AS with lateral foot pain ? AS erosion or gout

T1FS + C

Arachnoiditis

Lateral Downsloping of Acromion

Adhesive Capsulitis

Quadratus Femoris Muscle Strain or Minor Tear

Patella Tendon-Lateral Femoral Condyle Friction Syndrome

Grade III MCL Tear

Meniscal Flounce

Decussation Of Superior Cerebellar Peduncle Fibres

No to be mistaken for abnormal high signal on FLAIR and DWI in midbrain.

Peroneus Quartus

Peroneus quartus muscle and tendon.

Prevalence: 12-22%

Originates at the distal lateral portion of the fibula and descends medial and posterior to the peroneal tendons.

Insertion is variable and includes the retrotrochlear eminence of the calcaneus, the phalanx or the metatarsal bone of the fifth toe, the peroneal tendons, the lateral retinaculum of the ankle, and the cuboid bone.

Also: incidental Achilles Tendinosis

Plantar Fibroma

Can enhance in 50%!

Anconeus Hyperintensity asspciated with Chronic Lateral Epicondylitis

"CONCLUSION. Increased signal intensity of the anconeus muscle on MR images in
patients with chronic lateral epicondylitis suggests Involvement of the muscle.
Increased signal intensity is seen with edema, granulation tissue, and Inflammation,
which may explain the findings in this study. Our results are Inconclusive as to
whether this increased signal intensity contributes to the chronicity of patient symptomatology
or is associated with abnormal elbow motion because of the symptoms."

AJR 161, November 1993, p1019

Chance Fracture II - Subsequent CT

Chance Fracture I -- Initial MRI

Patient's history was ? discitis. Note posterior element changes and small posterior epidural haematoma

Peroneus Longus Tendinosis and Insertional Tear

Subacute Combined Degeneration of the Spinal Cord

Subtle Wrisberg Rip (in setting of ACL tear)

Benign Peripheral Nerve Sheath Tumour Arm

Note: "Target Sign" on T2FS -- due to collagen and condensed Schwann cells.