Ten years retrospective study of using primary microsurgery technology to treat patients with severe lower extremities injury / 中华显微外科杂志

Objective To clarify the role of microsurgery in limb salvage procedure and its efficiency in long-term functional results through a retrospective review of patients who sustained severe injury of lower extremities and had been treated Shanghai 6th people's hospital, in recent 10 years. Methods Patients who sustained severe injury of lower extremities and treated with microsurgical techniques in January, 2006 to January, 2016 were studied. Patients' general information, classification of open fracture, and MESS were noted. The enrolled patients were divided into two groups (group A: primary microsurgical reconstruction;group B: non-microsurgical reconstruction ) according to whether primary microsurgical reconstruction was performed or not. Each group were also further divided into sub-group according to preoperative MESS (MESS<7 and MESS≥7). The reconstruction methods, hospitalization days, op-eration times, postoperative complications, as well as the SIP were then recorded for each groups. The differences of these data among each groups were analyzed and compared. Results The main objection was patient with Gustilo grade III open fracture, totally 548 patients were admitted, with 312 males and 236 females. The main age was 35.6 years old. The main etiology was road traffic accident (79.7％). There were 211 patients (38.5％) in group A, and 337 patients (61.5％) in group B. In group A, there were 37 patients in subgroup one (MESS<7), and 174 patients in sub-group two (MESS≥7). The rate of delayed amputation was 2.8％, while the complication rate was 11.8％. In group B, there were 181 patients in subgroup one(MESS<7), and 156 patients in subgroup two (MESS≥7). The rate of delayed amputation was 4.0％, while the complication rate was 13.3％. In long-term survey, the average VAS score of group B was higher than that of group A, but no significant difference was noted. The average VAS scores in 2 year postopera-tively in the subgroups (MESS≥7) were higher than those in the other subgroups (MESS<7). The results of SIP scores were similar with VAS scores in two groups. Conclusion The techniques of microsurgery has been promoting the successful rates and outcomes for limb salvage procedure over the recent decades. Meanwhile, the current evaluating system for se-vere limb injury needs to be updated to meet the demands of ever-developing limb salvage techniques.

Analysis of lower limb injuries in collegiate American football team: a 2-year prospective study / 体力科学

Collegiate American football injuries for two year seasons in Japanese Kansai Division I team were analyzed using injury rates (IR) per 1000 athlete-exposures (1000AE: one athlete-exposure was defined as a player participating in one game or one practice.), especially focusing on lower limb injuries. The overall game injury rate (GIR: 38.3) was significantly higher than practice injury rate (PIR: 13.1) (X²=12.355, p < 0.05). The difference between GIR in 2008 season (50.8) and in 2007 season (25.7) was significant (X²=8.235, p < 0.05). The lower extremity injuries approximately occupied 60% of all injuries, especially GIRs of both ankle inversion sprains (3.8) and anterior cruciate ligament (ACL: 3.3) injuries being much higher. PIR in this study was higher than the rates of collegiate American football teams in the U.S.A., especially PIRs of knee ligament injuries (ACL and medial collateral ligament injuries) and ankle sprains (inversion and eversion sprains) being much higher. Regarding the occurrence of injury, GIR with contact in ACL injuries (2.8) and GIR without contact in ankle inversion sprains (2.4) were the highest. It is also necessary to change practice plans and circumstances so that the PIR of knee and ankle injuries could be reduced. Research is needed on injury prevention for knee and ankle injuries in the games and practices.

A study of lower limb injuries in aerobic dance instructors / 体力科学

The purpose of this study was to investigate the injurious influence of aerobic dancing on the lower limbs injuries. Subjects were personally interviewed about exercise hours and the intensity of their classes, together with experience of injury, and their body configurations, alignments, ranges of motion, and muscular strengths were measured. EMG during aerobic dance exercise was measured in subjects with knee Q angles over and under 20 degrees.<BR>The incidence of lower limb injury was 64.3%, and the most frequent injury was shin splint. The injured individuals had significantly more high-intensity classes than normal. As to body configuration, the width in patella per femur was significantly lower and the value of patellar ligament per height was significantly higher in the injured than in the normal subjects. The range of motion of hip external rotation in the injured was significantly smaller than that in the normal subjects. EMG discharge of the vastus medialis in the injured with a knee Q angle of over 20 degrees was markedly greater than that in normal subjects with an angle of less than 20 degrees.