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MRI Characteristics of Olecranon Bursitis

¹ Universitätsinstitut für Radiologie, Universitätsspital Basel, Petersgraben 4, Basel 4031, Switzerland.
² Thomas Jefferson University Hospital, 111 S 11th St., Philadelphia, PA 19107.

View larger version (136K): [in a new window]   Fig. 1A. —61-year-old man with surgically confirmed rupture of triceps tendon at insertion of olecranon and concomitant nonseptic effusion of olecranon bursa. Axial unenhanced T1-weighted spin-echo MR image (TR/TE, 400/11) of right elbow obtained in open MRI (0.3-T) system reveals hypointense collection (arrowheads) at dorsal aspect of olecranon without lobulation.

View larger version (126K): [in a new window]   Fig. 1B. —61-year-old man with surgically confirmed rupture of triceps tendon at insertion of olecranon and concomitant nonseptic effusion of olecranon bursa. Axial T2-weighted fat-suppressed image (4,050/70) shows homogeneous hyperintense signal in well-defined collection (arrowheads) without lobulation.

View larger version (109K): [in a new window]   Fig. 1C. —61-year-old man with surgically confirmed rupture of triceps tendon at insertion of olecranon and concomitant nonseptic effusion of olecranon bursa. Sagittal T2-weighted fat-suppressed image (4,100/100) reveals tear of triceps tendon (white arrowhead). Note concomitant elbow joint effusion (arrow). Olecranon bursa is marked with black arrowhead.

View larger version (127K): [in a new window]   Fig. 2A. —26-year-old woman with culture-proven septic olecranon bursitis. Axial T2-weighted fat-suppressed fast spin-echo image (TR/TE, 4,500/35; inversion time, 60 msec) of right elbow reveals effusion (arrow) in olecranon bursa with marked hypointense signal complexity of collection.

View larger version (123K): [in a new window]   Fig. 2C. —26-year-old woman with culture-proven septic olecranon bursitis. Sagittal T2-weighted fat-suppressed image (5,735/90) reveals moderate joint effusion (arrow) of elbow and hyperintense thickening (white arrowheads) of insertion of triceps. Note also hyperintense signal of olecranon bone marrow (black arrowheads).

View larger version (107K): [in a new window]   Fig. 2B. —26-year-old woman with culture-proven septic olecranon bursitis. Axial fat-suppressed T2-weighted image (5,735/90) shows focal edema (arrowheads) of subcutaneous tissue around olecranon bursa. Note also diffuse hyperintense signal (arrow) in bone marrow of olecranon indicative of osteomyelitis.

View larger version (116K): [in a new window]   Fig. 2D. —26-year-old woman with culture-proven septic olecranon bursitis. Axial T1-weighted fat-suppressed contrast-enhanced image (567/11) shows marked distention of olecranon bursa and moderate rim enhancement (arrow).

View larger version (111K): [in a new window]   Fig. 2E. —26-year-old woman with culture-proven septic olecranon bursitis. Coronal contrast-enhanced fat-suppressed T1-weighted image (567/11) reveals hyperintense signal in olecranon bone marrow (arrowheads), indicating concomitant osteomyelitis of olecranon.

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