[Objective]To study the effect of tibial diaphyseal lengthening on the longitudinal growth of the tibia.[Method]Rabbit models of tibial diaphyseal lengthening and tibial osteotomy were established.Standard radiography of the tibia was taken and the length of the tibia was measured.Histology of the proximal and distal tibia was made and the thickness of the growth plate was measured.[Result]Tibial osteotomy alone stimulated the longitudinal growth of the tibia and increased the thickness of the growth plate.However,tibial diaphyseal lengthening suppressed this stimulation resulting in natural longitudinal growth and normal thickness of the growth plate that matched the normal side.[Conclusion]Diaphyseal lengthening of tibia does not inhibit the longitudinal growth of the tibia.

Objective To study the effect of CO 2 pneumoperitoneum and enteric disturbance on serum ?-endorphin (?-EP) in SD rats, in order to investigate their influence on peri-operative stress responses in SD rats. Methods A total of 120 SPF-grade male SD rats were randomly divided into four groups with 30 rats in each group. The four groups received CO 2 pneumoperitoneum (Group A), a 5 cm abdominal incision (Group B), a 5 cm abdominal incision with gastroenteric disturbance (Group C), and intraperitoneal anesthesia (Group D or Control Group), respectively. Concentrations of serum ?-EP of these groups were measured 10 min, 20 min, and 40 min after the beginning of surgery, respectively. Results Concentrations of serum ?-EP in the Group A 10 min, 20 min, and 40 min after the beginning of surgery were 274 7?66 6 pg/dl, 157 3?63 8 pg/dl, and 163 9?74 5 pg/dl, respectively, which were all extremely significantly higher than those in the Control Group ( P

Acute kidney injury ( AKI) in newborns is one of neonatal critical disease,the incidence of AKI is 23%and the mortality is 25%~50%in neonatal intensive care unit (NICU).AKI in newborns is ab-normal renal function due to many various unfavorable factors,such as neonatal asphyxia,low blood volume, shock,hypoxia,hemolysis,low temperature,the clinical manifestations are oliguria or anuria,electrolyte disturb-ance,acid-base imbalance, high concentrations of metabolites in plasma and renal excretion ( urea, creatinine etc.) .At present,there are no effective prevention measures.In recent years,with the progress of blood purifica-tion technology,continuous blood purification ( CBP) has been used from AKI in children to AKI in newborns. Because of the neonatal hemodynamic instability and blood characteristics of small capacity, the application of CBP in the neonatal AKI still faces many problems.The paper summarizes high risk factors and diagnostic crite-ria of AKI in newborns,related problems of neonatal CBP treatment.

Rectal cancer is a common malignant tumor in the gastrointestinal system.For the patients with resectable but high-risk rectal cancer,neoadjuvant and adjuvant chemoradiation plus surgery may improve local control.Compared to adjuvant chemoradiation,neoadjuvant chemoradiation showed the advantage of sphincter preservation.When the goal of preoperative chemoradiation was sphincter preservation,conventional radiotherapy was recommended.Through the analysis of the patients with 5-year survivals,the radiation had a similar impact on the survival as the chemotherapy alone for the patients with the intermediate risk factors.The impact on local control need to be further investigated before recommending chemotherapy alone for those subset patients.Advances in preoperative irradiation,postoperative irradiation and the comparison of preoperative irradiation with postoperative irradiation are also reviewed in this article.

Objective To observe the clinical efficacy of intradermal needle therapy in treating chronic pharyngitis.Method Sixty patients with chronic pharyngitis were randomized into a treatment group and a control group, 30 cases in each group. The treatment group was intervened by intradermal needle therapy at Lieque (LU 7) and Zhaohai (KI 6), while the control group was by Compound Borax solution plus Cydiodine Buccal tablets. The symptoms were scored before and after treatment, and the clinical efficacies were compared.Result The total effective rate was 93.3% in the treatment group versus 80.0% in the control group, and the difference was statistically significant (P<0.05). The symptom scores were markedly changed after the treatment in both groups (P<0.01). The symptom score of the treatment group was significantly different from that of the control group (P<0.05). Conclusion Intradermal needle therapy is an effective method in treating chronic pharyngitis.

Face ; surgery ; Humans ; Mouth ; surgery ; Reconstructive Surgical Procedures ; Retrospective Studies

Facial Nerve Injuries ; rehabilitation ; surgery ; Humans

Computer-Aided Design ; Humans ; Mandibular Fractures ; diagnostic imaging ; surgery ; Mandibular Neoplasms ; diagnostic imaging ; surgery ; Mandibular Reconstruction ; methods ; Surgery, Computer-Assisted ; methods ; Tomography, X-Ray Computed

BACKGROUND: Under wear particles stimulation, mononuclear macrophages, fibroblasts, and osteoblasts can produce a large amount of inflammatory factors, leading to periprosthetic osteolysis. But the precise mechanisms remain unclear. OBJECTIVE: To analyze the molecular biological mechanism underlying osteolysis induced by titanium wear particles . RESULTS AND CONCLUSION: Cleaned titanium particles stimulation induced an unbalanced ratio of RANK mRNA to OPG mRNA. Over-expressed RANK bound to RANK ligand and promoted osteolysis. No RANK mRNA expression was detected in the LPS group, but OPG mRNA expression was transiently increased at 4 hours. NF-κB/inflammatory cytokine, rather than RANK/OPG, is the main signal pathway for LPS to induce osteolysis. After LPS binding to titanium particles, these two signal mechanisms, RANK/OPG and NF-κB/inflammatory cytokine, have synergistic effects during artificial joint loosening.

Objective To evaluate the CT manifestations of intrathoracic metastasis in nasopharyngeal carcinoma and its rule.Methods CT manifestations of intrathoracic metastasis of nasopharyngeal carcinoma in 35 cases confirmed by pathology were analysed.Results The CT findings were:nodular type(27/35),pulmonary hilar type(5/35),peripheral massive type(3/35).Of them,60% patients had metastasis of mediastinum.Conclusion CT is a very useful method in diagnosis of intrathoracic metastasis of nasopharygeal carcinoma.