A healthy 22-year-old woman presented to the Emergency Department of Aarhus University Hospital with pain after she fell on her right knee. After taking the medical history, a thorough clinical examination was performed. A patellar trauma was suspected and consequently X-ray images of the affected knee were obtained. These included anterior-posterior and lateral views [Figure 1 and 2] as well as a skyline projection [Figure 3].
- What is the most likely diagnosis?
c.Accessory ossification center.
d.Bone tumor, most likely osteosarcoma.
e.Osgood-Schlatter disease (OSD).
- What is the usual initial treatment for this condition?
a.Single or repetitive corticosteroid injection.
b.Chemotherapy and radiation therapy.
c.Surgical treatment, including removal of the ossicle fragmentation.
d.Rest, ice, and nonsteroidal anti-inflammatory drugs.
e.Complete reduction in activity for at least one week.
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Figure 1: Anterior-posterior view of the right knee. Neither a fracture nor a dislocation is visible in this projection. The joint spaces and the soft tissues were normal.
Figure 2: The lateral view of the tibial tuberosity reveals an ununited free ossicle (red arrow).
Figure 3: The skyline projection of the right knee does not reveal a patellar displacement or fractures. The patella was well positioned.