Just wanted to check in if anyone else here with POIS has also experienced a condition called "Frozen Shoulder" also known as "Adhesive Capsulitis".
It seems to affect those with diabetes or other chronic disease or immune related conditions (which I assume could include POIS).
http://www.webmd.com/a-to-z-guides/frozen-shoulder-topic-overviewI got this back in June, and phase I is a painful phase, needing physio and painkillers (hard to sleep with it at night).
Not really expecting anyone else here with this, but just wanted to give a shout out, in case it informs anything here, be it research or a fellow 'Frozen Shoulderer'.