Several years ago I had a injury on my right hand, which developed into what I researched to be called Dupuytren's Contracture: A condition of abnormal scar formation, maybe keloids under skin, usually on hand in back of ring finger... on the palm side of hand causing finger to contract, and only relax with great difficulty and pain. This became very limiting to any activity I tried to do. Pulling weeds in the garden, involved tightly contracting my hand to pull the weeds, but when I would try to straighten out my hand, I found I couldn't do it, and the pain felt like a ligament that was tied way past my wrist, into my right arm. I would pour running warm water on my arm and hand, and massage it, forcing it back open and flattening it. Even trying to write with pen or pencil was difficult, as it involved tightening fingers around the instrument, and found that it was always a good possibility that I'd find myself in this awkward position. I found myself going to bed clutching a rolled up washcloth, to prevent myself from waking up handicapped.
While studying Homeopathic remedies, by reading, and re-reading the Boerke's Materia Medica, I ran into a Homeopathic remedy called Thiosinaminum - Rhodallin (a chemical derived from oil of mustard seed). Boerke's says "A resolvent, externally and internally, for dissolving scar tissue, tumors, enlarged glands, lupus, strictures, and adhesions."
As Boerke's recommends using injections, and I planned to self treat, I copied my remedy on my Eagle Pro Remedy maker from my "30C mother remedy", and made it into pellets. I took these several times daily, for several months. The repetition of the problem became less and less. Finally, I realized, it had been several weeks since it had happened. As of today, I haven't had the contraction for probably 3 months, and consider myself cured by homeopathy.
One might try spraying it topically. Of Course, Boerke's suggests: "injecting it under skin, or, into the lesion a 10% solution in glycerin and water, 15-20 drops, twice a week. Internally, in capsules 1/2 grain daily. Obstinate arterio-sclerotic ailments in doses of 1/2 grain, never more, 3 times daily."
I don't know that outside of surgery, which has it's own percentage of side effects and complications, that I've heard of any cures for Dupuytren's Contracture with Allopathic medicine. I love it when Alternative medicine shines! Homeopathy is great!