Restoration of the axial alignment of the lower extremity during operation of fracture of tibial plateau and curative effect analysis / 中国矫形外科杂志

ABSTRACT

[Objective]To investigate the restoration of the axial alignment of the lower extremity during operation for fracture of tibia plateau and to assess the curative effect.[Method]A retrospective analysis of 45 cases of fracture of tibial plateau were conducted from May 2000 to June 2005,25 male cases and 20 female,mean age were 45.3.The type of fracture3 cases were Schatzker I,10 were type Ⅰ,19 were type Ⅲ,6 were type Ⅳ,5 were type Ⅴ,2 were type Ⅵ.All cases were treated with open reduction,bone graft and internal-fixation with plate and screw under arthroscopy-assisted,and the normal axial alignment of the lower extremity was restored.The restoration standard was in accordance with the uninjured side limb.The way of measurementthe axial line from anterior superior iliac to interdigit of the first and second toe was done,then,the perpendicular distance from the center of patella to this line was calculated,and compared the data with uninjured side limb's.[Result]Forty cases were followed up,from 6 months to 24 months,average 15 months,according to the Rasmussen knee score standard,24 were excellent,11 were good,3 were fair and 2 were poor.The satisfactory rate was 87.5%,the restoration of knee function were close correlated with whether the line normal or not,there were abnormal lines recurrence in some cases,the main causes were(1)Meniscus to be cut excessive to the loading redistribution in joint;(2)The reduced articular surface collapsed,again due to the affected limb weight loading too early;(3)Fractures were too complicated to be compress fixed with common buttress plate,resulted in displace fracture.[Conclusion]It is very important that the axial alignment of the lower extremity to be corrected during operation to the injured knee function restoration after operation,and the causes result in the axial line abnormal above-mentioned should be considered thoroughly,at the same time,the corresponding measures should be taken.