ULTRASONOGRAPHIC EVALUATION OF FEMORAL CARTILAGE THICKNESS IN PATIENTS WITH POLYCYSTIC OVARY SYNDROME

Increased femoral cartilage thickness in acne patients using isotretinoin: could it be a sign of early osteoarthritis?

Vitamin A derivatives have inhibitory effects on cartilage tissue, such as decreasing chondrocyte proliferation and collagen synthesis, and increasing the loss of glycosaminoglycans and proteoglycans. Therefore, isotretinoin (a vitamin A derivative) may play a role in the pathogenesis of cartilage-related diseases like osteoarthritis by affecting the balance of cartilage tissue. The aim of this study was to evaluate the distal femoral cartilage thickness in acne patients under the systemic isotretinoin therapy and to determine whether it constitutes a risk factor for the development of osteoarthritis. The study included 52 patients (42 female, 10 male, mean age 23.31 ± 3.89 years) who were prescribed systemic isotretinoin for acne and completed at least 3 months of treatment, along with 45 healthy controls ((35 female, 10 male, mean age 23.85 ± 4.77 years). Bilateral distal femoral cartilage thickness was measured by ultrasonography before isotretinoin treatment and after the completion of the third month of treatment. After treatment, a statistically significant increase was found in the thickness of the right medial, right lateral, left medial, left lateral, and left intercondylar cartilage (p = 0.014, 0.012, 0.019, 0.027, 0.002, respectively). There was also an increase in the right intercondylar cartilage thickness, but this was not statistically significant (p = 0.1). Systemic isotretinoin seems to make cartilage thicker. The increase in femoral cartilage thickness observed after short-term isotretinoin treatment might be an indicator of very early-stage osteoarthritis. Extended follow-up studies with larger participant pools are necessary to substantiate this result.

ULTRASONOGRAPHIC EVALUATION OF FEMORAL CARTILAGE THICKNESS IN PARTICIPANTS WITH ASYMPTOMATIC HYPERURICEMIA: A CASE-CONTROL STUDY

The aim was to evaluate the effect, if any, of asymptomatic hyperuricemia on distal femoral cartilage thickness through musculoskeletal ultrasonography. A total of 66 participants were evaluated in this prospective, controlled study, including 33 asymptomatic hyperuricemic patients who presented at our outpatient clinic between January and April 2020, and 33 normouricemic subjects matched for age, gender and body mass index. Participants with systemic diseases affecting uric acid level such as chronic renal failure, psoriasis, gout, etc., participants using drugs that can affect uric acid level, and those with knee complaints were excluded from the study. Cartilage thickness measurements were taken using musculoskeletal ultrasonography from the right medial condyle, right lateral condyle, right intercondylar area, left medial condyle, left lateral condyle and left intercondylar area. Distal femoral cartilage thickness was lower in all measurement areas in the asymptomatic hyperuricemia group than in the normouricemic group (p<0.05 all). No correlation was noted between uric acid levels and cartilage thickness in all measurement areas in either the asymptomatic hyperuricemic or normouricemic group (p>0.05 all). We think that distal femoral cartilages seem to be thinner in participants with asymptomatic hyperuricemia. Longitudinal studies are needed to determine whether asymptomatic hyperuricemia will lead to knee osteoarthritis in individuals, although we believe that people with asymptomatic hyperuricemia should be informed accordingly in order to prevent development of potential knee osteoarthritis.

Polycystic ovary syndrome and (pre)osteoarthritis: assessing the link between hyperandrogenism in young women and cartilage oligomeric matrix protein as a marker of cartilage breakdown

INTRODUCTION

OBJECTIVES: Our aim was to analyze the link between hyperandrogenism and early clinical manifestations of osteoarthritis (OA), knee cartilage thickness, and serum cartilage oligomeric matrix protein (sCOMP) levels in patients with polycystic ovary syndrome (PCOS) and to compare them with healthy volunteers.

METHODS

Fifty-four PCOS patients who met the Rotterdam criteria with phenotypes A, B, and C were included. They were compared with 26 age- and body mass index (BMI)-matched controls. Detailed anthropometric measurements and clinical evaluation for hyperandrogenism were performed for all participants who also filled in the Knee Injury and Osteoarthritis Outcome Score (KOOS) questionnaire. Furthermore, laboratory tests including sCOMP and hormone quantification were performed in a fasting stage. Finally, an ultrasound assessment was carried out in randomly selected 56 study participants.

RESULTS

PCOS women reported more prominent knee-related symptoms (p = 0.035) and more impaired activities of daily living (ADL) (p = 0.001) than controls. Cartilage thickness of the left and right medial condyle and left lateral condyle was significantly greater in PCOS group (n = 41) than in control group (n = 15) (p = 0.05, p = 0.006, and p = 0.036, respectively). COMP correlated significantly and negatively with testosterone levels (p = 0.029, r =  - 0.297) in women with PCOS and the correlation remained significant after controlling for BMI.

CONCLUSIONS

Women with PCOS may experience knee-related symptoms and impaired ADL. They had greater knee femoral cartilage thickness. Although sCOMP levels did not significantly differ between the groups, lower levels of sCOMP may be inherent to PCOS patients with higher testosterone levels. Key Points • Although PCOS patients may experience more prominent knee related symptoms, their femoral cartilage of the knee joint is found thicker than controls. • PCOS patients did not have significantly elevated levels of sCOMP. • Lower sCOMP levels were related to higher testosterone levels.