disease has location arthropathy patellofemoral pain syndrome https://www.malacards.org/card/patellofemoral_pain_syndrome SCTID:430725003 A syndrome characterized by retropatellar or peripatellar pain resulting from physical and biochemical changes in the patellofemoral joint. The pain is most prominent when ascending or descending stairs, squatting, or sitting with flexed knees. There is a lack of consensus on the etiology and treatment. The syndrome is often confused with (or accompanied by) chondromalacia patellae, the latter describing a pathological condition of the cartilage and not a syndrome. MESH:D046788 EFO:1001092 DOID:14284 MONDO:0006894 MEDGEN:164080 MedDRA:10049143 UMLS:C0877149 patellofemoral joint