Objective To investigate the clinical efficacy of modified arthroscopic revision release for patients who have gluteal muscle contracture and who have poor outcomes after traditional open surgery.Methods The data of patients who underwent modified arthroscopic revision release for residual symptoms of gluteal muscle contracture after traditional open surgery were retrospectively collected and analyzed.All subjects underwent the procedure between December 2015 and December 2022.The surgical efficacy was assessed by evaluating improvements in specific symptoms,including bilateral lower extremity inequality,hip internal rotation and adduction mobility,squatting with both knees pressed together,and the ability to cross one's legs in supine position,as well as the preoperative and postoperative results for the gluteal muscle contracture functionality scale.Paired t-test was performed to examine whether the differences between preoperative and postoperative measurements were statistically significant.Results A total of 36 patients were followed up systematically,with the mean follow-up period being(22.4±4.9)months.All patients had significantly higher scores for assessment with the gluteal muscle contracture functionality scale at the last follow-up than their preoperative assessment results,showing an increase from the preoperative scores of 40.2±5.5 to 78.4±4.9(P＜0.05).At the follow-up,all patients showed improvement in hip adduction and internal rotation mobility compared with their preoperative status and all patients were able to squat with both knees pressed together.Moreover,only 1 patient still had difficulty in crossing his legs.A total of 27 cases(75%)had preoperative leg length inequality,all of which improved to varying degrees at follow-up.Among all the patients(72 hips/cases),8 cases had subcutaneous hematomas and incisional ecchymosis,which were resolved after conservative treatments such as hot compresses.3 cases showed decreased hip abductor strength,but the muscle strength gradually recovered after postoperative exercise and rehabilitation.There were no complications such as subcutaneous exudate,neurovascular injury,or surgical site infection.Conclusion Modified arthroscopic revision release of gluteus muscle contracture is suitable for cases with poor outcomes after conventional open surgery.

Objective:To evaluate the clinical efficacy of the modified biplane Chevron osteotomy and autogenous osteochondral transplantation for the treatment of talar cartilage injury with bone cyst.Methods:From February 2016 to February 2019, 26 patients with talar cartilage injury and bone cyst were treated at Department of Orthopaedics, The First Affiliated Hospital to Guangxi Medical University. They were 16 males and 10 females, aged from 22 to 50 years (average, 36.2 years). According to the Hepple classification, there were 5 cases of type Ⅳ and 21 cases of type Ⅴ. The extent and range of talar cartilage injury were evaluated by arthroscopy, the modified biplane Chevron osteotomy of medial malleolus was performed to expose cartilage defects medial to the talus, unstable cartilage was removed thoroughly, sclerotic wall of the bone cyst was freshly treated, and an osteochondral column taken from the non-weight-bearing area of the ipsilateral femoral medial condyle was implanted into the injured area of talar cartilage. The clinical efficacy was evaluated by comparing the ankle-hindfoot scores of American Orthopedic Foot and Ankle Society (AOFAS), Karlsson ankle scores, visual analogue scale (VAS) and Lysholm ankle scores between preoperation and one year post-operation.Results:All the 26 patients were followed up for an average of 20.6 months (from 12 to 30 months). Follow-up did not observe any postoperative complications like incision infection, cyst recurrence or malunion, or any obvious pain or movement limitation at the donor knee joint. The AOFAS ankle-hindfoot scores were significantly increased from preoperative 64.3±3.9 to 89.5±5.1 one year postoperation, the Karlsson scores were significantly increased from preoperative 60.5±5.5 to 85.2±6.9 one year postoperation, and the VAS scores were significantly decreased from preoperative 6.2±1.1 to 1.8±0.9 one year post-operation (all P<0.05). The Lysholm ankle scores before and after operation were 94.7±1.9 and 94.1±1.8, respectively, showing no significant difference ( P>0.05). Conclusion:In the treatment of talar osteochondral injury and bone cyst, the modified biplane Chevron osteotomy of medial malleolus and autogenous transplantation of osteochondral column can effectively relieve ankle pain and improve ankle function, leading to satisfactory clinical efficacy.

This paper introduces the design and development of a light-weighted medical equipment management system in hospital based on structured information flow architecture, to collect and analyze data in medical equipment lifecycle management processes. It applies co-operative work flows both online and off-line to achieve high quality data collection, and to increase the efficiency for clinical personals and clinical engineers. This system manages to apply the UDI system, implements the intelligent access to medical equipments, uses data analysis to provide intelligent services. It will boost the quality control management and information construction synchronously.
Equipment and Supplies ; Hospitals ; Materials Management, Hospital ; Quality Control

Objective To investigate the safety and clinical response of dendritic cells (DC)vaccine loaded with HLA-A2-restricted peptides MAGE-3、 Tyr、 MART-1 and GP-100 against malignant melanoma. Methods Twenty three HLA-A2 positive patients with malignant melanoma were enrolled.Peripheral blood mononuclear cells were separated into adherent cells for induction of DC loaded with four peptides. DC vaccine was administered subcutaneously once a week in inguinal region. The immunological responses and clinical responses were evaluated. Results Dendritic cell vaccination were well tolerated in all patients and there was no toxicity observed. Serum levels of IL-2, IL-12 and IFN-γincreased significantly after first vaccination and fourth vaccination. The positive rate of DTH test was 50% (5/10), and 2 fold increase of CD8+ IFN-γ+ cells were observed in 6 of 10 patients. Stable disease was observed in 11 of 23 patients, one patient had a complete metastasis regression, four patients had 50% regression of metastasis,four patients had a minor response, and disease progressed in three patients. Conclusion DC vaccines loaded with peptides MAGE-3、 Tyr、 MART-1 and GP-100 can elicit non-specific and specific immune responses, leading disease control. DC vaccine is considered one of safe and effective treatments for malignant melanoma.