I find this interesting, not sure if this is on point with your issue or not

from Dr. Ketchum who spoke at the Dup Symposium
http://www.lynndketchum.com/surgeries.htm

----Early in the 1970’s, I began using full thickness skin grafts in this way and found, as others did, that recurrent disease did not occur beneath the grafts; however, tantalizingly, new disease, which is called an extension, did develop and skirted around the grafts. This was very frustrating until I began to enlarge the grafts. If there was no disease on the radial side of the hand (thumb and/or index finger) the procedure I have used for the last 25+ years has been a dermofasciectomy and full thickness skin graft in which a minimum of one centimeter of skin (this includes the dermis) is removed along with diseased fascia all the way down to tendon sheaths and nerves and blood vessels. This resection is done at the distal crease of the palm and from between the index and middle fingers to the mid-lateral line of the little finger, i.e. the mid-point between the palm and dorsum (back) of the hand. If there is Dupuytren’s disease on the radial side of the hand (thumb and/or index finger) the dermofasciectomy extends over the entire width of the hand at the distal crease of the palm with a width of tissue of at least one centimeter. The full thickness skin grafts are taken from the inner side of the upper arm with the scars being very acceptable. By using these large grafts, the incidence of recurrence and extension combined has been decreased from 40-50% to 8%. The dermofasciectomy procedure is only used if an individual has one or more factors of the "Dupuytren’s Diathesis", which indicates a greater tendency toward recurrent disease. Otherwise a conventional limited fasciectomy is employed.