Hemophilic arthropathy, there is marked synovial proliferation at the ankle and posterior subtalar joints which
appears of low signal on all sequences. There is some contrast enhancement consistent with synovitis. There is
marrow edema within the talus and calcaneum and degenerative disease of the posterior subtalr joint.
Findings reveal the
process that begins
with acromio -
complete tear of
and also, infra-
Features of internal impingement of the shoulder with humeral head cysts underlying infraspinatus,
superior fiber infraspinatus and posterior fiber supraspinatus tendinosis and posterosuperior labral
fraying. Subacromial bursal thickening and increased fluid indicating co-existing subacromial bursitis.
Adhesive capsulitis. There is thickening of the axillary pouch, which is only mildly hyperintense (arrow). b Axial
proton density FSE image of the same patient demonstrates moderate scarring of the rotator interval (arrow).
Sagittal images (A,B,C) and coronal image (D) of T2 weighted MRI. A horizontal meniscal tear is identified inside the meniscus in Figure 1-
A (a white arrow). A multilobulated cyst is located just behind the medial meniscus and the PCL (B, C). The cyst is in communication with
the meniscal tear on Figure 1-D (white arrows). Note that the horizontal meniscal tear has not extended to the tibial or femoral surface.
degeneration with cyst-
material is squeezed
from between the ACL-
fibers into the bone. At
arthroscopy ACL and
bone looked normal.
Compressive ulnar neuropathy. (A) Axial PD-weighted sequence with fat suppression at the level
of the canal of Guyon’s. The ulnar nerve (arrow) has high signal intensity and it is thickened.
There is a ganglion cyst (*) compressing the ulnar nerve against the pisiform. (B) The ganglion
cyst (*) is large and extends distally beyond the ulnar tunnel (hook of the hamate **).
Rheumatoid arthritis. Coronal T2-weighted image with fat suppression. Diffuse deep chondral erosions of the
proximal and midcarpal compartments and large joint effusion with synovitis (*) were found during the investigation
of chronic wrist pain in this 35-year-old woman. Erosions are seen in the scaphoid and triquetrum (arrows).