Massage for Hardening After Silicone Butt Injections?

Massage will help the area, however, the nodules and hardening may require more aggressive treatment.  I see many of these patients with silicone injections and have developed an regimented protocol for correction of the inflammatory component. 

This is probably not going to produce any improvement and will likely cause the silicone to be more dispersed, the consequence of which is unknown.
The silicone is permanent and massaging the product 5 years after injection is unlikely to cause any significant change.

Regards, 
Liquid silicone is unsafe, please do not use it ever. The autoimmune response could be triggered by this substance, if you look around on the Internet, you will find patients that have a lot of problems with this product. The use for lips and other areas is off label. 
The Biopolymers cause a severe inflammatory reaction that can cause permanent damage to the tissues, known as Iatrogenic Allogenosis and an Autoimmune Syndrome (A.S.I.A. Syndrome). The risk of having autoimmune diseases and deformities in your face due to tissue damage is very high, then the use of any substance that is permanent is not advised. About your case, the massages do not have any type of clinical utility in the treatment of the granulomas caused by the silicone that was injected, on the contrary, it is possible that it helps to migrate to the neighboring regions.
In my medical center I developed the technique of resection of biopolymers in face, lips, buttocks and lower back through video endoscopy, a surgery performed with minnimal incissions to treat patients with permanent deformities, secundary to biopolymers injections.
Please remember to be aware, do not let any permanenrt filler to be injected into your face, breast, buttocks, calfs, genitalia, etc. 
I hope the information was usefull, have a nice day! Dr Carlos Alberto Ríos.

Silicone injections in various parts of the body has been done quite frequently all over the country.  The difficulty with silicone injections begins with the quality of the silicone itself.  I have seen many cases where industrial grade silicone has been injected inside the human body.  This can be a tremendous disaster.  Problems can include infections, granulomas, cellulitis, and persistent skin infections, disfigurement and skin dimpling.  It is very easy to have silicone injected, but very difficult to have it removed.  The removal can frequently be very complex and involved lengthy surgery. Multiple operation is not uncommon.   It is not uncommon to expect scars in locations that would otherwise be undesirable.  If you do have silicone, or are having problem with silicone that was injected by a non-healthcare provider then you should certainly seek medical attention.  Some solutions include IV antibiotics, oral antibiotics and surgery after the inflammation has subsided.  Removing the silicone is not just a cosmetic issue but also an issue of better health.  Depending on the type of silicone injected concerns with autoimmune diseases and infections are foremost.  Taking medications such as ibuprofen or cortisone is only a temporary measure.  The real solution is surgery.  Not all plastic surgeons are willing to operate on patients who have had silicone injected in their body.  Many of these cases are not covered by insurance because they were performed for cosmetic reasons.  My recommendation to anyone that has had silicone injections and wishes to have it removed, is to seek a board certified plastic surgeon who is likely willing to do more than 1 operation as well as willing to do some of these operations in a hospital setting. I have had patients visit me for removal of silicone and the discussion to proceed is never an easy one.