Abstract:
:Three patients requested explantation of their saline-filled breast implants. Bilateral calcification had occurred in all six implants. Four of the implants were manufactured by McGhan Corporation (Santa Barbara, Calif.), and two, by the Simaplast Company (Toulon, France). All implants had been inserted in the subglandular plane and had been in place for 7 to 23 years. At the time of explantation, patients were 32, 34, and 44 years old. Calcification on the surface of the implants and capsules was analyzed. Implant surface calcification was clinically evident on all six implants, appearing as ivory-colored, tenaciously adherent deposits, only on the anterior surface of the implant. Capsular calcification, which was observed only microscopically, was characterized by poorly organized, irregularly shaped, calcified agglomerates; this calcification also occurred only on the anterior surface of the capsule, adjacent to the area of calcification on the implant. Ultrastructural analysis of scrapings from the implant surface showed large, electron-dense aggregates of crystals, with individual crystals measuring approximately 40 x 10 x 10 nm. In contrast, capsular calcification was characterized by two patterns of deposition, spherulitic aggregates of needle-shaped crystals and areas of metaplastic bone. The individual crystals were approximately 40 x 10 x 10 nm. Energy-dispersive x-ray spectroscopy of specimens from the areas of calcification on the implant and capsule surfaces demonstrated calcium and phosphorus. Electron diffraction of crystals from the implant and capsule surfaces demonstrated the D-spacings characteristic of calcium apatite. There were many differences between the calcification properties of these six saline implants and those of silicone gel implants. For example, mineralization has not been observed on the surface of gel implants, but in these saline implants it occurred primarily on the implant surface. Also, capsular calcification has been observed clinically in gel implants across the surface of the capsule (except at the site of attachment of a Dacron patch), but in this study it was observed only microscopically and was located on the anterior surface of the capsule, adjacent to the area of calcification on the implant. In addition, crystals 100 times larger than those observed on the six saline implant capsules have been observed on the surface of gel implant capsules. A model is presented to explain the mechanism of calcification associated with breast implants and to explain the observed differences between saline-filled and gel-filled implants.
journal_name
Plast Reconstr Surgjournal_title
Plastic and reconstructive surgeryauthors
Peters W,Smith D,Lugowski S,Pritzker K,Holmyard Ddoi
10.1097/00006534-200102000-00010subject
Has Abstractpub_date
2001-02-01 00:00:00pages
356-63issue
2eissn
0032-1052issn
1529-4242journal_volume
107pub_type
杂志文章abstract:BACKGROUND:The pharyngeal flap is one of the oldest and most popular techniques for correction of velopharyngeal insufficiency. The authors describe a large series using a technique that combines a pharyngeal flap with a palate pushback to avoid common causes of operative failure while restoring the velopharyngeal mech...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000005645
更新日期:2019-06-01 00:00:00
abstract:BACKGROUND:This study aims to assess the health-related quality-of-life benefit following auricular reconstruction using autologous costal cartilage in children. In addition, key aspects of the surgical reconstruction are assessed. METHODS:After auricular reconstruction, patients completed two questionnaires. The firs...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0b013e3182402ca7
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Lateral epicondylitis is a common overuse injury affecting approximately 1 to 3 percent of the population. Although symptoms may disappear spontaneously within 1 year, the clinical guidelines for conservative treatment are not clear. The authors' objective was to examine the outcomes of nonsurgical treatment...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000007440
更新日期:2021-01-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to investigate the incidence of symptomatic and asymptomatic deep venous thrombosis in patients undergoing harvest of a free flap from the lower extremity who were receiving standard chemoprophylaxis while hospitalized. METHODS:A retrospective review of 65 consecutive patients ...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000002399
更新日期:2016-08-01 00:00:00
abstract:UNLABELLED:Biplanar oncoplastic surgery represents a novel technique with which to address partial breast reconstruction defects in small to medium sized breasts. Traditional oncoplastic volume displacement techniques may correct contour irregularities but do not address volumetric asymmetries. Volume replacement techn...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0b013e3182a3bf47
更新日期:2013-11-01 00:00:00
abstract::Relationships between physicians and industry, whether it be pharmaceutical companies, medical device manufacturers, or purveyors of medical technology, contain both an element of potential for good and a potential for harm. Certainly, the potential for good is realized when the collaboration results in improved plast...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000000788
更新日期:2015-04-01 00:00:00
abstract:BACKGROUND:Various operative approaches exist for treatment of trapeziometacarpal joint osteoarthritis. The aim of this study was to compare the results of Lundborg resection arthroplasty with solely autologous fat injection. METHODS:Twenty-one patients with symptomatic osteoarthritis of the trapeziometacarpal joint (...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000003913
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:The reconstruction of the philtrum during unilateral cleft lip repair remains a surgical challenge. The authors introduce a modified surgical technique for the reconstruction of the philtrum that allows for both the deepening of the philtral dimple and augmentation of the philtral ridge. METHODS:Between Jan...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000001795
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:When replantation of an avulsed/amputated thumb is not feasible, toe-to-hand transfer may be considered as a reconstructive option in appropriately chosen patients. Although selection criteria are purposefully restrictive, immediate one-stage transfer, as opposed to a delayed procedure, provides many advanta...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0b013e3181934715
更新日期:2009-01-01 00:00:00
abstract::Full-thickness cranial (membranous) and split-thickness iliac crest (endochondral) onlay bone grafts were placed subperiosteally without fixation onto the snout (membranous) and tibia (endochondral) in 30 rats. The animals had been divided into three equal groups in which the bone grafts had been demineralized, autocl...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199106000-00013
更新日期:1991-06-01 00:00:00
abstract:BACKGROUND:Theories regarding the cause of craniosynostosis that are more than 15 years old cite the role that tensional forces play in the normal and abnormal development of the cranial suture. These theories highlight the effect of stress bands originating from the skull base to the vertex, guiding sutural developmen...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/01.prs.0000270284.69632.6b
更新日期:2007-09-01 00:00:00
abstract:BACKGROUND:Although maxillary distraction osteogenesis has been used for early treatment of midfacial hypoplasia, the inevitable osteotomies are still a complicated and invasive procedure for growing patients. Based on the bone-borne trans-sutural distraction osteogenesis, novel improvements to the approach were made t...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000001375
更新日期:2015-07-01 00:00:00
abstract:BACKGROUND:The psychological aspects of cosmetic breast augmentation have been the focus of a great deal of empiric study over the past 40 years. METHODS:Studies investigating the preoperative characteristics and psychosocial status of women interested in breast augmentation are reviewed. Investigations of postoperati...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章,评审
doi:10.1097/01.prs.0000286591.05612.72
更新日期:2007-12-01 00:00:00
abstract::Previous investigations have demonstrated the superior strength and toughness of the MGH four-strand tendon repair technique and shown that it neither weakens during maximum tendon softening nor interferes with healing in an in vivo rabbit model. In the current study, the biomechanical performance of the modified Beck...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:
更新日期:1997-05-01 00:00:00
abstract:BACKGROUND:Indocyanine green angiography has gained popularity in breast reconstruction for its ability to assess mastectomy skin and tissue flap viability. The authors aim to analyze trends and outcomes associated with indocyanine green angiography use in breast reconstruction. METHODS:Using 2012 to 2014 data from th...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000004195
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND:The authors performed a comprehensive literature review regarding functional impairment after latissimus dorsi muscle transfer, to investigate functional changes in the donor site and the potential impact on patients' daily lives. METHODS:The PubMed database was searched for articles regarding functional do...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章,评审
doi:10.1097/PRS.0000000000000365
更新日期:2014-08-01 00:00:00
abstract::Success of argon laser therapy as a therapeutic modality for port wine stains has been correlated with the degree of vascular congestion within the lesions. Epinephrine causes vasoconstriction and erythrocyte stasis within normally innervated vessels. We tested the hypothesis that subcutaneous injection of epinephrine...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-198712000-00004
更新日期:1987-12-01 00:00:00
abstract:BACKGROUND:There continues to be controversy about performing abdominoplasty concurrently with abdominal liposuction. The concern is that liposuction on the already vascularly compromised abdominal flap will lead to increased complications and flap necrosis. The central abdomen is supplied by the epigastric system. If ...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000001200
更新日期:2015-05-01 00:00:00
abstract::Following breast augmentation, 100 patients with inflatable saline implants were followed for a period of 6 months to 8 1/2 years. Capsular contracture rate, Baker II or greater, was 3.4 percent. This low rate of capsular contracture is attributed to early manipulation of the implant. The deflation rate was also 3.4 p...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-198605000-00014
更新日期:1986-05-01 00:00:00
abstract:BACKGROUND:Recent publications have implicated computed tomographic scans in the genesis of cancer and developmental delay. To determine whether the imaging protocols used in the authors' craniofacial practice could be harmful, they reviewed patient radiation exposure data for 77 patients. They then reviewed the litera...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0b013e3181b59d2d
更新日期:2009-10-01 00:00:00
abstract::Our experience with the use of cartilage grafts in 430 primary rhinoplasties is presented. We find grafts indicated when operating on small noses with thick skin to increase and define the dorsum, to add projection and angularity to the tip, to project the columella, and to correct the acute nasolabial angle. The proc...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-198105000-00003
更新日期:1981-05-01 00:00:00
abstract::Active mobilization of repaired flexor tendons requires sufficient suture strength. This study was designed to investigate the suitability of four newly developed and comparatively strong tendon sutures for flexor tendon repair with active digital mobilization. Fifty fresh flexor digitorum profundus tendons were rando...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-200103000-00014
更新日期:2001-03-01 00:00:00
abstract::Three groups of dogs were studied to compare the bone formation obtained with traditional bone grafting techniques, and that obtained with revascularized periosteum or revascularized bone grafts--all in unstressed bone. Revascularized periosteum did not produce a significant amount of bone in this unstressed model. At...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-197909000-00013
更新日期:1979-09-01 00:00:00
abstract::After a very cautious dissection, the crossing of cartilages is going to produce a "spring effect" which, in pushing them to the right position, will consequently correct the pinch. This is a simple procedure, indicated only for nose tips or, if associated with other techniques, to correct secondary rhinoplasty patien...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:
更新日期:1989-10-01 00:00:00
abstract:BACKGROUND:Enhanced recovery after surgery (ERAS) protocols have known benefits in the inpatient setting, but little is known about their impact in the subsequent outpatient setting. On discharge, multimodal analgesia has been discontinued, nerve blocks and pain pumps have worn off, and patients enter a substantially d...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000006546
更新日期:2020-03-01 00:00:00
abstract::Injectable bovine collagen has proven to be safe and effective for the treatment of contour defects for more than 20 years. After intradermal exposure to bovine collagen, the most commonly reported side effect is hypersensitivity (incidence of approximately 3 percent to test and approximately 1 to 2 percent to subsequ...
journal_title:Plastic and reconstructive surgery
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/01.prs.0000105649.69434.ef
更新日期:2004-03-01 00:00:00
abstract::Five patients with segmental tibial defects whose contralateral fibula could not be used as a donor were treated with ipsilateral island fibular transfer in an antegrade or retrograde fashion. Antegrade-flow pedicled flaps based on the peroneal vessel as in the conventional free flap were used for the proximal or midd...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199802000-00017
更新日期:1998-02-01 00:00:00
abstract::The cutaneous arterial circulation of the face and scalp was investigated by using multiple anatomic techniques in fresh cadaver specimens. Selective ink injections, dissection and measurement of latex-hardened perforators, and radiographic examination of transverse sections of barium-injected specimens defined 11 vas...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::The authors report their experience using skin expanders in 11 patients with severe bed sores. The expanders, with different volumes, from 250 to 1000 cc, were generally overfilled using the cutaneous tonometer. In fact, with the information revealed by this apparatus on the skin in expansion, the authors were able to...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199103000-00018
更新日期:1991-03-01 00:00:00
abstract:BACKGROUND:Recent studies have demonstrated low levels of National Institutes of Health funding for surgical research. The authors compared the funding in plastic surgery with the funding for other surgical specialties. METHODS:A query of National Institutes of Health grants awarded to departments of surgical specialt...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000003866
更新日期:2017-12-01 00:00:00