The value of ultrasonography in the diagnosis of piriformis syndrome
10.3760/cma.j.issn.1004-4477.2016.01.014
- VernacularTitle:梨状肌综合征的超声诊断价值
- Author:
Ting HE
;
Shangyong ZHU
;
Ruochuan LIU
;
Yong GAO
;
Yinhong YANG
;
Yinfeng PENG
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Piriformis muscle syndrome;
Sciatic nerve
- From:
Chinese Journal of Ultrasonography
2016;(1):61-64
- CountryChina
- Language:Chinese
-
Abstract:
Objective To discuss the diagnostic value of ultrasonography in piriformis syndrome . Methods Ultrasonography was performed in thirty‐eight patients with unilateral piriformis syndrome and forty healthy volunteers . The morphological structures and the internal echoes of their bilateral piriformises and sciatic nerves were observed and their thicknesses were measured . These parameters of the patients and voluteers were recorded and compared . Results The ultrasonographic images of piriformis and sciatic nerve of the healthy voluteers showed no abnormal change . The thickness difference of their bilateral piriformises and sciatic nerves had no statistical significance ( P > 0 .05 ) . The ultrasonography image of the morphological structure and the internal echo of the sick side piriformis and sciatic nerve of the patients with piriformis syndrome showed a change ,that the sick side piriformis was significantly thicker than the healthy side piriformis [(25 .74 ± 3 .12) mm vs (22 .48 ± 2 .60) mm , P < 0 .05] . The area under the operator characteristic curve ( AUC ) for the thickness difference of bilateral piriformises in diagnosing piriformis syndrome was 0 .896 ,with the optimal cut‐off value of 2 .15 mm . However ,the thickness difference of their bilateral sciatic nerves had no statistical significance ( P >0 .05) . Conclusions Ultrasonography can show piriformis and sciatic nerve clearly . The ultrasonographic images and the thickness difference of the bilateral piriformises is helpful to diagnose piriformis syndrome ,and can provide more informations for clinic .
