Treatment of coronal shear fracture of the distal end of the humerus by the olecranon osteotomy approach / 中国骨伤

<p><b>OBJECTIVE</b>To explore the effectiveness of olecranon osteotomy approach for the treatment of coronal shear fracture of the distal end of the humerus.</p><p><b>METHODS</b>A retrospective analysis was made on the clinical data of 34 patients with the coronal shear fracture of the distal end of the humerus treated by the olecranon osteotomy approach from January 2005 to January 2013. Of 34 cases, there were 15 boys and 19 girls, aged from 17 years to 84 years (mean, 54.9±10.2 years); 18 patients had fractures on the left and 16 patients had fractures on the right. Fractures were classified according to the Bryan and Morrey classification united Mckee classification: type Iinjuries occurred in 10 cases, type IIinjuries in 5 cases, type III injuries in 10 cases and type IV injuries in 9 cases. The Mayo elbow functional scores were evaluated for analysis.</p><p><b>RESULTS</b>All the patients were followed up, and the duration ranged from 15 to 96 months, with a mean of (35.1±7.2) months. Average arc of motion was (132.1±11.2)° in flexion and (4.6±1.9)° in extension. The average Mayo score was 85.9±6.3(73 to 94 scores). Thirteen patients got an excellent result, 15 good and 6 poor. The average Mayo score was 88.6±3.7 in type Iinjuries, 85.8±4.6 in type IIinjuries, 81.8±5.8 in type III injuries and 87.5±9.1 in type IV injuries. There were no significant differences in outcomes.</p><p><b>CONCLUSIONS</b>The treatment for the coronal shear fracture of the distal end of the humerus by the olecranon osteotomy approach can achieve the satisfactory curative effect, maintain the reduction and improve the elbow function.</p>

Comparison of clinical effect on locking plate for proximal humeral fracture with or without application of inferomedial screws / 中国骨伤

<p><b>OBJECTIVE</b>To compare clinical outcomes of locking plate for proximal humeral fracture whether application of inferomedial screws.</p><p><b>METHODS</b>From January 2012 to July 2013, 46 patients with proximal humeral fracture underwent locking plates were retrospectively analyzed. There were 25 males and 21 females aged from 29 to 80 years old with an average of 55.1 years old. Among them, 25 patients were treated with inferomedial screws (support group), including 13 males and 12 females aged from 38 to 80 years old with an average of (55.8 ± 11.8) years old; 8 cases were part two fracture,10 cases were part three fracture and 7 cases were part four fracture according to Neer classification. Twenty-one patients were treated without inferomedial screws (non-support group), including 12 males and 9 females aged from 29 to 79 years old with an average of (54.2 ± 14.8)years old; 6 cases were part two fracture, 9 cases were part three fracture and 6 cases were part four fracture according to Neer classification. Operative time, fracture healing time and complications were observed and compared, Neer scoring of shoulder joint were used to evaluate clinical effect.</p><p><b>RESULTS</b>All patients were followed up from 12 to 41 months with an average of 15.6 months. Operative time and fracture healing time in support group was (1.6 ± 0.4) h and (3.0 ± 0.6) months, and (1.5 ± 0.4) h and (3.1 ± 0.6) months in non-support group, while there was no statistical difference in operative time and fracture healing time between two groups. There was significant differences in Neer score between support group (89.7± 4.9) and non-support group (83.1 ± 7.1). No complication occurred in support group,while 4 cases occurred complications in non-support group.</p><p><b>CONCLUSION</b>Locking plate with inferomedial screws for proximal humeral fracture has advantages of stable fixation, less complications, quick recovery of function and satisfied clinical effect.</p>

The changes of three endogenous hormones during flower bud differentiation of Schisandga chinensis / 中国中药杂志

<p><b>OBJECTIVE</b>To reveal the relation between endogenous hormones and the flower bud differentiation in Schisandga chinensis.</p><p><b>METHOD</b>Top buds of extremely short branch and axillary buds of long branch in the same plant of S. chinensis were used as material and the contents of endogenous hormones were measured during different periods of the flower bud differentiation with HPLC.</p><p><b>RESULT</b>The result showed that flower bud differentiation and the formation of female flower were inhibited by high concentration of GA3 and were promoted by high concentration of ABA or ZT. Low ratio of GA3/ABA has the same result.</p><p><b>CONCLUSION</b>There was a correlation between endogenous hormones and the flower bud differentiation of S. chinensis.</p>