A case of chronic refractory wound in the abdomen caused by residual foreign body / 中华烧伤杂志

A 59-year-old male patient with local sinus tract formation due to residual foreign body was admitted to the Second Affiliated Hospital of Zhejiang University College of Medicine on December 17, 2018. The examination showed that the residual foreign body was the component of a sticky cloth implanted when the patient underwent appendectomy 27 years ago. Hypertrophic scar developed at the right-lower abdominal incision for appendectomy 23 years ago and the secondary infection after cicatrectomy resulted in non-healing of the wound. The chronic refractory wound healed completely after surgical treatment in our hospital after this admission. The postoperative pathological examination revealed local inflammatory granuloma. This case suggests that chronic refractory wound is likely to form when secondary infection occurs following the surgical procedure near the implant, and aggressive surgery is an effective way to solve this problem.

Comparative study of the condylar positions in different sagittal skeletal facial types with cone-beam computed tomography / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the differences in the condylar position of subjects with skeletal class I and skeletal class II. To provide a basis of diagnosis and treatment.</p><p><b>METHODS</b>Group A was composed of 50 subjects with skeletal class I (27 males and 26 females; age range = 18 years to 30 years; mean age=26 years). Group B comprised 50 subjects with skeletal class II (24 males and 26 females; age range = 18 years to 28 years; mean age=25 years). The condylar position and the shapes of the condyle and the glenoid fossa were linearly measured on the sagittal and coronal sections by cone-beam computed tomography (CBCT). Data were analyzed by SPSS 19.0.</p><p><b>RESULTS</b>No statistically significant differences were found in the measurements of the condylar position between the sides of each group on the sagittal plane and the coronal plane (P > 0.05). There were significant differences on the anterior space and the posterior space between group A and B (P < 0.05). The A/P joint space ratio of group A was larger than that of group B (P < 0.05).</p><p><b>CONCLUSION</b>The subjects of skeletal class I show an anterior condyle position. The subjects of skeletal class II show a posterior condyle position.</p>

Change in sliver metabolism after the application of nanometer silver on burn wound / 中华烧伤杂志

<p><b>OBJECTIVE</b>To investigate the change in silver metabolism after the application of nanometer silver on burn wound.</p><p><b>METHODS</b>Twenty-six burn patients with partial thickness burn covering 6-12% TBSA were enrolled in the study as treatment group (T), and 30 healthy adult volunteers as control group (C). Burn wound covering 5% TBSA was covered with nanometer silver dressing for 5 days. The silver contents in the serum and urine in C group of people and in T group of patients at different time points before and after the application of nanometer silver were measured by atomic absorption spectrum method. The hepatic and renal function was also monitored on the 7th and 14th post treatment days (PTD) after silver application. Tissue samples from the wound and wound edge 14 days after silver application were harvested for the determination of silver content by plumbago stove and atomic absorption spectrum. The silver deposition was also detected by transmission electronic microscope.</p><p><b>RESULTS</b>Compared to those in C group, the silver contents in serum and urine in T group increased on 3rd and 5th PTD, but decreased to the normal level on 14th PTD. Mild hepatic dysfunction occurred in 7 cases on 7 PTD, whereas the renal function remained normal. The tissue mass percentage of silver in burn wound and wound edge was (0.7 +/- 0.1) x 10(-6), but no silver deposition in tissue was observed by transmission electron microscope.</p><p><b>CONCLUSION</b>It was proved to be safe to have the nanometer silver dressing applied on partial thickness burn wound of middle and small areas.</p>