A 14-year-old girl with a type of cancer called T-ALL received a special transplant, but it took a long time for her body to start making new blood cells.
The doctors tested a medication she was given, called daratumumab, to see if it was affecting her recovery.
They found that the daratumumab stayed in her body longer than expected, which might have caused the delays, and they are planning to research how to use this medication better for kids with cancer.
Knee dislocation is one of the few real orthopaedic emergencies. It is a serious but relative uncommon injury, representing less than 0.02% of all orthopaedic injuries.