毛发移植术在治疗小面积外伤性眉缺损中的应用

目的：探讨应用毛发移植技术治疗小面积眉缺损的疗效。方法：18例小面积眉缺损患者,均为单侧眉缺损,眉毛缺损面积为0.5×0.5cm～1.0×1.0cm。在局麻下从耳后发际内或颞部获取单体毛囊,按照原有眉毛的生长方向植入眉毛缺损处。结果：18例患者术后随访3～10个月。未见移植的眉毛明显脱落,植入的眉毛生长良好,需要7天左右修剪一次。两侧眉毛对称。所有患者对术后效果表示满意。结论：应用单体毛囊移植治疗小面积眉毛缺损,能再造出与对侧健康眉毛相似的眉毛,效果良好。     

Advancement in scalp grafts

Hair transplantation has become the most frequent operation performed on male patients because the results are very gratifying. We have been using the square scalp grafts for more than 10 years. They are an important technical advancement over the round punch grafts because they have 25% more hair than round grafts with the same diameter. The donor site is sutured and leaves only a lineal scar. In this way, grafts can be taken from the same place several times. The grafts are manipulated under magnification to minimize damage. The operation is performed under local anesthesia on an outpatient basis.     

Hair transplantation to the eyebrow, eyelashes, and other parts of the body

Since its earliest applications, hair transplantation has been used for treating not only the scalp in pattern baldness but also other parts of the body, commencing with eyebrow reconstruction. The earliest micrografts were applied to the eyebrow more than 30 years before their application to the scalp became the standard of care. Today hair transplantation is applied to a number of other areas. The principle behind transplanting these areas is the same-once transplanted, the hairs continue to grow because of the phenomenon of donor dominance. This article reviews the role and technique of hair transplantation to the eyebrows and eyelids, chest, beard and moustache, and pubic escutcheon.     

Hair Transplantation: Management of Donor Area

BACKGROUND: Hair transplantation entails the removing of a strip of permanent hair from the occipital scalp and reimplanting it piecemeal into the recipient area. Methodologies for effecting this are reasonably complex and have undergone many changes and improvements over the years. The simplest part of hair transplantation, at least in theory, is the removal of the donor strip and closure of the resultant defect. Unfortunately, however, the improvements that have taken place in hair transplantation in general have not spilled over into improved donor area outcomes. Unsightly donor scars and fibrosis are still not only with us, but are possibly even more pervasive than ever. One explanation given for deteriorated donor sites is the harvesting of relatively greater numbers of grafts. But is this the whole story? OBJECTIVE: To describe some technical aspects of donor area management consistent with harvesting the best possible donor strip, while leaving an inconspicuous scar and preserving the viability of the residual tissues for subsequent harvesting. METHODS: In 1994 a clinical research project designed to determine what technical surgical modalities are optimal for excising and reconstructing scalp tissues was commenced. This was done with particular reference to the donor area in hair transplantation. The study involved more than 1000 scalp operations using various techniques and instrumentation, and comparing and contrasting results. RESULTS: The best results were obtained when tissues were least traumatized. Tension generated at wound closure was found to be the main culprit in determining less than optimal residual donor sites. CONCLUSION: Notably improved postharvesting donor sites are most likely to result when measures are taken to ensure minimal trauma by taking definitive steps to combat tension in the tissues. Modest undermining combined with deep plane fixation facilitates channeling of tension vector forces from at-risk superficial tissues into nonundermined tissues and deep tissues, each of which is optimally equipped to withstand the adverse consequences of tension.     

Baldness surgery

Redistribution from hair-rich to hair-poor areas is the fundamental principle of baldness surgery. Success of hair transplantation is based on the fact that transplanted hair follicles will behave as they did in their original area and continue to grow. Three basic techniques are employed: scalp flaps, scalp reductions and hair grafts. Each technique has undergone considerable refinements answering to initial wrong results and criticisms. The typical doll-hair tufted effect of old macro-grafts has disappeared with micro-graft shift. The unaesthetic cheese-like Hippocratic crown donor defect aspect ended when harvesting a long strip of occipital hair bearing scalp. The posteriorly directed hair growth has disappeared by using superiorly based flaps. Respective indications and tension-free closure ensure that the incidence of necrosis is low. Limited results of old scalp reductions have decreased by testing preoperative laxity of the scalp and using extensive undermining of the scalp. The future may release on medical treatment avoiding dihydrotestosterone to act on genetically predisposed follicles avoiding miniaturization of the hair and baldness development. However, when baldness has appeared, as the hair follicle's culture is not actually effective, the state of art is still to plan a surgical strategy using successive stages of this large panel of techniques to reach a natural effect with the best hair orientation and density.     

国人自体头发移植术的研究

自１９８８年９月至１９９２年１２月，共已施行９８０次自体头皮打孔皮片头发移植术，主要用于供区发源充沛的脂溢性秃发和瘢痕性秃发者３９５例。根据国人的头发数量较白种人约少１／３，毛干呈直线型，以及头发与头皮色泽反差大等特点，采用了Ｌ形排列移植、圆皮片间插入半圆皮片，术后头皮文身及烫发等相应措施以提高疗效，并认为成人秃发适宜头发移植，而儿童则更适宜头皮扩张术。     

国人自体头发移植术的研究

自1988年9月至1992年12月,共已施行980次自体头皮打孔皮片头发移植术,主要用于供区发源充沛的脂溢性秃发和瘢痕性秃发者395例。根据国人的头发数量较白种人约少1/3,毛干呈直线型,以及头发与头皮色泽反差大等特点,采用了L形排列移植、圆皮片间插入半圆皮片,术后头皮文身及烫发等相应措施以提高疗效。并认为成人秃发适宜头发移植,而儿童则更适宜头皮扩张术。     

Using Nonscalp Hair in Scalp Hair Restoration—Theory and Execution

Harvesting of beard and body hair follicles for transplantation can be an effective form of treatment for appropriate patients. These patients may have had prior scalp transplantation and require repair but do not have sufficient scalp donor follicles remaining. Other patients will have these hairs mixed with scalp hairs to produce a greater density of hair on the bald scalp. Follicular unit excision (FUE) is preferred for body and beard follicle harvesting. Not all body hair is suitable for transplantation. Only hairs that are similar in appearance and behavior to scalp hair are suitable for transplantation to the scalp. The best nonscalp sources are the beard and anterior torso. Hairs from other body sites may be used for transplantation to the eyebrows. The standard techniques of FUE harvesting and anesthesia must be modified from those used in scalp harvesting to be safe and effective. With proper patient selection and technique, a significant cosmetic benefit can be achieved from these procedures.     

Improved hair restoration method for burns

Background

Extracted partial longitudinal follicular units can be used as complete follicular units to regenerate completely differentiated hair growth. The partial follicular units that remained in the dermis in the donor area can survive and produce hairs. This technique enables us to multiply hair follicles in vivo, while preserving the donor area and therefore is suitable in persons, who have a relative small donor area compared to the recipient area, as in scalp burns.

Objectives

With this study, we try to determine if partial longitudinal follicular unit transplantation (PL-FUT) can be used for facial and/or scalp burns.

Materials and methods

Four burn victims (age 22-39 years, mean 27.75 years) were treated in the face (eyebrows, and beard) and/or on the scalp with PL-FUT. The grafts were harvested with hollow wave-tipped needles with an inner diameter of 0.6 mm from the occipital area of the scalp. The suitable longitudinal partial follicular units were impregnated with a preservative medium, and implanted into the recipient area. Hair growth in the donor area as well as the recipient area was observed before treatment, and at intervals of 1 week, 3 months and 1 year after the treatment.

Results

After evaluation of the donor area, sometimes a few little white spots were visible, but almost all hair follicles in the donor site re-produce hairs after 2 years. All treated patients had satisfactory or very satisfactory cosmetic results in the treated area.

Conclusions

Longitudinal partial follicular unit transplantation (LP-FUT) may represent the first reliable patient-friendly method to generate two hair follicles from one hair follicle with consistent results and preservation of the donor area. Therefore, this method is very suitable for people with facial and/or scalp burns.     

The Art of Repair in Surgical Hair Restoration Part I: Basic Repair Strategies

BACKGROUND: An increasingly important part of many hair restoration practices is the correction of hair transplants that were performed using older, outdated methods, or the correction of hair transplants that have left disfiguring results. The skill and judgment involved in these repair procedures often exceed those needed to operate on patients who have had no prior surgery. The use of small grafts alone does not protect the patient from poor work. Errors in surgical and aesthetic judgment, performing procedures on noncandidate patients, and the failure to communicate successfully with patients about realistic expectations remain major problems. OBJECTIVE: This two-part series presents new insights into repair strategies and expands upon several techniques previously described in the hair restoration literature. The focus is on creative aesthetic solutions to solve the supply/demand limitations inherent in most repairs. This article is written to serve as a guide for surgeons who perform repairs in their daily practices. METHODS: The repairs are performed by excision with reimplantation and/or by camouflage. Follicular unit transplantation is used for the restorative aspects of the procedure. RESULTS: Using punch or linear excision techniques allows the surgeon to relocate poorly planted grafts to areas that are more appropriate. In special situations, removal of grafts without reimplantation can be accomplished using lasers or electrolysis. The key elements of camouflage include creating a deep zone of follicular units, angling grafts in their natural direction, and using forward and side weighting of grafts to increase the appearance of fullness. The available donor supply is limited by hair density, scalp laxity, and scar placement. CONCLUSION: Presented with significant cosmetic problems and severely limited donor reserves, the surgeon performing restorative hair transplantation work faces distinct challenges. Meticulous surgical techniques and optimal utilization of a limited hair supply will enable the surgeon to achieve the best possible cosmetic results for patients requiring repairs.     

Laser Hair Transplantation II

BACKGROUND: Micrografting has revolutionized hair transplantation, resulting in far more natural results than have been achieved prior to this technique. Operative problems including bleeding, graft compression, and ease of graft insertion have been alleged to be decreased with the use of a high-energy pulsed CO2 laser for creation of recipient sites. However, because of thermal injury to surrounding tissue, diminished hair growth and slower wound healing also have been seen. OBJECTIVE: A new laser handpiece, designed to minimize tissue thermal damage to hair recipient sites was tested in comparison to 18-gauge needle recipient sites in the same patients. Hair growth counts at 6 months as well as various measurements of operative problems were compared. METHODS: Two hundred laser grafts were performed on one scalp side and compared to 200 needle grafts on the opposite side. Hair counts preoperatively and at 6 months were performed. Biopsies for depth and surrounding tissue damage were taken intraoperatively. Time for completion of various stages of the procedure for each side were recorded, as well as the incidence of side effects per side. RESULTS: Hair growth was equal for each side. Bleeding and operative time were significantly reduced and ease of graft insertion was increased on the laser side. Graft compression and scarring were not seen. CONCLUSIONS: Laser hair transplantation is faster than using conventional techniques and results in equal hair growth, and should be considered as a viable alternative technique.     

Unilateral donor lung dysfunction does not preclude successful contralateral single lung transplantation.

Single lung transplantation remains limited by a severe shortage of suitable donor lungs. Potential lung donors are often deemed unsuitable because accepted criteria (both lungs clear on the chest roentgenogram, arterial oxygen tension greater than 300 mm Hg with an inspired oxygen fraction of 1.0, a positive end-expiratory pressure of 5 cm H2O, and no purulent secretions) do not distinguish between unilateral and bilateral pulmonary disease. Many adequate single lung grafts may be discarded as a result of contralateral aspiration or pulmonary trauma. We have recently used intraoperative unilateral ventilation and perfusion to assess single lung function in potential donors with contralateral lung disease. In the 11-month period ending October 1, 1990, we performed 18 single lung transplants. In four of these cases (22%), the donor chest roentgenogram or bronchoscopic examination demonstrated significant unilateral lung injury. Donor arterial oxygen tension, (inspired oxygen fraction 1.0; positive end-expiratory pressure 5 cm H2O) was below the accepted level in each case (246 +/- 47 mm Hg, mean +/- standard deviation). Through the sternotomy used for multiple organ harvest, the pulmonary artery to the injured lung was clamped. A double-lumen endotracheal tube or endobronchial balloon occlusion catheter was used to permit ventilation of the uninjured lung alone. A second measurement of arterial oxygen tension (inspired oxygen fraction 1.0; positive end-expiratory pressure 5 cm H2O) revealed excellent unilateral lung function in all four cases (499.5 +/- 43 mm Hg; p less than 0.0004). These single lung grafts (three right, one left) were transplanted uneventfully into four recipients (three with pulmonary fibrosis and one with primary pulmonary hypertension). Lung function early after transplantation was adequate in all patients. Two patients were extubated within 24 hours. There were two late deaths, one caused by rejection and Aspergillus infection and the other caused by cytomegalovirus 6 months after transplantation. Two patients are alive and doing well. We conclude that assessment of unilateral lung function in potential lung donors is indicated in selected cases, may be quickly and easily performed, and may significantly increase the availability of single lung grafts.     

The Distribution of Follicular Units in the Chinese Scalp: Implications for Reconstruction of Natural-Appearing Hairlines in Orientals

BACKGROUND: Follicular transplantation using hair in its naturally occurring groups, called follicular units (FUs), has become the most popular technique in hair restoration surgery. Recently follicular transplantation was performed with a qualitative and quantitative concept to achieve the best clinical result. The characteristics and distribution of FUs are well studied in Caucasians and widely applied in hair transplantation surgery. OBJECTIVE: In order to understand the normal distribution of FUs in the Chinese scalp, we counted the number of hairs and FUs in normal Chinese scalp to provide general information for surgical planning and design in bald Chinese patients. METHODS: A total of 50 normal and 50 bald Chinese adults were enrolled to count the hairs on their scalp. One hundred bald patients receiving hairline reconstruction were also prospectively quantitatively evaluated. RESULTS: In normal Chinese scalp, an average 71.78 FUs/cm(2) and 137.08 hairs/cm(2) were calculated with a follicular density of 1.91 hairs/FU. Two-hair FUs are the predominate group (50.29%). In bald patients, an average of 68.07 FUs/cm(2) was found, which was less than that of the occipital scalp in normal nonbald patients. In reconstruction of the frontal hairline, a total of 700-1000 FUs were implanted with an average density of 30 FUs/cm(2). CONCLUSION: We found the average number of FUs (0.72 FU/mm(2)) was less than that in Caucasian patients (1 FU/mm(2)). The average density of 30 FUs/cm(2) implanted was suitable to reconstruct a natural frontal hairline in bald Chinese patients, which can achieve about 40% of normal hair density. Our results could provide the hair surgeon with general information about hair distribution on the Chinese scalp for surgical planning and design in their patients.     

自体断层瘢痕组织复合皮修复儿童功能部位瘢痕挛缩畸形

目的探讨自体断层瘢痕组织复合皮修复儿童功能部位瘢痕挛缩畸形的临床效果。方法本组患儿共12例,男7例,女5例,年龄3~10岁,均为2015年3月至2018年3月就诊于空军军医大学西京医院的烧伤后瘢痕挛缩畸形患儿。瘢痕挛缩畸形部位分别位于腋部、肘部、腘窝及躯干等14处。其中腋部瘢痕黏连挛缩导致肩关节上举角度仅为30°~60°;肘部瘢痕挛缩导致肘关节伸直角度仅为45°~90°;腘窝瘢痕导致膝关节伸直角度仅为95°~110°,侧胸腹部瘢痕挛缩致同侧乳头下移5 cm,伴站立位中线向患侧屈曲约20°。术中彻底松解瘢痕挛缩,恢复关节活动度,复位移位器官,并形成继发创面,范围5 cm×10 cm^11 cm×20 cm。选取其他瘢痕区域作为供区,其中背部8处,大腿6处。用鼓式取皮机或电动(气动)取皮机先切取厚层瘢痕皮,再以0.5 mm厚度切取自体断层瘢痕组织,按1∶1比例制备网状瘢痕支架,其上覆盖取自头部的刃厚皮片,形成自体断层瘢痕组织复合皮,植于瘢痕挛缩松解后继发创面。切取的瘢痕表皮回植原瘢痕供区。供、受区均常规加压包扎,7~10 d后更换敷料,查看皮片成活情况并进行随访观察。结果12例患儿共移植14块自体断层瘢痕组织复合皮,所制备的复合皮均与瘢痕松解后继发创面大小、形状一致,其中12块皮片成活良好,2处因局部感染导致部分皮片坏死,经换药后治愈。随访2~24个月,自体断层瘢痕组织复合皮术区外观满意,腋部、肘部、腘窝等关节均充分松解,肩关节挛缩患者术后上举达150°~170°;肘关节挛缩患者均可基本伸直,达170°~180°;膝关节挛缩患者可完全伸直,达180°;侧胸腹部瘢痕挛缩松解后患侧乳头恢复正常位置,站立位中线基本正常。14块瘢痕表皮回植区皮片均成活良好,外观与术前无明显区别。头部供皮区愈合良好,无瘢痕形成及脱发现象。结论自体断层瘢痕组织复合皮修复儿童功能部位瘢痕挛缩畸形效果较好,为儿童深度烧伤后遗畸形的修复提供了一种新手段。     

Hair transplantation in patients with inadequate head donor supply using nonhead hair: report of 3 cases

Follicular unit extraction is becoming an increasingly popular technique for hair transplantation, as it obviates the linear scarring associated with strip harvesting, and can provide highly presentable results. Using this technique, a few reports have described the small scale use of nonhead hair for head hair transplantation in men with inadequate head hair donor supply. In this report, 3 patients who were severely bald had hair transplanted from the chest, abdomen, legs, shoulders, or beard, as well as the head to achieve full coverage and excellent hairlines. Of the 3 cases, 2 had undergone previously unsuccessful hair transplant surgeries. Approximately 80% to 85% of the transplanted grafts survived. Although hair length and quality, surgery time, and the requirement for improved surgical skills remain challenges when using this technique, the sufficiently good outcomes from these selected candidates suggest that this technique may offer the possibility of restoring even severely bald states to normality in patients who would otherwise not be candidates for traditional hair transplantation surgery.     

The scalp as a favorable donor site for limited-sized split-thickness skin grafts in comparison to the thigh donor site

We compared the split-thickness skin graft donor sites of hair bearing scalp (n=86) and thigh (n=27) in 113 patients, predominantly adults over a 6-month period. Donor site morbidity (pain, epithelialization, scars) was evaluated, including intensity and duration of pain, number of dressing changes, and duration of epithelialization of the wound. Graft thickness and quality was identical in the two groups. Patients with grafts from the scalp had fewer complaints than those with grafts from the thigh; they also had faster reepithelialization. Costs for staff and material related to the frequency and duration of dressing changes were significantly lower in patients with scalp grafts. The limited size of these grafts must be considered. The scalp as a donor site has the advantage of lower donor site morbidity with minimal pain and fast epithelialization. There was no scarring or alopecia in any of the patients.     

Experimental study of oversized grafts in a canine living-donor lobar lung transplantation model

BACKGROUND: For infants and small children, organ transplantation is limited by the size discrepancy between donor and recipient. To address this problem, the use of over-sized grafts from living-relative donors could potentially expand the donor pool. The aim of this experimental study was to evaluate the effect of oversized grafts on early pulmonary function and to identify an indicator for acceptable size discrepancy. METHODS: Fourteen bilateral lobar lung allotransplant operations were performed without cardiopulmonary bypass in weight mismatched pairs of dogs. Animals were divided into 2 groups: Group I (n = 7), donor/recipient lung volume ratio < 2.85; Group II (n = 7), donor/recipient lung volume ratio >2.85. Pulmonary function of the recipient was measured before chest closure, after chest closure, and after the ventilator was removed. RESULTS: Pulmonary vascular resistance and airway pressure significantly increased in Group II after chest closure (1493 +/- 195 dynes sec cm(-5) and 14.4 +/- 0.9 mm Hg vs 2784 +/- 140 dynes sec cm(-5) and 23.4 +/- 1.2 mm Hg, p < 0.001). After the ventilator was removed, all recipients in Group I showed PaO2 > 239 mm Hg and PaCO2 < 76 mm Hg, whereas, all recipients in Group II showed PaO2 < 116 mm Hg and PaCO2 > 169 mm Hg. The donor/recipient chest circumference ratio was less than 1.3 in all but 1 dog in Group I. CONCLUSIONS: Acceptable, oversized grafts provide adequate pulmonary function, although excessively oversized grafts cause significant impairment in pulmonary function after chest closure. Chest circumference provides useful size-match criteria when oversized grafts are used in this canine experimental model.     

提高毛发移植的覆盖率

目的探讨显微外科技术自体毛发移植的特点和方法,提高毛发移植成活的覆盖率。方法在较低温度(20°C)环境下,采用边切边缝方法取耳后或枕后毛发,在显微镜下分离成保留周围少量脂肪组织的毛囊族或单株,按需要移植部位不同进行不同的毛囊族或单株并套插的显微外科技术移植共31例。结果31例移植毛发后随访21例,随访时间6~38个月,移植后的毛发能基本覆盖无毛发区的皮肤和瘢痕,移植覆盖率较原来的移植方法提高33%,且外形自然,效果稳定。结论显微外科技术自体毛囊族状(微株小株)或单株移植,具有操作快、损伤小、低温保湿等特点,能较好地保留毛囊周围少量脂肪,在孔与孔的皮肤间隙内再用毛发移植针植入单株毛坯的“套插”移植,更有助于增加毛发覆盖率。     

显微自体毛发单位移植治疗毛发缺失

目的:研究应用显微外科技术进行自体毛发单位移植治疗毛发缺失的临床疗效。方法:切取耳后或头枕部条形头皮组织,低温下,手术显微镜配合将头皮分离成单株和多株移植物,并按需要将移植物移植入受区。结果:42例患者,60个毛发种植区完成手术。经6～12个月随访,移植后的毛发能覆盖受区皮肤,形态自然,效果满意,毛囊成活率90%～95%。结论:在显微外科设备辅助下,进行毛胚单位的移植,提高了毛囊移植过程中的解剖精度,减少损伤,提高成活率。该方法值得在毛发移植手术中推广应用。     

Eyebrow Transplantation

BACKGROUND: Reconstruction of the eyebrow has historically been accomplished with temporal scalp pedicle flap formation or free composite scalp grafts. These two techniques may be associated with substantial morbidity and a false, overly dense eyebrow appearance. Hair transplantation of the eyebrows has been described with excellent results, but is relatively underreported in the literature. OBJECTIVE: To determine whether modern techniques of micrograft hair transplantation can suitably re-create an aesthetic eyebrow in a case of iatrogenic eyebrow alopecia. METHODS: A 33-year-old woman with iatrogenic eyebrow alopecia underwent four sessions of eyebrow micrograft hair transplantation to re-create both eyebrows. RESULTS: Suitable aesthetic eyebrows were re-created in a symmetric fashion with proper hair orientation. The process was time consuming and tedious, but highly effective. CONCLUSION: Eyebrow transplantation is a suitable alternative to pedicle flap formation and composite scalp grafting. It is a straightforward procedure that can be performed in the office under local anesthesia with minimal attendant morbidity. The result may be superior to that seen with more involved eyebrow replacement procedures.