What is plica syndrome?
AI-generated illustration. This is not a real patient or a diagnostic image.
A plica is a fold in the lining of the knee joint. Many people have one, usually without problems. In some circumstances, irritation and thickening may be associated with pain at the front or inner side of the knee and a catching sensation.
How is it recognised?
Stairs, squatting or repeated knee bending may worsen symptoms. However, similar symptoms occur with meniscal, cartilage or other kneecap-related problems. A description of clicking or catching alone does not establish the diagnosis.
A plica seen on MRI does not prove it causes the pain. History and examination are central; imaging is used when needed to investigate other possibilities.
What is the first treatment step?
Nonsurgical options such as adjusting aggravating loads and an appropriate exercise programme are generally considered. Improving strength and movement control may help. The programme's effects are monitored; improvement is not expected immediately or within the same timeframe for everyone.
Arthroscopy may be considered in selected patients with persistent symptoms despite adequate treatment and clinical findings consistent with a symptomatic plica. Surgery is neither recommended for everyone whose MRI mentions a plica nor a guarantee of pain relief.
Sources
This article provides general information. Individual diagnosis and treatment require a clinical assessment.