Medicinal and injection therapies for mechanical neck disorders

Area of Science:

• Orthopedics
• Pain Management
• Neurology

Background:

• Medicinal therapies and injections for neck disorders remain controversial.
• Evidence for their efficacy in mechanical neck disorders and whiplash is debated.

Purpose of the Study:

• To evaluate the effects of medications and injections on primary outcomes, such as pain, in adults with mechanical neck disorders and whiplash.
• To synthesize evidence from randomized controlled trials on various therapeutic interventions.

Main Methods:

• Systematic search of multiple databases (CENTRAL, MANTIS, CINAHL, MEDLINE, EMBASE) up to 2006.
• Inclusion of randomized controlled trials involving adults with neck disorders, with or without associated headache or radicular findings.
• Independent article selection, data abstraction, and quality assessment by two authors, with meta-analysis where appropriate.

Main Results:

• Intravenous methylprednisolone within 8 hours of acute whiplash reduced pain at one week but not at six months.
• Lidocaine injections into myofascial trigger points showed short-term efficacy for chronic neck disorders.
• Botulinum toxin A injections demonstrated no significant difference compared to saline for chronic neck disorders.

Conclusions:

• Moderate evidence supports intravenous methylprednisolone for acute whiplash pain relief in the short term.
• Lidocaine injections appear effective for chronic neck pain, while Botulinum toxin A shows no added benefit over saline.
• Limited evidence and unclear benefits exist for muscle relaxants, analgesics, and NSAIDs in managing neck disorders.