Effect of local anesthetic injection in the shoulder on movement patterns in patients with shoulder pain: a double-blind randomized clinical trial

Effect of Local Anesthetic Injection in the shoulder on the Biokinetic Analysis of patients with Subacromial Pain: a double-blind randomized clinical trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

REBEC

Registry ID

RBR-7jtwdkw

Enrollment

Registered

2026-06-06

Start date

2026-06-15

Completion date

Unknown

Last updated

2026-06-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Shoulder Impingement Syndrome Shoulder lesions

Interventions

This is a two-arm, double-blind, randomized controlled clinical trial. A total of 46 participants will be recruited, with 23 allocated to the intervention group and 23 to the control group. Randomizat

s group allocation. Blinding is ensured by the fact that both solutions — 2% lidocaine hydrochloride with vasoconstrictor and saline solution (placebo) — are colorless and visually indistinguishable i

Eligibility

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Both genders; older than 18 years; present subacromial shoulder pain syndrome for at least 3 months

Exclusion criteria

Exclusion criteria: Patients with full-thickness rotator cuff tears; patients previously submitted to surgical procedures; and patients presenting any shoulder condition, deformity, or previous sequela identified by imaging examination that affects range of motion

Design outcomes

Primary

Measure	Time frame
An increase in the scapular internal rotation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive shoulder external rotation range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the humeral elevation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the glenohumeral elevation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the scapular upward rotation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the scapular anterior tilt angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements	—

Measure

Time frame

An increase in the scapular internal rotation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive shoulder external rotation range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the humeral elevation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the glenohumeral elevation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the scapular upward rotation angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in the scapular anterior tilt angle during shoulder flexion and abduction is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements

—

Secondary

Measure	Time frame
An increase in shoulder abductor strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in shoulder flexor strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in shoulder internal rotator strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in shoulder external rotator strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive shoulder flexion range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive shoulder internal rotation range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive thoracic flexion range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive thoracic extension range of	—

Measure

Time frame

An increase in shoulder abductor strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in shoulder flexor strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in shoulder internal rotator strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in shoulder external rotator strength is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive shoulder flexion range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive shoulder internal rotation range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive thoracic flexion range of motion is expected to be found, as assessed by three-dimensional biomechanical evaluation following local anesthetic infiltration, based on the observation of a variation of at least 5% between pre- and post-intervention measurements;An increase in passive thoracic extension range of

—

Countries

Contacts

Public ContactRaphael Fonseca

Departamento de Diagnóstico por Imagem da Universidade Federal de São Paulo

raphael_s_f@hotmail.com+55 (11) 5576-4848

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: Jun 29, 2026