IRCT201201298861N1 IRCT 2012-03-15 Researach deputy of Tehran university of medical sciences, Faculty of medicine Soft tissue distraction using pentagonal frame in long standing traumatic flexion deformity of interphalangeal joints Comparison between treatment outcomes of soft tissue distraction in addition to Z-plasty and Z-plasty alone after skin graft in patients with chronic flexion contracture of interphalangeal joints due to previous traumatic abrasive injuries 2011-08-01 anticipated 40 Complete https://irct.ir/trial/9334 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. N/A Flexion contracture of proximal and distal interphalangeal finger joints. Intervention 1: Group A (intervention) : Soft tissue distraction will be performed using pentagonal frame technique. In this method, primarily, scars and contractures will be released using single or multiple Z or zigzag incisions for lengthening. A Kirschner wire size 1–1.5 mm (matching the patient’s distal phalanx thickness) will be used for anchorage. The wire wll be passed horizontally, under direct fluoroscopic control, through the head of the phalanx and then bent like a pentagon. Before closing the wire ends, a rubber band will be inserted inside the frame. The frame will be shaped such that only the horizontal wire segment exerts the ‘‘distraction,’’ and no vascular compromise or soft tissue encroachment will be created. An external fixation device will then be used to distract the finger. Intervention 2: Group B (Control) : In this group, scars and contracture will be release using single or multiple Z or zigzag incisions for lengthening. Then, a splint will be used to hold the finger in full extension position.