Quadrilateral Space Syndrome: Case Report and Review of the Literature

Quadrilateral Space Syndrome

“…3,16 This may be experienced before, during, and after physical exertion. There is often isolated tenderness in response to palpation over the quadrilateral space, which is very close to the posterior rotator cuff muscles, teres minor, and infraspinatus (Figure 2).…”

“…16 In chronic cases, the lesion must be distal to the quadrilateral space when the posterior deltoid and teres minor are not affected. 18 We have commonly seen a thickened band along the border between the teres minor and infraspinatus muscle tendons in baseball pitchers.…”

Quadrilateral Space Syndrome

“…16 Cahill 7 described four cardinal features of QSS: (a) poorly localized shoulder pain, (b) nondermatomal distribution of paresthesia, (c) discrete point tenderness in the quadrilateral space, and (d) a positive arteriogram finding with the affected shoulder in a position of abduction and external rotation. A high index of suspicion should be maintained for this unusual diagnosis in the overhead athlete who presents with recalcitrant posterior shoulder pain.…”

“…3,16 This may be experienced before, during, and after physical exertion. There is often isolated tenderness in response to palpation over the quadrilateral space, which is very close to the posterior rotator cuff muscles, teres minor, and infraspinatus (Figure 2 Conservative treatment should be attempted prior to surgical intervention.…”

“…16 In chronic cases, the lesion must be distal to the quadrilateral space when the posterior deltoid and teres minor are not affected.…”