![[Figure 1]](http://onlinelibrary.wiley.com/store/mrw_content/cochrane/clsysrev/articles/CD000335/image_t/tCD000335-AFig-FIG01.png?v=1&t=h2pol2mz&s=2df8ee85aeea98a93ce7e136adc09aa403ae7081) | Figure 1. |
![[Figure 2]](http://onlinelibrary.wiley.com/store/mrw_content/cochrane/clsysrev/articles/CD000335/image_t/tCD000335-AFig-FIG02.png?v=1&t=h2pol2n0&s=d77837ef0a569b58c375bd99a08f9487a752462a) | Figure 2. |
![[Analysis 1.1]](/images/14651858/forrest_default.gif) | Analysis 1.1. Comparison 1 Chronic populations, Outcome 1 Function measure (/100): Earliest follow-up. |
![[Analysis 1.2]](/images/14651858/forrest_default.gif) | Analysis 1.2. Comparison 1 Chronic populations, Outcome 2 Function measure (/100): Short-term follow-up (˜6 weeks post-randomization). |
![[Analysis 1.3]](/images/14651858/forrest_default.gif) | Analysis 1.3. Comparison 1 Chronic populations, Outcome 3 Function measure (/100): Intermediate follow-up (˜6 months post-randomization). |
![[Analysis 1.4]](/images/14651858/forrest_default.gif) | Analysis 1.4. Comparison 1 Chronic populations, Outcome 4 Function measure (/100): Long-term follow-up (˜12 months post-randomization). |
![[Analysis 1.5]](/images/14651858/forrest_default.gif) | Analysis 1.5. Comparison 1 Chronic populations, Outcome 5 Pain measure (/100): Earliest follow-up. |
![[Analysis 1.6]](/images/14651858/forrest_default.gif) | Analysis 1.6. Comparison 1 Chronic populations, Outcome 6 Pain measure (/100): Short-term follow-up (˜6 weeks post-randomization). |
![[Analysis 1.7]](/images/14651858/forrest_default.gif) | Analysis 1.7. Comparison 1 Chronic populations, Outcome 7 Pain measure (/100): Intermediate follow-up (˜6 months post-randomization). |
![[Analysis 1.8]](/images/14651858/forrest_default.gif) | Analysis 1.8. Comparison 1 Chronic populations, Outcome 8 Pain measure (/100): Long-term follow-up (˜12 months post-randomization). |
![[Analysis 2.1]](/images/14651858/forrest_default.gif) | Analysis 2.1. Comparison 2 Subacute populations, Outcome 1 Function measure (/100): Earliest follow-up. |
![[Analysis 2.2]](/images/14651858/forrest_default.gif) | Analysis 2.2. Comparison 2 Subacute populations, Outcome 2 Function measure (/100): Short-term follow-up (˜6 weeks post-randomization). |
![[Analysis 2.3]](/images/14651858/forrest_default.gif) | Analysis 2.3. Comparison 2 Subacute populations, Outcome 3 Function measure (/100): Intermediate follow-up (˜6 months post-randomization). |
![[Analysis 2.4]](/images/14651858/forrest_default.gif) | Analysis 2.4. Comparison 2 Subacute populations, Outcome 4 Function measure (/100): Long-term follow-up (˜12 months post-randomization). |
![[Analysis 2.5]](/images/14651858/forrest_default.gif) | Analysis 2.5. Comparison 2 Subacute populations, Outcome 5 Pain measure (/100): Earliest follow-up. |
![[Analysis 2.6]](/images/14651858/forrest_default.gif) | Analysis 2.6. Comparison 2 Subacute populations, Outcome 6 Pain measure (/100): Short-term follow-up (˜6 weeks post-randomization). |
![[Analysis 2.7]](/images/14651858/forrest_default.gif) | Analysis 2.7. Comparison 2 Subacute populations, Outcome 7 Pain measure (/100): Intermediate follow-up (˜6 months post-randomization). |
![[Analysis 2.8]](/images/14651858/forrest_default.gif) | Analysis 2.8. Comparison 2 Subacute populations, Outcome 8 Pain measure (/100): Long-term follow-up (˜12 months post-randomization). |
![[Analysis 3.1]](/images/14651858/forrest_default.gif) | Analysis 3.1. Comparison 3 Acute populations, Outcome 1 Pain measure (/100): Earliest follow-up. |
![[Analysis 3.2]](/images/14651858/forrest_default.gif) | Analysis 3.2. Comparison 3 Acute populations, Outcome 2 Pain measure (/100): Short-term follow-up (˜6 weeks post-randomization). |
![[Analysis 3.3]](/images/14651858/forrest_default.gif) | Analysis 3.3. Comparison 3 Acute populations, Outcome 3 Pain measure (/100): Intermediate follow-up (˜6 months post-randomization). |
![[Analysis 3.4]](/images/14651858/forrest_default.gif) | Analysis 3.4. Comparison 3 Acute populations, Outcome 4 Pain measure (/100): Long-term follow-up (˜12 months post-randomization). |
![[Analysis 3.5]](/images/14651858/forrest_default.gif) | Analysis 3.5. Comparison 3 Acute populations, Outcome 5 Function measure (/100): Earliest follow-up. |
![[Analysis 3.6]](/images/14651858/forrest_default.gif) | Analysis 3.6. Comparison 3 Acute populations, Outcome 6 Function measure (/100): Short-term follow-up (˜6 weeks post-randomization). |
![[Analysis 3.7]](/images/14651858/forrest_default.gif) | Analysis 3.7. Comparison 3 Acute populations, Outcome 7 Function measure (/100): Intermediate follow-up (˜6 months post-randomization). |
![[Analysis 3.8]](/images/14651858/forrest_default.gif) | Analysis 3.8. Comparison 3 Acute populations, Outcome 8 Function measure (/100): Long-term follow-up (˜12 months post-randomization). |
![[Analysis 4.1]](/images/14651858/forrest_default.gif) | Analysis 4.1. Comparison 4 POPULATION SOURCE: Chronic populations (Exploratory analysis), Outcome 1 Function measure (/100); Earliest follow-up: Indirect comparisons. |
![[Analysis 4.2]](/images/14651858/forrest_default.gif) | Analysis 4.2. Comparison 4 POPULATION SOURCE: Chronic populations (Exploratory analysis), Outcome 2 Pain measure (/100); Earliest follow-up: Indirect comparisons. |
![[Analysis 5.1]](/images/14651858/forrest_default.gif) | Analysis 5.1. Comparison 5 Methodological Quality of Included Studies, Outcome 1 criteria met. |