fa درمان آلوپسی (ریزش مو) و اسکار (جای زخم) روی سر با چند بافت گستر و به روش زیگزاگ (پازل): یک روش جدید کارآزمایی بالینی Clinical Trials <p style="text-align: justify;"><span style="font-size:16px;"><span style="font-family:Times New Roman;"><span style="color:#008080;"><strong><em>Background and Objective</em>:</strong></span> Repairing scalp scar and alopecia is a concern of surgeons. Treating it with tissue expander has indicated promising results in recent decades. This study provides a new method of using two tissue expanders simultaneously for tissue over expansion and repairing flaps&rsquo; edge with puzzle method.<br> <span style="color:#008080;"><strong><em>Materials and Methods</em>:</strong></span> This study was conducted on fifteen 5 to 34- year- old patients with scalp scar greater than 100 cm². Two tissue expanders were used for each patient. Appropriate expansion was achieved with twice injections of 5-8 cc/cm² (6.5 average) normal saline weekly during 80 days. In the second surgery, both tissue expanders were extracted and the scar was removed. Then, advancement and rotational flaps were prepared and the repair was carried out with puzzle method. The patients were followed up for 3-6 months.<br> <span style="color:#008080;"><strong><em>Results:</em></strong></span> No case of wound infection and seroma was observed. Over expansion occurred with an average of 3.3 times larger than scar size. No evidence of expander extrude, flap necrosis or recurrent scarring with more than 3 mm width were seen. New scar became totally hidden with hair. No one needed hair follicle grafting. Patient satisfaction was good to excellent.<br> <span style="color:#008080;"><strong><em>Conclusion:</em></strong></span> Using multiple tissue expanders to accelerate overexpansion and repairing with puzzle (zigzag) method reduces patient referral, waiting time, new scaring and complications and leads to promising cosmetic results.</span></span></p> Keywords: Multiple tissue expanders, Alopecia, Scalp scar, Scalp burn 1 13 http://journal.zums.ac.ir/browse.php?a_code=A-10-4-1066&slc_lang=fa&sid=1 Kioumars Taheri کیومرث طاهری 5200319475328460051402 5200319475328460051402 No Dept. of General Surgery, Ayatollah Mousavi Hospital, Zanjan University of Medical Sciences, Zanjan, Iran دانشگاه علوم پزشکی زنجان، زنجان Seyed Nejat Hosseini سید نجات حسینی nejat.hosini@zums.ac.ir 5200319475328460051403 5200319475328460051403 Yes Dept. of General Surgery, Ayatollah Mousavi Hospital, Zanjan University of Medical Sciences, Zanjan, Iran دانشگاه علوم پزشکی زنجان، زنجان Somayeh Abdollahi Sabet سمیه عبداللهی ثابت 5200319475328460051404 5200319475328460051404 No Dept.of Social Medicine,Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran دانشگاه علوم پزشکی زنجان، زنجان