A 40 yo M presents to the ED with R wrist pain. Onset was just before arrival when he was lifting at work, "felt a pop" and had sudden onset of pain. Exam reveals swelling and tenderness of the R wrist. Neurovascular exam is normal. A R wrist xray is done and shown below.  What's the diagnosis? (scroll down for answer)

Answer: Scapholunate Dissociation

A 17 yo F with no PMHx presents to Urgent Care w/ L sided chest pain. Pain sharp, radiates to L upper back, has been intermittent x 1 month, worse x last 2-3 days. No exacerbating or relieving factors. She denies fever/chills, cough/URI sx, LE pain/edema. No prior hx of DVT, no OCPs. On exam, she is anxious appearing. She is tachycardic to the 120s with normal heart sounds. Spo2 is 100% and breath sounds are diminished on the left. A CXR is done and shown below. What's the diagnosis?(scroll down for answer) 

A 55 yo M presents to the ED w/ thumb pain following an MVC. He states his car spun out of control and he felt the steering wheel slam into the webspace between his thumb and 2nd digit. Pain and swelling have worsened since the time of the accident. An xray is done and shown below. What's the diagnosis? (scroll down for answer)

Answer: Carpometacarpal dislocation of first digit

A 14 yo F with no past medical history presents to the ED after acute onset of headache, nausea/vomiting and change in mental status.