Abstract:
:In a previous study in the rabbit, the authors defined the macroscopic growth alterations after unilateral partial facial paralysis. Dry skull measurements revealed a reduced premaxillary, maxillary, mandibular, and anterior corpus length with a simultaneous increase in mandibular ramal height on the paralyzed side. The authors hypothesize that these mandibular growth alterations are, among others, caused by alterations in condylar growth activity and that an altered occlusal relationship may be involved in the adaptive condylar growth response after facial paralysis.A total of 84 New Zealand White rabbits were used for this study. The animals were randomly assigned to either a control group that was not operated on (n = 28), a group that underwent a sham-operation (n = 28), or an experimental group (n = 28). In the sham-operation group, the facial nerve was dissected as in the experimental group but was left intact. In the experimental group, a left-side partial facial paralysis involving the midfacial muscles was induced by an operation at the age of 12 days. After different follow-up time intervals of 3.5, 7, 14, 21, 28, 42, and 56 days, four control, four sham-operation, and four experimental animals (all randomly selected) were killed for histomorphometric measurements of the left control and sham condyles and the left-side and right-side experimental condyles. No significant differences between the control and sham-operation groups were found. The other results revealed that shortly after the paralysis in the experimental group, as compared with the controls, a decrease in condylar growth activity was seen before a catch-up increase in activity, as expressed by the time-sequenced decrease and increase in the height of the functional and hypertrophic chondroblast layer. The response on the right side was analogous, though less intense. It is suggested that the mandibular ramal growth alterations might be the result of a chain of adaptations involving the lateral pterygoid muscle and the condylar growth activity. The unilaterally restricted length increment of the maxillary snout, as a result of the loss of tensile forces caused by paralysis of the midfacial musculature, necessitated an adaptation in the position of the mandible to maintain a normal occlusal relationship. Subsequently, the function of muscles involved or influenced by an altered mandibular position, such as the lateral pterygoid muscle, were changed. These altered muscle activities induced condylar growth adaptations, which in turn explained the alterations in mandibular ramal growth.
journal_name
Plast Reconstr Surgjournal_title
Plastic and reconstructive surgeryauthors
Sinsel NK,Opdebeeck H,Guelinckx PJdoi
10.1097/00006534-200201000-00028subject
Has Abstractpub_date
2002-01-01 00:00:00pages
181-9issue
1eissn
0032-1052issn
1529-4242journal_volume
109pub_type
杂志文章abstract:BACKGROUND:Augmentation of the zygomatic body enhances appearance and provides a more youthful look. Porous hydroxyapatite granules offer an alternative to alloplastic implants. METHODS:Hydroxyapatite granules were placed by means of a transconjunctival approach into subperiosteal malar pockets (n = 8). From the preop...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/01.prs.0000218867.26061.21
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND:Immediate reconstruction of composite head and neck defects using free tissue transfer is an accepted treatment standard. There remains, however, ongoing debate on whether the costs associated with this reconstructive approach merit its selection, especially considering poor patient prognoses and the high co...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/01.prs.0000260591.82762.b5
更新日期:2007-06-01 00:00:00
abstract::A new use is described for the CO2 laser--that of deepithelialization. Deepithelialization is a technique used in a myriad of plastic surgical procedures. This paper introduces the use of the laser for deepithelialization and illustrates its advantages in 44 consecutive patients undergoing reduction mammaplasty. Advan...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-198705000-00013
更新日期:1987-05-01 00:00:00
abstract:BACKGROUND:Prepectoral breast reconstruction following mastectomy has become a more widely performed technique in recent years because of its numerous benefits for women. These include full pectoralis muscle preservation, reduced loss of strength, reduced pain, and elimination of animation deformity. As with any breast...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000005140
更新日期:2019-01-01 00:00:00
abstract::Lateral canthoplasty is a useful method to restore eyelid function and to protect the ocular surfaces. The success of the procedure depends on the proper analysis of periorbital anatomy as it relates to the specific indication for lateral canthoplasty. We report the experience with 1565 lateral canthoplasties with emp...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199711000-00003
更新日期:1997-11-01 00:00:00
abstract::Two cases of alopecia due to radiation of the scalp are presented in which it has been possible to achieve a technically and cosmetically satisfactory reconstruction by punch hair grafting. This does not mean that every case is suitable, but it does mean that those without contraindications should at least be given a ...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-198310000-00005
更新日期:1983-10-01 00:00:00
abstract::Craniosynostosis is characterized by premature fusion of the cranial sutures. At the molecular level, mutations in homeobox genes, transcription factors, and growth factor receptors have been implicated in the pathogenesis of this disorder, but the specific etiologic pathways have not yet been elucidated. To further s...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-200208000-00023
更新日期:2002-08-01 00:00:00
abstract::Sex reassignment surgery has proved to be the best resolution for primary transsexuals. In 1980, Dr. Rubin stated that preservation of the glans to reconstruct the clitoris in male-to-female sex reassignment surgery gave good cosmetic and functional results. In his series, Rubin used the corpus spongiosum as the vascu...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::Multiple-segment osteotomy is defined as an osteotomy that divides the tooth-bearing arch of the maxilla or mandible into three or more segments. Combining large-segment orthognathic surgery and unitooth or small-segment surgery is an effective approach for dealing with a wide range of dentofacial deformities with occ...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199908000-00009
更新日期:1999-08-01 00:00:00
abstract::A technique is described for reinforcing and sealing a microvascular anastomosis by using a detached vessel segment as a cuff around the anastomosis. This may allow fewer microvascular sutures to be used. This would allow a simpler, less traumatic, and more rapid repair and may allow "more vessels to be repaired by mo...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199103000-00029
更新日期:1991-03-01 00:00:00
abstract::A clinical dose of dextran 70 had significant antithrombotic effects in small, severely traumatized veins, and the effect was enhanced by the addition of low-molecular-weight heparin. These effects were achieved without bleeding problems in this model. ...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199408000-00021
更新日期:1994-08-01 00:00:00
abstract:BACKGROUND:The use of a porous high-density polyethylene implant for ear reconstruction is gradually gaining acceptance because it allows for a pleasing ear reconstruction in young children before they enter school. In response to this growing interest, the authors decided to write an article clarifying in detail all t...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000004088
更新日期:2018-02-01 00:00:00
abstract::Von Willebrand's disease, a common hereditary bleeding disorder, may be responsible for undue or unanticipated intraoperative or postoperative hemorrhage. The diagnosis may be difficult to establish, although it may be suspected clinically and can usually be confirmed by adequate laboratory investigation. Patients wit...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-197609000-00018
更新日期:1976-09-01 00:00:00
abstract:BACKGROUND:This study was proposed to evaluate the facial contour and electrophysiologic changes of the masseter and temporalis muscles before and after botulinum toxin A injection in the wide lower face (square face). METHODS:The botulinum toxin A injections were performed on 10 patients for the treatment of square f...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/01.prs.0000271068.71399.ae
更新日期:2007-09-01 00:00:00
abstract::To examine the effects of single-dose dexamethasone use on edema, ecchymosis, and intraoperative bleeding in rhinoplasty, a double-blind, randomized trial with placebo control was planned. A total of 55 consecutive patients were included in the study. The dexamethasone (10 mg) was given intravenously just before surge...
journal_title:Plastic and reconstructive surgery
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00006534-199912000-00041
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Stable reduction of fractures of the zygomatic complex is essential to avoid long-term aesthetic, sensory, and ocular consequences. Delayed collapse or relapse after reduction of fractures of the zygomatic complex is attributed to muscle forces, when there has been no additional trauma. A number of studies h...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/01.prs.0000239565.82612.56
更新日期:2007-02-01 00:00:00
abstract::A free medialis pedis flap was used to repair skin defects of the fingers and hand in five patients, the flap sizes ranging from 2 x 3 cm to 5 x 10 cm. Four flaps survived completely, but the largest flap turned necrotic along the dorsal margin, which is thought to have resulted from an incorrect flap alignment. A fre...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199501000-00016
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND:In aesthetic rhinoplasty, the described ideal nasolabial angle ranges from 90 to 120 degrees, with variable anthropologic differences. The authors sought to verify the most aesthetic nasolabial angle as specifically perceived by a random prospective sample of the general population and determine whether age,...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000000385
更新日期:2014-08-01 00:00:00
abstract::In a postoperative wound infection study in plastic surgery, 315 patients were randomized to either outpatient wound control after 30 days (group I) or self-control by questionnaire (group II). We present a new definition of wound infection based on physiologic wound healing. The surveillance of postoperative wound in...
journal_title:Plastic and reconstructive surgery
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00006534-199509001-00028
更新日期:1995-09-01 00:00:00
abstract::A case is reported of bilateral rupture of inflatable implants from a closed capsulotomy, with ingrowth of fibrous tissue through the inflation valves. ...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-197706000-00023
更新日期:1977-06-01 00:00:00
abstract:BACKGROUND:During breast reconstruction using the transverse rectus abdominis myocutaneous (TRAM) flap, the use of mesh for abdominal donor-site closure provides for a technology that potentially offers clinical benefit yet incurs an added cost. The authors' goal was to determine whether it is cost effective to use mes...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章,评审
doi:10.1097/PRS.0000000000000957
更新日期:2015-03-01 00:00:00
abstract:BACKGROUND:The cephalic index is often used to evaluate sagittal craniosynostosis corrections; however, validation of this measure remains untested. METHODS:A three-part study was designed to (1) determine the normal distribution of cephalic indices in untreated sagittal craniosynostosis; (2) examine index values in t...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000003422
更新日期:2017-07-01 00:00:00
abstract:BACKGROUND:Several studies have confirmed a correlation between the concentration of serum hyaluronan and progressive fibrotic disorders such as liver cirrhosis. The aim of this study was to explore the relationship between serum hyaluronan levels and capsular contracture after aesthetic breast augmentation. METHODS:T...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/01.prs.0000220462.28928.83
更新日期:2006-07-01 00:00:00
abstract::We used an ultrasonic surgical aspirator on the epidermal surface to perform dermabrasion instead of the conventional motor-driven grinder. It was determined on histologic examination that it is possible to fragment the epidermis with greater selectively using the ultrasonic surgical aspirator. Abrasion also can be pe...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199604001-00024
更新日期:1996-04-01 00:00:00
abstract::The Hughes tarsoconjunctival flap was initially described in 1937. This flap is best used for reconstructing full-thickness defects involving the central portion of the lower eyelid. The evolution of this flap over the last 60 years is outlined. Several important modifications are presented; these modifications lead t...
journal_title:Plastic and reconstructive surgery
pub_type: 历史文章,杂志文章
doi:10.1097/00006534-199908000-00033
更新日期:1999-08-01 00:00:00
abstract::The efficacy of electrical fields in soft-tissue repair is unclear. Materials with a charged surface provide a localized charged environment. We examined the effects of surface-charged particles in wound healing in rats with paired dorsal incisions with one side serving as a control. Tensiometry demonstrated that afte...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:
更新日期:1992-05-01 00:00:00
abstract::Congenital double-lip deformity is an infrequent developmental abnormality affecting the lips, more commonly the upper lip. We report seven cases of double lip, all in males, of which six were in the upper lip and one in the lower lip. It was quite interesting to observe that in the upper lip, the buccal portion of th...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-198909000-00006
更新日期:1989-09-01 00:00:00
abstract:LEARNING OBJECTIVES:After studying this article, the participant should be able to: 1. Describe the alternatives for auricular reconstruction. 2. Discuss the pros and cons of autogenous reconstruction of total or subtotal auricular defects. 3. Enumerate the indications for prosthetic reconstruction of total or subtotal...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-200104150-00024
更新日期:2001-04-15 00:00:00
abstract::Tissue factor pathway inhibitor is a naturally occurring protein inhibitor of factor X and the tissue factor-factor VII complex of the extrinsic pathway of coagulation. The potential of tissue factor pathway inhibitor as a topical antithrombotic agent was evaluated in a rabbit model of thrombosis that combined intimal...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/00006534-199603000-00015
更新日期:1996-03-01 00:00:00
abstract:SUMMARY:The multidisciplinary approach to lower extremity function preservation is well established and is globally considered the standard of care. Every member of the team contributes their unique skills and knowledge to patient care. The effective integration of negative-pressure wound therapy with instillation (NPW...
journal_title:Plastic and reconstructive surgery
pub_type: 杂志文章
doi:10.1097/PRS.0000000000007608
更新日期:2021-01-01 00:00:00