Effect of Eccentric Exercises on Knee Function and Neuromuscular Control of Patellofemoral Pain Syndrome / 中国康复理论与实践

Objective:To investigate the effect of eccentric exercise training on knee function and neuromuscular control in patients with patellofemoral pain syndrome. Methods:From September, 2016 to September, 2019, 39 outpatients with patellofemoral pain syndrome visiting our hospital were randomly divided into control group (n = 19) and experimental group (n = 20). Both groups received routine rehabilitation, while the experimental group received eccentric training of quadriceps femoris in addition, for eight weeks. They were assessed with Visual Analogue Scale (VAS) of pain, Lysholm score, while the acceleration time was measured with Isokinetic Testing and Training System, and stability index with Dynamic Balance Tester. Results:The VAS score, acceleration time of all the muscles, and overall, anterior-posterior and medial-lateral stability indexes decreased (t > 2.521, P < 0.05), and the Lysholm score increased (|t| > 13.628, P < 0.001) in both groups after treatment, while the VAS score, acceleration time of all the muscles, overall and anterior-posterior stability indexes were less (|t| > 2.174, P < 0.05), and the Lysholm score was more (t = 11.947, P < 0.001) in the experimental group than in the control group. Conclusion:Eccentric exercise training of quadriceps femoris is effective on pain, knee function and neuromuscular control for patients with patellofemoral pain syndrome.

A case-control study of two internal fixation methods in the treatment of comminuted fracture of inferior pole of patella / 中国骨伤

OBJECTIVE@#To compare the effects of tension band combined with patellar cerclage and memory alloy patellar concentrator fixation in the treatment of comminuted fracture of the lower pole of patella.@*METHODS@#From July 2015 to July 2019, 60 patients with distal patellar fracture were treated and were divided into two groups according to different operation methods. In group A, 30 patients were fixed with memory alloy patellar concentrator (NiTi PC), 17 males and 13 females, aged 20 to 71 (39.4±9.9) years, including 19 cases of falling injury, 9 cases of traffic injury and 2 cases of sports injury. The time from injury to operation was 10 to 75 (33.1±7.8) hours; 30 cases in group B were fixed with tension band andcerclage, 15 males and 15 females, aged 21 to 76 (38.6±10.2) years, including 17 cases of falling injury, 12 cases of traffic injury and 1 case of smashing injury. The time from injury to operation was 10 to 91 (34.5±9.1) hours. The curative effects of two groups were observed and compared.@*RESULTS@#All 60 patients were followed up for 9 to 30 months. There was no significant difference in intraoperative bleeding, operation time, follow-up time and fracture healing time between the two groups. Six months after operation, according to the Bostman function score of knee joint:30 cases in group A, the total score was 28.6±4.7, of which 26 cases were excellent and 4 cases were good. The total score of 30 cases in group B was 25.5±4.4, of which 20 cases were excellent, 8 cases were good and 2 cases were poor. There were significant differences in Bostman total score and curative effect evaluation between two groups (@*CONCLUSION@#Memory alloy patellar concentrator is strong and reliable in the treatment of inferior patellar fracture. It can take early rehabilitation exercise after operation, with good recovery of joint function and range of motion and less complications.

Experimental research on application of hydrodynamic acoustic generator in extraction of Chinese medicine / 中国中药杂志

<p><b>OBJECTIVE</b>To study the hydrodynamic ultrasonic energy extraction technique for Chinese Medicine.</p><p><b>METHOD</b>The content of baicalin in Radix Scutellariae extracts and total flavones in Folium Ginkgo extracts were as indexes respectively and measured by high performance liquid chromatography. We investigated the hydrodynamic ultrasonic energy extraction process for the extraction of Radix Scutellariae and Folium Ginkgo respectively, and compared with refluxing method, decoction and ultrasonic extraction. With the content of the extracts as indexes, Compound prescriptions of Traditional Chinese Medicine were extracted by the hydrodynamic ultrasonic extraction and decoction extraction.</p><p><b>RESULT</b>The content of baicalin of hydrodynamic ultrasonic energy extracts was significant higher than other extracts. The content of Ginkgo leaves flavones in hydrodynamic ultrasonic energy extracts and ultrasonic extracts had no significant difference. Compared with decocting extracts, hydrodynamic ultrasonic energy extracts of TCM compound prescriptions content was higher greatly.</p><p><b>CONCLUSION</b>The hydrodynamic ultrasonic energy extraction process showed higher extraction rate of baicalin of radix scutellariae than traditional extraction methods. And it was beneficial to the dissolution of water-soluble constituents in compound prescriptions of TCM. The content of Ginkgo leaves flavones in the hydrodynamic ultrasonic energy extracts and ultrasonic extracts had no obvious difference.</p>