MRI study of the movement of popliteal artery during knee flexion
- VernacularTitle:膝关节屈曲时腘动脉移位的MRI研究
- Author:
Xiaopeng GENG
;
Baicheng CHEN
;
Xia WANG
- Publication Type:Journal Article
- Keywords:
Movement;
Popliteal artery;
Knee;
Magnetic resonance imaging
- From:
Orthopedic Journal of China
2006;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To clarify the precise displacement of the popliteal artery(PA) during knee flexion using magnetic resonance imaging(MRI).[Method]MRI was used in 16 knees at 0? and 90? of flexion to measure the distance between the popliteal artery and the posterior tibial cortex(bone to artery distance,BAD)at two levels corresponding to the levels of osteotomy in total knee arthroplasty(TKR) and in high tibial osteotomy(HTO).The results were analysed using paired-samples t test.[Result]At the level of TKR(0.5 to 1 cm below the tibial articular surface),the mean posterior movement of BAD from extension to 90? of flexion was 1.8 mm(-2～+5 mm) with a statistical significance(P=0.005).At the level of HTO(1.5 to 2 cm below the tibial articular surface),the mean change in BAD 1.4mm(-2～+4mm)was also statistically significant(P=(0.005)).At the two levels,the artery moved toward the tibia in 2 cases,respectively.[Conclusion]Knee flexion may be considered to be a safer position,still there is possible potential popliteal artery injury.
