Assessment of Glenohumeral Subluxation in Poststroke Hemiplegia: Comparison Between Ultrasound and Fingerbreadth Palpation Methods

Praveen Kumar; Marianne Mardon; Michael Bradley; Selena Gray; Annette Swinkels

doi:10.2522/ptj.20130303

Figures

Figure 1.

Participants' standardized position for data collection: (A) fingerbreadth palpation method, (B) ultrasound method.

Figure 2.

Measurement of acromion–greater tuberosity (AGT) distance between the lateral border of the acromion (AC) and the nearest superior margin of the greater tuberosity (GT). Dotted caliper represents AGT distance. Sup=supraspinatus muscle.

Figure 3.

Receiver operating characteristic (ROC) curve with area under the receiver operating characteristic (AUROC) curve value of 0.73 (95% confidence interval=0.63–0.83). Curved line shows sensitivity and specificity varied around different cutoff points. Straight line indicates AUROC curve ≤0.5 (test not useful). Cutoff points ≥0.1 to ≥0.5 cm correspond to sensitivity and specificity. Optimal cutoff point of ≥0.2 cm indicates 68% sensitivity and 62% specificity. Diagonal segments produced by ties.

Figure 4.

Flow diagram illustrating comparison between the ultrasound method and the fingerbreadth palpation method based on cutoff point of ≥0.2 cm acromion-greater tuberosity difference. GHS=glenohumeral subluxation.

Tables

Table 1.

Demographic Characteristics of Patients With Stroke (n=105)

Table 2.

Sensitivity and Specificity With 95% CI for Ultrasound Method (AGT Distance Measurement Difference Between Affected and Unaffected Shoulders)^{^a}

↵^a 95% CI=95% confidence interval, AGT=acromion–greater tuberosity.

Supplementary Data

eTable

Files in this Data Supplement:

eTable (PDF) (16 KB) - This PDF contains the following eTable:
- eTable. AUROC Curve Statistics With 95% CI for Ultrasound Method Using Optimal Cutoff Point