Immobilization versus early active mobilization after surgical repair of injured extensor tendon of hand and forearm

Abstract

Background: Extensor tendon injuries are very common injuries in hand & forearm, which inappropriately treated can cause severe lasting impairment of hand function of the patient. After the extensor tendons repair whether to immobilization or to early active mobilization is debatable. Objectives: Compare the two common protocols, immobilization vs. early active mobilization by using a simple static splint after surgical repair of extensor tendon. Method: This prospective randomized study was conducted in the Department of Orthopaedic Surgery, BSMMU, Dhaka for duration of January 2014 to December 2017. Forty (40) patients of extensor tendon injuries in zone V-VIII were selected. The patients were divided into two groups by sealed envelope technique, Group A-immobilization group & Group B-early active mobilization group. Extensor tendon was repaired by Doyle proposed technique. Mayo Wrist Score and Dargan criteria were used for evaluation of final result at 12th months. Results: Most of the patients were in 3rd decade. Male and right hand injury were predominant in both groups. More than one third, (35.0%) patients were factory worker in immobilization group and 8(40.0%) in EAM group. Majority 17(85%) patients had glass cut injury in both groups. Nine (45.0%) patients had Zone VI injury in immobilization group and 10(50.0%) in EAM group. In immobilization group out of 72 tendon injury EDC injury was 37(51.38%) and in EAM group out of 69 tendon injury EDC injury was 37(53.62%). Complications developed 6(30.0%) in immobilization group and 4(20.0%) in EAM group. Satisfactory outcome was 85% in immobilization group and 95% in EAM group at 12th months. Assessment at 12th weeks and 6th months were statistically significant (p