, but there was a correlation to the age of the capsules. The electrophoretic patterns of the collagens of this study are indistinguishable from the (previously reported) analyses of (cutaneous) scar.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Congenital preauricular sinuses must not be considered trivial lesions. They can and should be differentiated from branchial cleft cysts. Cure is achieved only through complete excision of the sinus tract and its associated cysts. Total extirpation of the sinus tract is difficult in the presence of infection. The embryoanatomy and treatment of congenital preauricular sinus tracts as well as our experience with 6 patients are reported. We recommend excision of asymptomatic congenital preauricular sinus tracts.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

A rodent model was used to study tissue expansion. Three chemical agents—hyaluronidase, prostaglandin E2, and colchicine—were administered and their effects on tissue expansion studied. Hyaluronidase and colchicine both enhanced the rate of expansion when compared with results in control animals (p < 0.05). Although prostaglandin E2had less effect on expansion rate, it did significantly enhance tissue oxygen tension of expanded skin when compared with controls (p < 0.05). Clinical implications include the possibility of pretreating patients with these agents to increase the rate of expansion and to improve the safety of current methods of expansion.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

The facial position and balance of eyes, nose, and mouth in typical Japanese individuals were investigated, based on the golden proportion for each of these relationships. We found that Japanese tend to have a longer upper lip and shorter chin length compared with Caucasians. We believe that this tendency represents a general facial characteristic of the Oriental population.Each ratio obtained from determinations by our method was used for preoperative and postoperative aesthetic analysis in maxillofacial surgery. This method is considered useful because it permitted us to understand quantitatively the positional relationship and the balance of eyes, nose, and mouth in the face and to make comparisons with typical subjects.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Burn units and experienced burn nurses are valuable, expensive resources that are underutilized when the burn census is low. Burn facilities can be used to treat other conditions or injuries to provide optimum wound management or to provide overflow intensive care unit beds. We studied via a questionnaire survey the admission profiles of 120 burn units in the United States to determine frequency of utilization for nonburn injuries. One hundred sixteen burn units routinely treat nonburn injuries. Seventy-seven burn units also accept overflow patients from other critical care units. A significant amount of nonburn wound care is being provided by burn units in the United States, with potential benefit to both the patient and the burn unit. The implications of the use of burn facilities as “wound intensive care units” are discussed.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Plastic surgeons are not able to handpick every patient. They can only, in reality, screen, evaluate, and accept or reject those patients who appear in their practice. Thus, the patient population is already delimited by several demographical and socioeconomic factors. Lipoplasty specialists see a further smaller group within this defined subset of all surgical patients. The group seeking lipoplasty may contain a disproportionately large number of patients with self-concept disorders, whose obsessional emphasis on the physical component of self can present preoperative and postoperative problems to surgeons. This article is designed to help surgeons evaluate their patient population before surgery and to uncover problem or rather “special care” patients.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

The development of movable skin flaps appears to be a popular aspiration of contemporary plastic surgeons, although it seems to us that the classic skin flap, devised by pioneers a century ago, still remains worthy of application.

ISSN:0148-7043    

出版商:OVID    

年代:1989

数据来源: OVID