[Pressure digit sign in patients with knee osteoarthritis].

Introduction: it is estimated that 302 million people worldwide are affected by osteoarthritis, corresponding to 60% osteoarthritis (OA) of the knee, which responsible 80% of disability in older adults, hence the importance of the association of the sign with the early inflammatory process in OA.

Objective: to determine the association of digital pressure sign in patients with and without osteoarthritis of the knee.

Material and methods: this was an observational, comparative cross-sectional study, carried out in patients with and without a diagnosis of knee OA, to whom the digital pressure sign was determined. The sample was calculated with the formula for two proportions, obtaining a total of 40 participants per group, obtained by non-probabilistic sampling for convenience. The statistical analysis included frequencies, percentages, 2 and OR. The bioethics regulations in force were respected.

Results: the study included 80 participants, with a median age of 48.9 years (RQI 46-53.7), 73.1% were predominantly female sex (38), and a statistically significant association was found between patients with OA and the presence of digital pressure sign, 2 4.62 and p value = 0.41, OR of 2.65.

Conclusions: the presence of digital pressure sign increases the probability of having OA 2.65 times more.