Correlation Between Severity of Symptoms and Quality of Life in Patellofemoral Pain Syndromes: A Cross-Sectional Study

Abstract

BackgroundPatellofemoral pain syndrome (PFPS) is one of the conditions frequently encountered by musculoskeletal physiotherapists. The intensity and severity of pain and symptoms seen in PFPS affect the quality of life (QOL). This concept has not yet been investigated with the use of reliable and valid scales. Hence, the objective of this study is to find out the correlation between the severity of symptoms and QOL in patients with PFPS.MethodologyIn this cross-sectional study, 63 patients with PFPS, aged between 40 and 60 years, who visited Sir Sayajirao General Hospital, Vadodara, from December 2018 to June 2019, were included. The questionnaires included in the study comprised the Numerical Pain Rating Scale (NPRS), the Knee Osteoarthritis Outcome Survey-Patellofemoral Subscale (KOOS-PF), and the Short Form-36 (SF-36). Spearman’s rank correlation coefficient was used to find the correlation.ResultsNPRS was found to have a fairly positive correlation with the functional scale KOOS-PF, with a \textit{P}-value of 0.008. Among the eight components of SF-36, Physical Function and General Health scores exhibited a fairly positive correlation with NPRS, with p-values of 0.016 and <0.001, respectively. However, no correlation was observed between NPRS and the other components of SF-36.ConclusionsThis study concluded that patients with PFPS with different levels of pain exhibit different functional and QOL limitations. Furthermore, studies investigating the causes of the negative correlation should be conducted to have a better understanding of QOL in PFPS.