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Robot-assisted arm training for treating adult patients with distal radius fracture: a proof-of-concept pilot study [with consumer summary]
Picelli A, Munari D, Modenese A, Filippetti M, Saggioro G, Gandolfi M, Corain M, Smania N
European Journal of Physical and Rehabilitation Medicine 2020 Aug;56(4):444-450
clinical trial
8/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

BACKGROUND: Fracture of the distal radius is a common wrist injury. As to its management after orthopedic (conservative or surgical) treatment, there is weak evidence for conventional rehabilitation interventions. Despite the increasing interest for robot-assisted arm therapy as to neurological disabilities and its growing diffusion in rehabilitation facilities, no previous study investigated the feasibility of robotic training on arm orthopedic impairment. AIM: To evaluate the feasibility in terms of efficacy of robot-assisted arm training on upper limb impairment in patients with fracture of the distal radius. DESIGN: Proof-of-concept, pilot, randomized controlled trial. SETTING: University hospital. POPULATION: Twenty adult outpatients with distal radius fracture due to wrist injury. METHODS: All participants underwent ten, 1-hour (40 minutes of arm training plus 20 minutes of conventional occupational therapy) training sessions, five days a week for two consecutive weeks. They were randomly assigned to two groups: patients allocated to the Robotic Arm Training group received arm training by means of a robotic device and patients allocated to the conventional arm training group performed arm training following a conventional rehabilitation program. All patients were evaluated before, immediately after treatment and at four weeks of follow-up. The following outcomes were considered at the affected arm: forearm pronation/supination and wrist extension/flexion passive and active range of motion; maximal pinch and grip strength; the Patient-Rated Wrist and Hand Evaluation. RESULTS: No difference was found between groups as to the primary (wrist active and passive range of motion) and secondary (pinch and grip strength; Patient-Rated Wrist and Hand Evaluation Score) outcomes at all time points. Within-group comparisons showed similar improvements at all time points as to all outcomes considered in both groups. CONCLUSIONS: Our preliminary findings support the hypothesis that robot-assisted arm training might be a feasible tool for treating upper limb impairment in adult patients with distal radius fracture treated conservatively or surgically.

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