Inclusion Criteria:  Being in the age range of 18-55, Being able to read and write in Turkish, Having pain for more than a month, Having anterior knee pain without trauma, To have a pain intensity of three points and / or above according to the Visual Analogue Scale (VAS) in the peri or retropatellar region in the previous week.  Exclusion Criteria:  Meniscus, cross and collateral ligament, iliotibial band lesion, Having pes anserin tendinitis, Osgood-Schlatter syndrome, Sinding-Larsen-Johansson Syndrome, previous patellar dislocation and previous knee surgery, having received knee injection treatment at least three months ago, Using Nonsteroidal Anti-inflammatory and Cortisone drugs frequently once a week or more, Trauma history and neurological disease, Having a patellar fracture, osteoarthritis or other intra-articular knee pathology, Having pain and knee effusion reflected from the hip and lumbar region ( Those with contraindicated conditions for electrical stimulation (biomedical device implant, pregnant women, neuropathy, muscle abnormalities or hypersensitivity, malignancy, hemorrhagic area, skin damage, active infection in the area where the electrodes are placed) (3,59).  Having had previous electrical stimulation therapy  -