A 55-year-old man presented to the emergency department with severe acute knee pain following a twisting injury while skiing.

A 55-year-old man presented with right knee pain after a long hike.

A 40-year-old man presented with left ankle pain after falling while skateboarding.

A 23-year-old man with no significant past medical history presented with right-sided knee pain, swelling, and inability to bear weight following an acute injury during soccer.

A 23-year-old man presented with right thigh pain and swelling he had experienced for one week after suffering trauma to the right thigh while playing basketball.

A 25-year-old woman presented with wrist pain after falling off a bicycle. 

A 16-year-old boy with a progressively enlarging midline posterior neck mass.

An 11-year-old boy with months of knee pain that worsens after sports practice.

A 27-year-old man with right knee pain after slipping at a concert.

A 34-year-old woman with ankle pain over the past 10 months.