ABSTRACT
Objective To evaluate the diagnosis of frozen shoulder with the coracohumeral ligament on the coronal oblique plane with MRI.Methods There were 60 patients(120 shoulder joints)in control group,with 30 males and 30 females,the mean age was 50.5 years old.There were 72 shoulder joints in 72 patients of frozen shoulder group(50 femles and 22 males with a mean age of 53.5 years)with clini-cal evidence and MR imaging evidence of frozen shoulder.These were prospectively analyzed to identify the CHL visualization rate and meas-ure the maximum thickness of the CHL.Results The CHL visualization rate on the coronal oblique plane in the control group was 86.7%(104 /120),and the frozen shoulder group was 87.5%(63 /72),the difference was not significant(P >0.05).The CHL visualization rate on the axial view in the frozen shoulder group was 19.4%(14 /72)and the control group was 24.2%(29 /120),the difference was not signifi-cant(P >0.05).The CHL thickness on the coronal oblique plane (n =63)in the patients with frozen shoulder was (4.37 ±1.71)mm, which was significantly greater than (2.84 ±0.79)mm ofpatients in the control group(n =104),the difference was significant(P <0.001). The CHL thickness on the axial plane(n =14)in the patients with frozen shoulder was (3.93 ±1.49)mm,which was significantly greater than (2.29 ±0.65)mm of patients in the control group(n =29),the difference was significant(P <0.001).Conclusion A thickened CHL is highly suggestive of frozen shoulder,which is 4.37 mm on the coronal oblique plane.
ABSTRACT
Objective To explore the morphologic features of the biceps reflection pulley through the comparative study of the thin sec -tional anatomy based on the Chinese Visible Human ( CVH) and MRI sectional anatomy of the biceps reflection pulley ,and to provide ima-ging anatomic data for the diagnosis of lesions .Methods The thin slices of sagittal oblique plane and coronal oblique plane by visualization -al reconstruction based on 5 data set of the Chinese visible human ( CVH) were compared with the corresponding MR images from 20 shoulder joints of the normal volunteer individuals with routine MRI ,5 shoulders without abnormalities with MR arthrography .The detailed sectional a-natomy structure of the the biceps reflection pulley was marked from the CVH ,routine MRI and MR arthrography one by one with Photoshop CS2 software.Results The main three components of the biceps reflection pulley including the coracohumeral ligament (CHL),the superior glenohumeral ligament ( SGHL) ,and the long head of the biceps tendon ( LBT) were markedly displayed on the CVH and MRI .The CHL was markedly displayed on the sagittal oblique , using plain MRI .The SGHL was markedly displayed on the CVH , especially in the transverse plane.The LBT was markedly displayed on the CVH ,especially in the coronal oblique plane parallel to the LBT .The biceps reflection pulley was markedly displayed on the sagittal oblique plane with CVH and MR arthrography .The SGHL was perpendicular to the CHL , with T-shaped link anterior to the LBT on the sagittal oblique plane .Conclusion It is complementary for MRI and CVH displaying the components of the biceps reflection pulley .The sagittal oblique plane is the best position for displaying the components and adjacent structures of the bi -ceps reflection pulley ,which provide helpful position mark for the diagnosis of the lesions in the rotator interval .