Clinical and radiological effects of Corticosteroid injection combined with deep transverse friction massage and Mill's manipulation in lateral epicondylalgia-A prospective, randomized, single-blinded, sham controlled trial.

Background: The knowledge about the effective implementation of corticosteroid injection (CS) with deep transverse friction massage (DTFM) and Mill's manipulation (MM) on clinical and radiological changes (Magnetic resonance imaging-MRI and Ultra sound) in lateral epicondylalgia (LE) is lacking. Therefore, the objective of this study is proposed to find and compare the effects of corticosteroid injection (CS) DTFM and Mill's manipulation on clinical and radiological changes in lateral epicondylalgia.

Design, Setting, Participants: Randomized, single-blinded, controlled study was conducted on 60 LE participants at university hospital. The active MM group (n = 30) received corticosteroid injection with DTFM and active Mill's manipulation (MM) three sessions a week for 4 weeks and the sham MM group received corticosteroid injection with sham manipulation. The primary outcome was pain intensity, measured with the visual analog scale. The other outcome measures were percentage of injury measured by MRI and ultrasound, functional disability, handgrip strength, patient perception, kinesiophobia, depression status and quality of life which were measured at 4 weeks, 8weeks and at 6 months follow up.

Results: The between-group difference in pain intensity at 4 weeks was 1.6 (CI 95% 0.97 to 2.22), which shows improvement in the active group than sham group. The similar effects have been noted after 8 weeks and at 6 months 2.0 (CI 95% 1.66 to 2.33) follow up in pain intensity. Similar improvements were also found on percentage of injury, functional disability, handgrip strength, patient perception, kinesiophobia, depression status and quality of life (p = 0.001).

Conclusion: Corticosteroid injection with DTFM and Mill's manipulation was superior to sham group for improving pain, percentage of injury, functional disability, handgrip strength, patient perception, kinesiophobia, depression status and quality of life in people with lateral epicondylalgia.

Trial Registration: Clinical trial registration: CTRI/2020/05/025135 trial registered prospectively on 12/05/2020. https://trialsearch.who.int/Trial2.aspx?TrialID=CTRI/2020/05/025135.