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15M Runner with "Hip" pain

No Hip Injury. Instead, subacute partial tear of the Sartorius at its ASIS origin (note reactive BME). At the cranial margin of the FOV we can see that he previously partially avulsed the ITB at its iliac tubercle origin (residual bright signal in defect but minimal residual BME).  Just demonstrating the AIIS with the direct head R Femoris origin.

71M with arthritis NOS

Need diagnostic help.  71 yr old Indian Male with arthritis, NOS.  There is normal BMD, acro-osteolysis, acquired fusion of the base of the right 2nd and 3rd toe, JSN and erosions right 2nd and 3rd MTPJ  and fusiform swelling at the right middle finger PIP.  I favor psoriatic arthritis, but haven't seen it look quite like this.  Agree or no?  DDx???

Anatomy Question Re an Accessory Ulnar Wrist Ossicle

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This patient fell 1 week ago, known distal radial fracture, ordered by hand surgeon to evaluate possible "volar Barton fracture".  There is no fracture at the base of the thumb metacarpal.  My question is about the small, smooth ossicle adjacent to the base of the triquetrum.  This is 4.5 mm distal to the ulnar styloid.  Is this (A) traumatic displacement of an Os Triangulare...and, if so, what is it embedded in, what is torn?, or is this a (B) Os Hypotriquetrum (something listed in Wikipedia that I have never noticed)?