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Updated: May 24, 2026

Clinical Efficacy of Small Needle Knife Therapy on Stage I-II Frozen Shoulder
Published on: November 17, 2023
Skin and needle hygiene intervention for injection drug users: results from a randomized, controlled Stage I pilot
Kristina T Phillips1, Michael D Stein, Bradley J Anderson
1University of Northern Colorado, School of Psychological Sciences, Greeley, CO 80639, USA. kristina.phillips@unco.edu
Abstract:
A new skin and needle hygiene intervention, designed to reduce high-risk injection practices associated with bacterial and viral infections, was tested in a pilot, randomized controlled trial. Participants included 48 active heroin injectors recruited through street outreach and randomized to either a 2-session intervention or an assessment-only condition (AO) and followed up for 6 months. The primary outcome was skin- and needle-cleaning behavioral skills measured by videotaped demonstration. Secondary outcomes were high-risk injection practices, intramuscular injection, and bacterial infections. Intervention participants had greater improvements on the skin (d = 1.00) and needle-cleaning demonstrations (d = .52) and larger reductions in high-risk injection practices (d = .32) and intramuscular injection (d = .29), with a lower incidence rate of bacterial infections (hazard ratio = .80), at 6 months compared with AO. The new intervention appears feasible and promising as a brief intervention to reduce bacterial and viral risks associated with drug injection.
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