For chronic neck pain, the use of strengthening exercise, whether in combination with spinal manipulation or in the form of a high-technology MedX program, appears to be more beneficial to patients with chronic neck pain than the use of spinal manipulation alone. The effect of low-technology exercise or spinal manipulative therapy alone, as compared with no treatment or placebo, and the optimal dose and relative cost effectiveness of these therapies, need to be evaluated in future studies.

Cervical spine manipulation and mobilization probably provide at least short-term benefits for some patients with neck pain and headaches. Although the complication rate of manipulation is small, the potential for adverse outcomes must be considered because of the possibility of permanent impairment or death.

Mobilization and/or manipulation when used with exercise are beneficial for persistent mechanical neck disorders with or without headache. Done alone, manipulation and/or mobilization were not beneficial; when compared to one another, neither was superior. There was insufficient evidence available to draw conclusions for neck disorder with radicular findings. Factorial design would help determine the active agent(s) within a treatment mix.

Objective-To review the efficacy of conservative management of mechanical neck disorders.Methods-Published and unpublished reports were identified through computerised and manual searches of bibliographical databases, reference lists from primary articles, and letters to authors, agencies, foundations, and content experts. Selection criteria were applied to blinded articles, and selected articles were scored for methodological quality. Effect sizes were calculated from raw pai scores and combined by using meta-analytic techniques when appropriate.Results-Twenty four randomised clinical trials met the selection criteria and were categorised by type of intervention: nine used manual treatments; 12 physical medicine methods; four drug treatment; and three education of patients (four trials investigated more than one form of intervention). The intervention strategies were summarised separately. Pooling of studies was considered only within each category. Five of the nine trials that used manual treatment in combination with other treatments were combined. One to four weeks after treatment the pooled effect size was -0.6 (95% confidence interval -0.9 to -0.4), equivalent to an improvement of 16 (6.9 to 23

In children with mild or moderate asthma, the addition of chiropractic spinal manipulation to usual medical care provided no benefit.

Multimodal care has short-term and long-term maintained benefits for subacute/chronic MND with or without headache. The common elements in this care strategy were mobilisation and/or manipulation plus exercise. The evidence did not favour manipulation and/or mobilisation done alone or in combination with various other physical medicine agents; when compared to one another, neither was superior. There was insufficient evidence available to draw conclusions for neck disorder with radicular findings. The added benefit of exercise needs to be further explored. Factorial design would help determine the active treatment agent(s) within a treatment mix. Phase II trials would help identify the most effective treatment characteristics and dosages. Greater attention to methodological quality is needed.

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