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BACKGROUND: Early rehabilitation intervention is beneficial for the functional recovery after total knee arthroplasty. Mobilization with movement can alleviate the postoperative pain and improve the knee function to maximal extent. OBJECTIVE: To explore the effect of mobilization with movement on the early dysfunction and joint function after posterior stabilized total knee arthroplasty. METHODS: Seventy patients with fixed-bearing posterior stabilized total knee arthroplasty from May 2017 to April 2020 in Shunde Hospital of Southern Medical University were randomly divided into control group and treatment group. The patients in the control group were given rapid rehabilitation intervention, while those in the treatment group were subjected to mobilization with movement combined with rapid rehabilitation intervention. The western Ontario and McMaster universities osteoarthritis index and the hospital for special knee surgery scores were compared between the two groups 1 day, 2 and 4 weeks after total knee arthroplasty. RESULTS AND CONCLUSION: (1) At 2 and 4 weeks postoperatively, the indicators of the two groups of patients were significantly improved compared with those 1 day after treatment, and the difference was significant (P < 0.05). All indicators except muscle strength of the hospital for special knee surgery scores were significantly different in both groups at 2 and 4 weeks after total knee arthroplasty (P < 0.05). (2) At 2 and 4 weeks postoperatively, the pain, function, range of motion, stability, flexion deformity and total scores of the hospital for special knee surgery in the treatment group were significantly higher than those in the control group. Western Ontario and McMaster universities osteoarthritis index and the reduction project scores of the hospital for special knee surgery scores were significantly lower in the treatment group than those in the control group (P < 0.05). (3) The results suggest that mobilization with movement combined with rapid rehabilitation intervention can improve the functional recovery at early phase after total knee arthroplasty. [ABSTRACT FROM AUTHOR]

BACKGROUND: The cases of knee valgus deformity are rare and the operation is difficult. At present, the technical specifications of osteotomy and soft tissue balance at home and abroad are not uniform. OBJECTIVE: To investigate the curative effect of total knee arthroplasty in the treatment of knee valgus deformity. METHODS: A retrospective analysis of patients with primary knee arthroplasty for knee valgus admitted to the First Affiliated Hospital of Guangzhou University of Chinese Medicine from January 2010 to August 2016 was performed. Individualized soft tissue release, precise osteotomy, appropriate prosthesis, and surgical approach were selected according to the patient’s condition. Western Ontario and McMaster Universities Osteoarthritis Index, knee society score, femorotibial angle, knee motion range, and EQ-5D scale score were evaluated before and 3 years after operation. X-ray films were reviewed regularly to observe whether the knee joint was loose or displaced. Survival rate and complications were recorded. RESULTS AND CONCLUSION: (1) A total of 32 patients (32 knees) were enrolled. The follow-up period was 3-9 years. (2) The clinical and functional scores of knee society during the 3-year follow-up were significantly higher than those before surgery, and the differences were statistically significant (P < 0.05). There were no differences in clinical and functional scores of knee society in different deformity groups before surgery. The clinical and functional scores of knee society in different deformity groups at 3 years after operation were significantly different (P < 0.05). The mild deformity group and the moderate deformity group had higher scores than the severe deformity group. (3) The EQ-5D at 3 years after surgery was significantly increased than that before surgery, and the difference was statistically significant (P < 0.05). There were no differences in EQ-5D in different deformity groups before surgery. There were statistically significant differences in EQ-5D in different deformity groups at 3 years after operation. The mild deformity group and the moderate deformity group had better improvement than the severe deformity group. (4) Western Ontario and McMaster Universities Osteoarthritis Index at 3 years after surgery was significantly lower than that before surgery, and the difference was statistically significant (P < 0.05). There were no differences in Western Ontario and McMaster Universities Osteoarthritis Index between different deformity groups before surgery. There were statistically significant differences in Western Ontario and McMaster Universities Osteoarthritis Index in different deformity groups after surgery (P < 0.05). The mild deformity group and the moderate deformity group had lower index than the severe deformity group. (5) Knee motion range increased significantly after replacement. Compared with preoperatively, the difference was statistically significant (P < 0.05). There was no difference in knee motion range between different deformity groups after surgery (P > 0.05). (6) During the follow-up, the knee prosthesis was well fixed, no loosening or dislocation, no obvious deep vein thrombosis, no prosthesis infection. The survival rate of the prosthesis was 100%. (7) Under the guidance of individualized soft tissue balance technique and precise osteotomy, the selection of appropriate knee prosthesis for total knee arthroplasty in the treatment of knee valgus deformity is safe and effective, and the medium- and long-term results are satisfactory. [ABSTRACT FROM AUTHOR]

The Mackenzie River bridges are part of the TransCanada Highway realignment near Thunder Bay, ON, Canada. The project consists of twin two-lane bridges, each with three spans, for a total length of 180 m (590 ft). The bridges cross a deep gorge of the Mackenzie River using variable depth, continuous steel plate girders with full-depth precast concrete deck panels that are lightly prestressed and extend the full width of the bridge. Precast concrete approach slabs and 130 precast concrete deck panels (2.99 m [9.6 ft] wide × 14.5 m [47.6 ft] long × 225 mm [9 in.] thick) were connected at transverse joints and attached to the steel girders through shear pockets and haunches using a total of 175 m3 (229 yd3) field-cast ultra-high-performance concrete (UHPC). [ABSTRACT FROM AUTHOR]