SAT0571 The radiological, clinical and functional properties of hand osteoarthritis and their relation with radiological findings in a turkish population: tlar-oa study
Authors: M.T. Duruöz, D. Erdem, T. Tuncer, L. Altan, F. Ayhan, A. Bal, L. Cerrahoglu, E. Capkin, R. Cevik, D. Dulgeroglu, S. Gursoy, S. Hizmetli, C. Kacar, E. Kaptanoglu, T. Kaya, H. Kocabaş, K. Nas, S. Ozcakir, D. Sindel, O. Sahin, G. Tasci Bozbas, C. Tikiz, H. Ugurlu
Journal: Annals of the Rheumatic Diseases (2018)

<h3>Objectives</h3> To evaluate the radiological, clinical and functional properties of hand osteoarthritis and to assess their relationship in a Turkish population. <h3>Methods</h3> The subjects with hand OA recruited into the study from the multi-centre national osteoarthritis cohort by the Turkish League Against Rheumatology (TLAR–OA). The demographic characteristics, body mass index (BMI), smoking, finger ratio,(2nd to 4th finger lenght), grip strengths with Jamar dynamometer, hand pain duration (month), hand pain severity (visual analogue scale; 0–100 mm) were evaluated. The radiological stage of hand OA was assessed according to the Kellgren Lawrence OA staging. The hightest stage among the joints involvement was noted as the OA stage of the hand. The functional disability concerning to hand involvement was assessed with Duruöz Hand Index (DHI). The SPSS 24.0 statistical package was used for analysis. The descriptive analysis was performed for all parameters. Spearman's correlation coefficient was used to assess the relation between quantitative variables. <h3>Results</h3> A total of 364 subjects (330 female, 34 male) from 15 centres with mean of age 62.96 (SD: 10.22) were recruited into the study. The mean of BMI was 29.54 (SD: 4.51) and the percentage of smoking person was 6.3%. The mean of 2nd finger to 4th finger ratio of the patients was 0.96 (SD: 0.05). The mean of grip strengths of the right hand and left hand were respectively 15.55 kg (SD: 12.88) and 14.13 kg (SD: 11.39), which is lower than normal population.<sup>1</sup> The median pain duration of hand was 24 months (min-max: 1–480 months). The mean VAS score of pain was 5.05 (SD: 2.33). The mean DHI score was 16.82 (SD: 15.53). The patients' radiological OA involvement stages (2,3 and 4) of right and left hands were respectively 26.1% and 23.6% (stage 2); 22.5% and 20.9% (stage 3); 13.2% and 12.4% (stage 4) according to the Kellgren Lawrence scoring. The radiological stages of right and left hands respectively had poor correlation with VASpain (rho=0.152, p=0.010; rho=0.158, p=0.009); low but significant correlations with Duruöz Hand Index (rho=0.257, p&lt;0.0001; rho=0.267, p&lt;0.0001) and low but significant correlations with the duration of pain (rho=0.231, p&lt;0.0001; rho=0.181, p=0.003). There were no significant correlations between the radiological stage of hand OA and BMI, finger ratio, grip strength (p&gt;0.05). <h3>Conclusions</h3> Although the subjects with hand OA had pain, low grip strenght and hand disability; the radiological findings had meaningful relations with only functional involvement and pain duration in our population. <h3>Reference</h3> [1] Massy-Westropp N, et al. Hand grip strenght: age and gender stratified normative data in a population-based study. BMC Res Notes2011;4:127. <h3>Disclosure of Interest</h3> M. T. Duruöz Grant/research support from: ABVIE, Consultant for: NOVARTIS, Speakers bureau: ABDI IBRAHIM, D. Erdem: None declared, T. Tuncer: None declared, L. Altan: None declared, F. Ayhan: None declared, A. Bal: None declared, L. Cerrahoglu: None declared, E. Capkin: None declared, R. Cevik: None declared, D. Dulgeroglu: None declared, S. Gursoy: None declared, S. Hizmetli: None declared, C. Kacar: None declared, E. Kaptanoglu: None declared, T. Kaya: None declared, H. Kocabaş: None declared, K. Nas: None declared, S. Ozcakir: None declared, D. Sindel: None declared, O. Sahin: None declared, G. Tasci Bozbas: None declared, C. Tikiz: None declared, H. Ugurlu: None declared