Prognostic Factors of Efficacy in Corticoid and Anesthetic Joint Infiltration for the Treatment of Patients with Low Back Pain Secondary to Zygapophyseal Osteoarthritis: a Prospective Cohort Study
Magnet Resonance Image findings of facet osteoarthritis and patient characteristics are prognostic factors for improving or worsening the clinical outcome after treatment with facet infiltration.
⁃ The following are inclusion criteria for participants:
• Older than 18 years;
• Fluent or native Portuguese language speaker;
• Continuous or intermittent low back pain for at least three months;
• Low back pain with or without irradiation to the gluteal region indicating facet syndrome (pain is aggravated by spine extension or bending toward the affected side; pain is exacerbated by prolonged sitting or walking up steps, as well as retaining one position for a prolonged time);
• Failure of traditional treatment includes, but is not limited to, physical or drug therapy;
• Understand the purpose of the study;
• Voluntarily provide a free and informed consent form, by themselves or through their partners, and complete the questionnaires, before undergoing infiltration, over the telephone or online during the follow-up.