StudyDesign. An experimental investigation of a robot-assisted ultrasonic osteotome applied to vertebral cancellous bone.Objective. The aim of this study was to investigate the effect of various ultrasonic parameter settings on temperature in the drilling site and penetration time and determine the most suitable parameters for efficient and safe robot-based ultrasonically assisted bone drilling in spinal surgery Summary of Background Data. A robot-assisted ultrasonic osteotome device may be safe and effective for spinal drilling. Methods. Sixty specimens of bovine vertebral cancellous were randomly assigned to one of six groups, which varied by mode of ultrasonic vibration (L-T and L) and feed rate (one percent [0.8 mm/s], two percent [1.6 mm/s], and three pecent [2.4 mm/ s]). Maximum temperature in the drilling site and penetration time was recorded. Results. Maximum temperature in the drilling site decreased as output power increased for L-T and L modes, was significantly lower for L-T compared to L mode at each feed rate and power setting, was significantly different at feed rates of 1.6 mm/s versus 0.8 mm/s and 2.4 mm/s versus 0.8 mm/s for L-T mode at an output power of 60 W and 84 W, but was not influenced by feed rate for L mode. Penetration time did not significantly improve as output power increased for both L-T and L modes, was significantly decreased with increased feed rates, but was not significantly different between L-T and L modes. Conclusion. The optimal parameters for applying a robotassisted ultrasonic osteotome to vertebral cancellous bone are L-T mode, maximum output power of 120 W, and maximum feed rate of 2.4 mm/s.
We conclude that feelings of lacking control, expectations for negative events, beliefs of illness's chronic duration nature, and its linkage with aging were associated with poor medication adherence in elderly female patients with osteoporosis. Concerns about self-perception of aging need to be addressed in order to improve medication adherence.
Objective. To investigate the outcomes of patients with cervical spinal cord injury treated by surgery and their prognostic factors. Methods. We retrospectively analyzed 139 patients with cervical spinal cord injury treated by surgery at our hospital, who were admitted between January 2017 and December 2018. Depending on the Barthel index at last follow-up, the patients were divided into the recovery group ( n = 60 , Barthel index > 45 ) and the nonrecovery group ( n = 79 , Barthel index ≤ 45 ). General information of patients in the two groups was compared. The significant factors were further introduced into the logistic regression model. The poor prognostic factors of cervical spinal cord injury treated by surgery were analyzed, and specific nursing measures were taken. Results. There were significant differences in the duration of injury before admission, duration of injury before surgery, transportation and protection before admission, spinal canal invasion rate, and hormonal therapy within 8 h after injury between the patients achieving good postoperative recovery and those not ( P < 0.05 ). Logistic regression analysis showed that all the factors above were prognostic factors for cervical spinal cord injury treated surgically. Conclusion. The duration of injury before admission, duration of injury before surgery, transportation and protection before admission, spinal canal invasion rate, and hormonal therapy within 8 h after injury were prognostic factors of patients with cervical spinal cord injury treated by surgery. The following factors should be considered for favorable outcomes: spinal protection during transportation to hospital, timely hormonal shock therapy to delay injury progression, and timely surgery to relieve pain. The spine is composed of cervical, thoracic, lumbar, sacral, and caudal vertebrae.
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