抄録
In treatment of femoral neck fracture we have sometimes experienced complications of non-union and late segmental collapse (LSC) due to the anatomical characteristics. Study was made on 29 cases who were treated by osteosynthesis at our department and on whom follow-up observation could be made.
The subjects of the present study were 29 cases whose age at time of surgery ranged from 22 to 89 years with a mean of 57.8 years. When classified by Garden's criterion, there were 1 case in stage 1, 15 cases in stage 2, 7 cases in stage 3 and 6 cases in stage 4. These cases were examined radiologically for the presence of non-union and LSC.
Complication of non-union was observed in 1 case and LSC in 4 cases. In particular, LSC was seen in 14.3% of the cases of stage 3 and in 50% of the cases of stage 4. Furthermore, LSC was found in 5.3% of the cases injured by toppling, in 25% of the cases who fell from high place, and in 33% of the cases injured in traffic accident.
Stage 3 and stage 4 of Garden's criterion and high energy trauma caused by falling from high place and traffic accident can be considered to be risk factors of complication of LSC in femoral neck fracture.
