***TASK***
the task is to simplify the input abstract of a biomedical literature

***INPUT***
the input is the abstract of a biomedical literature

***OUTPUT***
the output is the simplified abstract for the input abstract of a biomedical literature

***DOCUMENTATION***

***EXAMPLES***

Input: Two trials with a total of 210 participants were included. Both trials were at some risk of performance bias. One trial had four intervention groups and the other had three. One trial found that foot orthoses when compared with flat insoles (control group) had better results at six weeks in knee pain (participants with global improvement: risk ratio 1.48, 95% confidence interval 1.11 to 1.99), but not at one year follow-up. Participants in the orthoses group reported significantly more minor adverse effects (e.g. rubbing, blistering) compared with the flat insole group (risk ratio 1.87, 95% confidence intervaI 1.21 to 2.91). Both trials in their comparisons of orthoses plus physiotherapy versus physiotherapy alone found no statistically significant differences between the two intervention groups in knee pain or function. Results for knee pain outcomes did not show significant differences between foot orthoses versus physiotherapy. Although participants in the physiotherapy group had consistently better results for the functional index questionnaire, the clinical relevance of these results is uncertain. While not robust, the available evidence does not reveal any clear advantage of foot orthoses over simple insoles or physiotherapy for patellofemoral pain. While foot orthoses may help relieve knee pain over the short term, the benefit may be marginal. Patients treated with orthoses are more likely to complain of mild adverse effects and discomfort.
Output:

We included two studies with a total of 210 participants in this review. Both trials were at some risk of bias because not enough care had been taken to ensure that groups received the same treatment other than the interventions being tested. One trial found some benefits from using foot orthoses over simple insoles at six weeks but not at one year. Participants wearing orthoses were, however, more likely to report minor adverse effects (e.g. rubbing, blistering) and discomfort compared with those wearing insoles. There were no important differences in knee pain and function in people given foot orthoses as well as physiotherapy when compared with people given physiotherapy only. Results for knee pain and function did not show important differences between foot orthoses versus physiotherapy. On the basis of the available evidence we do not recommend foot orthoses for adults with pain around the knee cap.