Fig. 3

A Data distribution of mean change in knee flexion between different nonsurgical interventions. Pharm, pharmacological interventions; Non_pharm, nonpharmacological interventions; mixed, both pharmacological and non-pharmacological interventions; flexion.change, mean change between baseline and immediately after the intervention. B Data distribution of mean change in knee flexion between different knee flexion measurement positions. NR, measurement position not reported; prone, prone position; supine, supine position; flexion.change, mean change between baseline and immediately after the intervention. C Data distribution of mean change in knee flexion between different methods of flexion assessment (mode). Active, measurement mode-active flexion; NR, measurement mode not reported; passive, measurement mode-passive flexion; flexion.change, mean change between baseline and immediately after the intervention