Case 8- Left wrist discomfort

What do you see?

Nodular density- proximal to left hypothenar region.

Bone or soft tissue?

Oblique view of left wrist.

Questionable density seen on volar aspect with wrist with distal ulnar resorption.

Semi-supinated view of the left wrist
(Norgaard’s position)

Radiographic features: exostosis with chondroid matrix, parent
cortex continuous with lesion. All features consistent with
osteochondroma of volar left wrist.

CLINICAL FOLLOWUP:

Once the degree of encasement of the osteochondroma was verified with imaging, surgical intervention resulted in a successful clinical outcome.

DISCUSSION:
Osteochondroma represents the most common bone tumor is an aberration of enchondral ossification, NOT a true neoplasm. (1) Complications include: cosmetic and osseous deformity fracture, neurologic sequlae as in our case.

KEY FACTS: (2)

• Bony protrusion covered by a cartilaginous cap.
• Growth in childhood takes place in the cap, corresponding to normal enchondral growth at the growth plates.
• A thick cartilaginous cap in an adult is suspicious of chondrosarcoma.