You could try the following.
It is possible that at least one of the primary and/or secondary muscles connected to your shoulder could have a "muscle knot", "trigger point", "adhesive section" that will need to be removed. This is performed by massaging and other forms of pressure point manipulation.
Get someone to massage (with pressure) any primary and secondary muscles connected to the shoulder which is frozen. You will know what I mean when pressure on a particular section becomes a "holy sh!t" moment.
This style of remediation is steadily gaining mainstream recognition, and is called myofascial release technique or Active Release Technique.
The link to the following page is a more definitive and detailed explanation of these techniques in relation to adhesive capsulitis
www.painscience.com/tutorials/frozen-shoulder.php PS: From what I've learnt, any muscle that forms a "muscle knot/trigger point" will generally create issues for any joint that it is directly/indirectly connected to