Soft tissue defects resulting from head and neck tumor resection seriously impact the physical appearance and psychological well-being of patients. The complex curvature of the human head and neck poses a formidable challenge for maxillofacial surgeons to achieve precise aesthetic and functional restoration after surgery. To this end, a normal head and neck volunteer was selected as the subject of investigation. Employing Gaussian curvature analysis, combined with mechanical constraints and principal curvature analysis methods of soft tissue clinical treatment, a precise developable/non-developable area partition map of the head and neck surface was obtained, and a non-developable surface was constructed. Subsequently, a digital design method was proposed for the repair of head and neck soft tissue defects, and an in vitro simulated surgery experiment was conducted. Clinical verification was performed on a patient with tonsil tumor, and the results demonstrated that digital technology-designed flaps improved the accuracy and aesthetic outcome of head and neck soft tissue defect repair surgery. This study validates the feasibility of digital precision repair technology for soft tissue defects after head and neck tumor resection, which effectively assists surgeons in achieving precise flap transplantation reconstruction and improves patients’ postoperative satisfaction.
Objective To simplify surgical technique andincrease postoperative survival rate, sleeve anastomosis technique combined cuff technique was used in developing the model of cervical heart transplantation in rats. Methods In this model, the hearts from 25 male SD rats were transplanted into the neck of Wistar rats by anastomosing the donor innominate artery to the recipient right common carotid artery by use of sleeve technique, and the donor pulmonary artery to the recipient right external jugular vein by use of cuff technique. After operation,the rats were treated with cyclosporine A (1.5mg/kg, q.d.), transplanted hearts were followed by daily inspection or palpation and the allograft survival time was more than 3 days as the standard of successful operation. Results The mean operative time was (48.7±3.4) min, with a successful rate of 88%(22/25). Complications were anastomotic hemorrhage( 1 case) and thrombosis(2 cases). During the followup period, 6 rats died of pulmonary infection, abscess in the neck,liver or bladder tumor. The remaining 16 transplanted hearts survived more than3 months. Conclusion The modified operation have advantages ofless operative procedure, shorter operation and ischemia time and easier monitoring of graft function.
OBJECTIVE: To evaluate the clinical efficacy of fasciocutaneous flap in the repair of the III degree burn wound in the facio-cervical region. METHODS: From January 1997 to October 2001, 11 cases of III degree burn wounds in the facio-cervical region were repaired with the cervical-thoracic fasciocutaneous flap ranging from 18 cm x 8 cm to 13 cm x 5 cm. Donor sites were covered with "Z" plasty or skin grafting. RESULTS: Except for partial necrosis of distal end of the flap in 1 case, the flaps in the other 10 cases all survived and presented satisfactory appearance and function during the following up. CONCLUSION: The fasciocutaneous flap in the cervical-thoracic region may provide a large area of flap, and can be easily transferred. It’s an ideal flap for the repair of skin defect in the facio-cervical region, especially for the repair of the wounds with infection or exposure of vessel, nerve and tendon.
OBJECTIVE To repair facial and neck scar using tissue expanding technique. METHODS From January 1991 to January 1995, 16 cases with facial and neck scar were treated. Multiple tissue expanders were put under the normal skin of facial and neck area, after being fully expanded, the scars were excised and the expended skin flaps were transplanted to cover the defects. The size and number of tissue expanders were dependent on the location of the scars. Normally, 5 to 6 ml expanding volume was needed to repair 1 cm2 facial and neck defect. The incisions should be chosen along the cleavage lines or in the inconspicuous area, such as the nasolabial fold or submandibular region. The design of flap was different in the face and in the neck. In the face, direct advanced flap was most common used, whereas in the neck, transposition flap was often used. Appropriate tension was needed to achieve smooth and cosmetic effect. It was compared the advantages and disadvantages of several methods for repair of the defect after facial and neck scar excision. RESULTS Fifteen cases had no secondary deformity after scar excision. Among them, 1 case showed blood circulation disturbance and cured through dressing change. Ten cases were followed up and showed better color and texture in the flap, and satisfactory appearances. CONCLUSION Tissue expanding technique is the best method for the repair of facial and neck scar, whenever there is enough expandable normal skin.
Objective To discuss the reconstruction of severe neck contracture by transplanting combined scapular/parascapular bilobar flaps, and the probability to reestablish three-dimensional movement of the neck. Methods From January 2003 to November 2004, 9 cases of sustained severeneck contractures were treated (aged 9-32 years). The combined scapular/parascapular bilobar flaps, pedicled on the circumflex scapular vascular bundle, were microsurgically used to cover the soft tissue defect after excision of hypertrophic scar and release of contracture. The maximum size of the combined bilobar flap was 20 cm×8 cm to 20 cm×11 cm，while the minimum one was 15 cm×4 cm to 15 cm×6 cm. Results The combined scapular/parascapular flapswere successfully used to treat 9 cases of severe neck contracture. All patients were satisfied with the final functional and aesthetic results. There was no recurrence during 3-9 months follow-up for 8 patients. The cervicomental angle was 90-105°.Conclusion The combined bilobar scapular/parscapular flap, providing a large area of tissue for coverage in three dimensions with a reliable blood supply by only one pedicle anastomosis during operation, is agood option for reconstruction of the severe neck contracture.
Objective To investigate the operative method and efficacy of subcutaneous pedicle scar-band rotation flap in the treatment of cervical postburn scar contracture. Methods Between August 2008 and May 2010, 15 patients with cervical postburn scar contracture were treated with subcutaneous pedicle scar-band rotation flaps, including 9 males and 6 females with an average age of 17.3 years (range, 7-35 years). The disease duration was 1-8 years (mean, 3 years). The locations were the left cervical region in 6 cases, the right cervical region in 8 cases, and mental cervical angle region in 1 case. According to LI Ao’s classification standard for cicartrical contracture, there were 12 cases of grade I and 3 cases of grade II. The area of scar ranged from 8 cm × 5 cm to 25 cm × 12 cm. After scar relaxation, wounds were repaired with the subcutaneous pedicle scar-band rotation flaps of 7 cm × 5 cm to 15 cm × 10 cm at size. In 3 cases of grade II, free split thickness skin grafts (7 cm × 4 cm to 12 cm × 7 cm at size) were used simultaneously. Results After 2 weeks of operation, 2 scar-band flaps had distal partial necrosis and healing was achieved after dressing change with formation of hypertrophic scar; the others survived with healing of incisions by first intention. After 6-12 months of follow-up, all patients possessed good cervical contours, sufficient release of scar contractures, and normal cervico-mandicular or mental cervical angles. The skin’s color and texture were satisfactory. There was no recurrence of cervical scar contracture and other complications. All patients acquired normal cervical movement at last follow-up. Conclusion Subcutaneous pedicle scar-band rotation flap is a simple, efficient, and versatile technique in release of cervical postburn scar contracture. It is an effective method to make use of the lateral excess scar flap to resurface defects caused by scar release.
ObjectiveTo systematically review the efficacy and safety between intrathoracic anastomosis (IA) and cervical anastomosis (CA) after esophagectomy using gastric tube. MethodsWe electronically searched databases including PubMed, EMbase, The Cochrane Library (Issue 11, 2014), Web of Knowledge, CNKI, CBM, and WanFang Data for randomized controlled trials (RCTs) of IA vs. CA after esophagectomy using gastric tube from inception to Nov, 2014. Two reviewers independently screened literature according to the inclusion and exclusion criteria, extracted data and assessed the risk of bias of included studies. Then, meta-analysis was performed by RevMan 5.2 software. ResultsA total of 10 RCTs involving 1 138 patients were included, of which, 570 patients were in the IA group and the other 568 patients were in the CA group. The results of meta-analysis showed that the incidences of anastomotic leak (RR=2.72, 95%CI 1.67 to 4.45, P<0.05) and injury of recurrent laryngeal nerve (RR=5.64, 95%CI 2.41 to 13.18, P<0.05) in the IA group were significantly lower than those in the CA group, but the IA group had a higher rate of positive margins (RR=0.25, 95%CI 0.09 to 0.67, P<0.05). There were no significant differences between two groups in postoperative anastomotic stricture (RR=1.12, 95%CI 0.73 to 1.74), pulmonary complications (RR=1.10, 95%CI 0.60 to 2.01), operation mortality (RR=1.03, 95%CI 0.55 to 1.94), tumor recurrence (RR=1.57, 95%CI 0.72 to 3.44) and chylothorax (RR=0.76, 95%CI 0.24 to 2.36). ConclusionIA after esophagectomy using gastric tube has lower rates of anastomotic leak and injury of recurrent laryngeal nerve than CA but with a higher rate of positive margins. There are no significant differences between the two surgical operations in operation mortality, postoperative anastomotic stricture and pulmonary complications. IA could reduce the incidence of postoperative complications and is an effective and safe surgical operation for digestive tract reconstruction after esophagectomy. Due to limited quality and quantity of included studies, more high quality studies are needed to verify the conclusion for long-term efficacy and the quality of life.
ObjectiveTo explore the value of fluorescence tracer technique in sentinel lymph node (SLN) orientation of cN0 papillary thyroid cancer. MethodsThe total clinical data of 40 cT1-3N0M0 thyroid cancer patients admitted from January 2015 to January 2016 in our hospital were collected, and the SLN with indocyanine green (ICG) as fluorescent trace agent were observed and detected, and the effect of ICG detecting SLN and the guide role of SLNB on the dissection of the central area of neck lymph nodes by intraoperative frozen biopsy pathology and postoperative paraffin pathology were analyzed. ResultsA total of 40 thyroid cancer patients were treated by SLNB and then conducted by the dissection of the central area of neck lymph nodes, and 37 cases detected SLN, so the detection rate was 92.5% (37/40). And a total of 98 SLNs were detected, 1-5 for each case, average of 2.65/case. Intraoperative frozen pathological detected 28 cases of patients with metastases in SLN, and 9 patients without metastasis, including 1 case with postoperative pathology detecting micrometastasis in SLN and other 8 cases without metastasis in the central area of neck lymph nodes. Three cases who were not detected the SLN showed no metastases in final postoperative paraffin pathology. The SLNB of ICG fluorescent tracer was with a sensitivity of 96.6% (28/29), false-negative rate of 3.45% (1/29). ConclusionThe fluorescent tracer technique can guide the dissection of the central of neck lymph node of cN0 thyroid cancer patients accurately with a high detection rate and advantages of high sensitivity in detecting the SLN of thyroid cancer.