ObjectiveTo observe the characteristics of gait symmetry and its influencing factors in patients with incomplete spinal cord injury (ISCI). MethodsFrom May, 2018 to November, 2021, 34 patients with ISCI in Beijing Bo'ai Hospital were divided into symmetrical injury of lower limb (SI) group and asymmetrical injury of lower limb (ASI) group according to the lower extremities motor score (LEMS). Three dimensional motion acquisition system and plantar pressure acquisition system were used for gait test. The symmetry indexes of step length, stance time and swing time were caculated. ResultsThe symmetry indexes of step length, stance time and swing time were significant lower in SI group than in ASI group (|t| > 2.619, P < 0.01). Stance time and swing time significantly correlated to the difference of bilateral LEMS in ASI group (r > 0.468, P < 0.01). Discriminant analysis showed that gait parameter equations were different for patients with different symmetry of lower limb injuries. ConclusionThe symmetry of lower limb motor function impacts gait symmetry for patients with ISCI, especially the difference value of bilateral total LEMS. Gait parameters can be used to determine the symmetry of lower limb injury in patients with ISCI.

ObjectiveTo explore the application of Brain and Spinal Injury Center (BASIC) score in evaluation of traumatic cervical spinal cord injury. MethodsFrom January, 2015 to December, 2021, 175 patients with traumatic cervical spinal cord injury in Beijing Bo'ai Hospital were analyzed. Gender, age, cause of injury, injury mechanism and American Spinal Injury Association Impairment Scale (AIS) grade were collected. The sagittal and axial T₂ weighted imaging (T₂WI) of the patients were evaluated with BASIC score, single/multi-segment injury, and with/without intramedullary hemorrhage. According to the injury mechanism, the patients were divided into two groups: with fracture/fracture dislocation (n = 92) and without fracture and dislocation (n = 83). The baseline demographic indicators and T₂WI evaluation indicators were compared between the two groups, and the relationship between AIS grade and BASIC score, intramedullary hemorrhage, single/multi-segment injury were investigated. ResultsThere were significant differences in gender, age and AIS grade, BASIC score, and the rates of inntramedullary hemorrhage and single segment injury of T₂WI between two groups (t = -10.276, χ² > 8.703, P < 0.01); however, no difference was found in the cause of injury (P > 0.05). The AIS grade was significantly correlated with the BASIC score (r = 0.790, P < 0.001). There was significant difference in AIS grade between intramedullary hemorrhage or not, and single/multi-segment injury (χ² > 5.516, P < 0.05). ConclusionThe BASIC score of T₂WI is a predictor of the severity of spinal cord injury after traumatic cervical spinal cord injury, and is different with the injury mechanisms.

ObjectivesTo introduce the progress in neurological classification of spinal cord injury (SCI) with complications. MethodsThe literatures in recent ten years were reviewed and summarized. ResultsIn January, 2022, a new neurological classification of SCI with complications in the International Standards for Neurological Classification of SCI (ISNCSCI) was published by the focus group of the American Spinal Injury Association (ASIA) International Standards Committee, with the extended "*"-tag concept, sensory and motor examination results impacted by SCI complication above, at, or below the neurological level of injury (NLI) could be consistently documented, scored, and classified. ConclusionThis new taxonomy in neurological classification of SCI with complications has overcome the shortcomings of the previous ISNCSCI versions and benefits the accuracy of ISNCSCI classifications, it could be tried in the clinical application.

In this paper, the domestic and international demand and development trend of clinical diagnostic radionuclides are analyzed, and the medium and high-energy cyclotrons, adequate and systematic facilities, and preparation techniques required for the production of medical radionuclides based on solid targets are introduced. This paper focuses on the research and development carried out by some important medical institutions and scientific research institutes in China over the years in the aspects of medium and high-energy cyclotrons, beam transmission lines, high-power irradiation target stations and new medical isotope production processes etc. It also looks forward to some new directions for the development of medical radionuclides in China during the 14th Five-Year Plan period.

ObjectiveTo investigate the changes of bone mineral density of distal femur and proximal tibia in patients with spinal cord injury. MethodsNine inpatients with spinal cord injury in Beijing Bo'ai Hospital for rehabilitation from November, 2018 to January, 2021 were recruited. The bone mineral density of distal femur, proximal tibia, total hip and femoral neck at admission and six months after admission was measured. ResultsCompared with the results of admission, the bone mineral density of distal femur, proximal tibia, total hip and femoral neck decreased significantly six months after admission (∣Z∣ > 2.265, P < 0.01). The percentage of decreased bone mineral density in the femoral neck was inversely correlated with the lower extremity movement score at the second measurement (r = -0.515, P = 0.035). ConclusionWithin one year after the onset of spinal cord injury, the bone mineral density of distal femur and proximal tibia decreases.

Objective To explore the prevention for hip dysplasia after pediatric spinal cord injury. Methods From March, 2017, the families of 47 children with spinal cord injury accepted education for preventing improper posture of sitting and sleeping and other interventions, and 23 of them were followed up for three months or more. Results New hip dislocation was found in one child, and 18 children developed almost normally in hip, the other four children with old hip dislocation did not worsen.Conclusion Intervention in time may prevent the hip dislocation in children with spinal cord injury.

As the manual muscle testing is not sensitive enough to reflect the change of muscle strength, more and more people begin to use isokinetic dynamometry and handheld dynamometer for quantitative tests of muscle strength measurement. This paper briefly introduced the history of clinical approaches of muscle strength measurement, compared the advantages and disadvantages of various quantitative mus-cle strength testing, on which the specific techniques of clinical muscle strength measurement were discussed.

Objective To explore effect of pre-programmed guidance of functional exercise on exercise compliance and accuracy of patients after lumbar surgery.Methods From January to March 2016, 60 patients who had undergone the surgery of lumbar spine internal fixation were selected as the research object. All patients were divided into intervention group and control group randomly, 30 patients in each group. Patients in the control group underwent routine postoperative functional exercises. Patients in the intervention group received preoperative functional exercise instruction before 2 days. According to the self-designed questionnaire, we evaluated the compliance and accuracy of functional exercises of the two groups by asking, checking and demonstrating.Results At first day after operation, the proficiency on ankle pump exercises and straight-leg-raising movement showed no significant difference between two groups (P>0.05); However, on supine siding leg movement to right-left, compared with the control group, the intervention group were significantly better (Z=-5.100,P<0.001). At first day after removing wound drains, the proficiency on ankle pump exercises and raising buttock with five positions showed no significant difference between two groups (P>0.05), but on straight-leg-raising movement (Z=-2.316,P=0.021) , supine siding leg movement to right-left (Z= -4.238,P<0.001), lateral siding leg movement to front-back (Z=-3.027,P=0.002) and lateral straight-leg-raising movement (Z=-3.027,P=0.002), the intervention group was significantly better than the control group. Moreover, as far as adherence of exercise, patients in the intervention group were obvious better (Z= -2.156,P=0.031).Conclusions The pre-programmed guidance of functional exercise can improve the patient's awareness and confidence of functional exercise on rehabilitation, reduce the patients' psychological anxiety, so as to improve the compliance and the correct rate of functional exercise, promote their recovery. It also can save time for propaganda, improve work efficiency.

Objective To retrospectively analyze the lower extremity deep vein thrombosis prevention in patients with spinal cord injury (SCI). Methods A total of 115 SCI patients in our department from April to May, 2015 were included. The clinical symptoms, lower limb deep vein ultrasonic testing, laboratory examination were collected to analyze the occurrence, prevention measures, the thrombus location and management of deep venous thrombosis (DVT) in lower limbs. Results Forty-three patients had thromboprophylaxis in other hospitals before admission, and 105 patients in our department after admission, in which, nine cases were with clinical symptoms in other hospitals and three cases in our department. No pulmonary embolism occurred in them. There was no significant difference in most laboratory index-es between patients with DVT and without DVT in lower limbs (P>0.05). Five patients were with DVT in lower limbs in 43 patients who had thromboprophylaxis, and four cases in 72 patients who did not have thromboprophylaxis. No relationship was found between thrombo-prophylaxis and DVT in lower limbs (χ2=0.663, P=0.415). Five patients were with DVT in lower limbs in 53 patients with complete SCI, and four cases in 59 patients with incomplete SCI. No relationship was found between the severity of SCI and DVT in lower limbs in other hospitals (χ2=0.028, P=0.867). Conclusion DVT in lower limbs could be also occurred in patients who accepted thromboprophylaxis. Labo-ratory indexes are inadequate for the prediction and diagnosis specificity of DVT in lower limbs.

Abastract:Objective To explore the pathogenic bacteria distribution and drug resistance of otitis media in preschool children.Methods Children with otitis media during January 2012 to December 2015 were selected. Ear discharge was taken for common pathogenic bacteria isolation and culture. The drug sensitivity was tested.Results In 200 strains of pathogenic bacteria isolated, 156 (78.0%) strains were Gram-positive cocci, mainly beingStreptococcus pneumoniae,Staphylococcus aureus; 38 (19.0%) strains were Gram-negative bacilli, mainly beingPseudomonas aeruginosa; 6 (3.0%) strains were monilia. Streptococcus pneumoniae had high rate of resistance to erythromycin, tetracycline, clindamycin and sulfamethoxazole, and low rate of resistance to penicillin.Staphylococcus aureus had high rate of resistance to penicillin, and had not found resistance to vancomycin, linezolid and daptomycin. In routine monitoring of 12 kinds of antimicrobial agents, the overall drug resistance of Pseudomonas aeruginosa was low, and the resistance rates of each antimicrobial agent was less than 32%.Conclusion The common pathogens of otitis media in preschool children wereStreptococcus pneumoniae,Staphylococcus aureus, and Pseudomonas aeruginosa. However, different bacteria had different drug resistance. Thus, rational use of antibacterial drugs is the key to control infections.