ObjectiveArthroscopy is the most popular technique in posterior cruciate ligament (PCL) reconstruction surgery. However, no consensus on long-term outcomes after arthroscopic PCL reconstruction has been reached. This study was performed to evaluate the long-term outcomes after arthroscopic autologous hamstring or allogeneic tendon single-bundle reconstruction of the PCL.MethodsFifty-eight patients who underwent arthroscopic PCL reconstruction in Anhui, China from 2007 to 2009 were included. The follow-up period ranged from 56 to 83 months. During the follow-up, the Lysholm knee score and Tegner activity score were used to assess knee function. The KT-2000 arthrometer (MEDmetric Corp., San Diego, CA, USA) was used to assess the stability of the reconstructed PCL.ResultsThe mean Lysholm score, mean Tegner score, and mean forward and backward displacements were not significantly different between the final follow-up and 1 year after the surgery. Additionally, no significant differences were observed in any of the above-mentioned parameters between autologous and allogeneic reconstruction at the final follow-up.ConclusionBoth autologous and allogeneic reconstruction had few complications and satisfactory long-term outcomes.

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Background: To investigate the curative effects of improved non-absorbable high-strength fixation under arthroscopy on posterior cruciate ligament (PCL) avulsion fracture. Methods: A retrospective analysis was performed on 16 cases of PCL avulsion fracture in 15 patients who underwent high-strength suture fixation under arthroscopy from December 2017 to November 2019. According to the Meyers-McKeever classification, there were 2 cases of type II and 14 cases of type III. The fracture was reduced under arthroscopy, and knotted and fixed under the anterior and medial skin of the knee joint with high-strength sutures and a button plate. Regular follow-up of the knee joint healing and stability, the range of motion and the functional recovery of affected limb was conducted. The last follow-up was completed after the button plate was taken out. The Lysholm score was used to assess the recovery situation. Results: The button plate was taken out 6–9 months (average 7.2 months) after surgery. At the last follow-up, the fractures of the 15 patients were all healed. Moreover, six patients were positive for posterior drawer test within Grade 1 and the others were negative. All patients had no knee extension limitation, and the range of knee flexion reached more than 120°, with an average of (132.4 ± 3.6)°. The average Lysholm score was (93.1 ± 4.7). There were significant differences in knee flexion angle and Lysholm score at different time points after operation, p = 0.000. Conclusion: For the treatment of PCL avulsion fracture, the optimized arthroscopic high-strength suture fixation is easy to perform and repeat, and the fixation is strong and solid. The functions of the knee joint experienced good recovery after the surgery.

Background As a novel marker of insulin resistance, the ratio of triglyceride/high-density lipoprotein cholesterol (TG/HDL-C) has been recently reported to be related to the occurrence of coronary artery diseases. However, no research has been conducted to probe whether the TG/HDL-C ratio is associated with the occurrence of coronary microvascular disease (CMVD). Aim This study investigates the association between the TG/HDL-C ratio and the occurrence of CMVD. Methods This study included 175 patients diagnosed with CMVD in the Department of Cardiology of our hospital from October 2017 to October 2021 as the study group and 175 patients with no chest pain, no history of cardiovascular disease and drug use, and negative results of exercise treadmill testing as the non-CMVD group. The clinical data of the two groups were compared. In addition, the risk factors of CMVD were analyzed with logistic regression, and the efficacy of independent risk factors in predicting CMVD was analyzed with a receiver operating characteristic (ROC) curve. Results Compared with those in the non-CMVD group, the proportion of females, the incidence of hypertension and type 2 diabetes, the level of platelet count, TG, and C-reactive protein, and the ratio of TG/HDL-C were increased in the CMVD group, accompanied by decreased levels of albumin and HDL-C (P < 0.05). Logistic regression results revealed C-reactive protein (the area under the ROC curve [AUC] value: 0.754; 95% confidence interval [CI]: 0.681–0.827), sex (the AUC value: 0.651; 95%CI: 0.571–0.730), albumin (the AUC value: 0.722; 95%CI: 0.649–0.794), and TG/HDL-C ratio (the AUC value: 0.789; 95%CI: 0.718–0.859) as the independent risk factors of CMVD. Conclusion The TG/HDL-C ratio is an independent risk factor for the occurrence of CMVD.

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Background: Triglyceride/high-density lipoprotein (TG/HDL-C) is a novel marker of insulin resistance. Recently, it has been documented that this index is related to the occurrence of coronary artery diseases. However, no research has reported whether TG/HDL-C is associated with the occurrence of coronary microvascular disease (CMVD). Aim: This study set out to investigate the association betweentriglyceride/high-density lipoprotein cholesterol ratio(TG/HDL-C) and occurrence of coronary microvascular disease(CMVD). Methods: 175 patients with CMVD diagnosed in the department of cardiology in our hospital from October 2017 to October 2021 were selected as the study group and 175 patients without chest pain and history of cardiovascular disease who underwent physical examination in the medical examination center of our hospital were selected as the non-CMVD group. The clinical data were compared between the two groups. The risk factors of CMVD were analyzed using logistic regression, and the efficacy of independent risk factors in predicting CMVD was analyzed by a receiver operating characteristic (ROC) curve. Results: Compared with healthy group, the proportion of female, hypertension, type 2 diabetes, platelet count, total cholesterol, C-reactive protein and triglyceride/high-density lipoprotein ratio were increased in CMVD group (P < 0.05), but albumin level and high-density lipoprotein cholesterol were decreased (P < 0.05). Logistic regression analysis suggested that C-reactive protein, female, albumin and triglyceride/high-density lipoprotein were independent risk factors for CMVD, with the area under the curve of 0.754, 0.651, 0.722 and 0.789 the 95% confidence interval of (0.681-0.827), (0.571-0.730), (0.649-0.794) and (0.718-0.859) (P< 0.001), respectively. Conclusion: Triglyceride/high-density lipoprotein(TG/HDL-C) is an independent risk factor for occurrence of CMVD.