The purpose of this trial is to evaluate the effect of conservative treatment in comparison to arthroscopic resection of pathological medial plicae of the knee for patients with medial plica syndrome. The investigators expect conservative treatment to be significantly superior to arthroscopic plica resection with regard to symptom remission and return to prior functional level.

Inclusion Criteria:

• Aged over 18 years
• History of antermedial knee pain
• Palpable medial band in clinical examination or medial plica appearence on MRI
• Absence of all of the following diagnoses: Osteoarthritis, osteochondritis dissecans, meniscal injury, patella subluxation, pes anserinus bursit, patellofemoral pain syndrome
• Given declaration of consent
• Joining a fitness centre for the duration of minimum 3 months at their own expense.

Exclusion Criteria:

Aged under 18 years

• Presence of one or more of the following diagnoses: Osteoarthritis, osteochondritis dissecans, meniscal injury, patella subluxation, pes anserinus bursit, patellofemoral pain syndrome
• Prior surgical intervention, infection, fracture or patellar luxation concerning the relevant knee
• Not willing to join a fitness centre for the duration of minimum 3 months at their own expense