Prevalence of Nontuberculous Mycobacterial Disease in the Changchun District of China.

Rates of nontuberculous mycobacterial (NTM) disease are rapidly increasing throughout the globe. NTM disease, as an emerging infectious disease, it is very important to summarize and analyze the prevalence and main pathogenic bacteria. However, there is no relevant report in Changchun district. In the present report, 8765 clinical samples were collected between January 2017 and December 2019, we reviewed patient electronic medical records and thereby summarized the causative species associated with NTM disease in the Changchun district of China. Of 8765 clinical samples, 1987 samples yielded positive cultures. Of these cultures, 1868 (94.01%) were Mycobacterium tuberculosis, 37 (1.86%) were Mycobacterium bovis, and 82 (4.13%) were NTM. A total of 84 NTM strains were isolated from these 82 cultures, with Mycobacterium intracellulare being the most prevalent isolate therein (44.05%). NTM infection status was associated with location of residence [OR (95% CI) 3.92 (1.20-12.8)]. No apparent correlations were observed between cultured NTM species and patient clinical symptoms. Bronchiectasis was the most prevalent radiographic finding associated with NTM cases [OR (95% CI) 9.00 (1.27-63.89)]. In summary, NTM disease is a growing threat to global public health, and researchers and clinicians should thus focus on the appropriate identification of NTM species and the differentiation between NTM infections and tuberculosis.

CEMENTLESS TOTAL HIP ARTHROPLASTY FOR TREATMENT OF Crowe TYPE Ⅲ DEVELOPMENTAL DYSPLASIA OF HIP IN ADULTS / 中国修复重建外科杂志

OBJECTIVE: To investigate the value of cementless total hip arthroplasty (THA) for the treatment of Crowe type Ⅲ developmental dysplasia of hip (DDH) in adults.

Different Prostheses in Artificial Hip Replacement for Osteoporotic Femoral Neck Fracture in Elderly Patients / 昆明医科大学学报

Objective To evaluate the early effect and safety of artificial hip replacement for treating senile osteoporosis femoral neck fractures with different prostheses choice. Methods From January 2006 to April 2014, 387 patients with senile osteoporotic femoral neck fractures received artificial hip replacement. Their average age was 65 to 98 years old,with the average of 76.9 years old. Four prostheses were used in the artificial hip replacement, including 107 cases of biological total hip,94 cases of bone cement type total hip,104 cases of biotype artificial femoral head,and 82 cases bone cement artificial femoral head. We compared the operation time,bleeding amount, postoperative ambulation time,postoperative complication rate among the four prostheses. Results The biological hip replacement were superior to bone cement type in the operation time(50±10.3 min vs 61±11.5 min), bleeding amount(149±27.7 ml vs 205±47.3 ml)and postoperative complications(21% vs 38%),with statistical significant differences(P < 0.05). Other observations showed no statistically significance. Conclusion The biotype artificial joint replacement is applicable to the younger patients with thick bone cortex and long life expectancy,while the bone cement artificial joint replacement is appropriate for weak senile patients with thin bone cortex.