The following structure is involved in Dupuytren's contracture -
Dupuytren&;s contracture is characterised by a flexion deformity of one or more fingers due to thickening and shoening of palmar aponeurosis.Normally palmar aponeurosis is thin but tough membrane lying Immediately beneath the skin of the palm. Proximally it is in continuation with palmaris longus tendon. Distally it divides into slips one for each finger. The slip bends with the fibrous flexor sheaths covering the flexor tendon of the finger , and extends upto the middle phalanx. In Dupuytren&;s contracture aponeurosis or a pa of it becomes thickened and slowly contracts, drawing the fingers into flexion at the metacarpo-phalangeal and proximal interphalangeal joints. Reference- Essential ohopaedics- Maheshwari- 5th edn- pg no 302
Thickening of the palmar fascia
Thickening of the dorsal fascia
Contracture of the flexor tendons
Post burns contracture
Bony dysplasia and soft tissue affection