AB1286-HPR EXAMINATION OF DYNAMIC GRIP ENDURANCE RELATED FACTORS IN PATIENTS WITH PSORIATIC ARTHRITIS

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Background:Psoriatic arthritis (PsA) is a disease manifested by destruction of articular cartilage, subchondral bone, and fibrosis of the joint capsule without excessive synovitis (1). Most of studies that examining hand in PsA are radiographic, ultrasonographic, magnetic resonance imaging research and there is little knowledge about functional assessment of hand. According to our knowledge, there is no study assessing grip endurance in patients with PsA.Objectives:To assess dynamic grip endurance related factors in patients with PsA.Methods:A total of 19 patients [Mean age; 53.5±12.6 years, 14 women(73.7%), 5 men(26.3%)] diagnosed according to CASPAR criteria were included this study. Clinical and demographic characteristics were recorded. Dynamic grip endurance test was assessed with 10- repetition dynamic endurance test using a hand dynamometer (Lafayette Proffessional Hand Dynamometer, USA). Grip strength was examined by hand dynamometer and pinch strength was examined by pinchmeter (Lafayette, USA). Goniometer was used to assessment wrist position sense. Disability of Arm, Shoulder and Hand Survey (DASH) was used to determine disabilities and symptoms of upper extremity. We used Spearman’s Rank Correlation Coefficient for data analysis.Results:Dynamic grip endurance was negatively correlated with DASH score, perceived disability of hand, number of tender hand joints and positively correlated with grip strength, 3 point pinch strength on both dominant and non-dominant sides (p<0.05, Table 1). Dynamic grip endurance was not correlated with CRP level and joint position error on both dominant and non-dominant sides (p>0.05).Table 1.Examination Of Dynamic Grip Endurance Related Factors In PatientsVariables(n=19)Dynamic Grip EnduranceDominantDynamic Grip EnduranceDominant(%)Dynamic Grip EnduranceNon- DominantDynamic Grip EnduranceNon- Dominant(%)DASHr=-0.525r=0.524r=-0.608r=0.153p=0.021p=0.021p=0.006p=0.532Perceived Disability of Handr=-0.466r=0.326r=-0.509r=0.414p=0.044p=0.174p=0.026p=0.078Pain in Hand Jointsr=-0.363r=0.472r=-0.316r=0.542p=0.127p=0.041p=0.188p=0.017Number Of Tender Hand Jointr=-0.641r=0.569r=-0.580r=0.268p=0.003p=0.011p=0.009p=0.267Number Of Swollen Hand Jointr=-0.349r=0.359r=-0.526r=-0.094p=0.143p=0.131p=0.021p=0.702Joint Position ErrorDominantr=0.147r=-0.127r=0.412r=-0.026p=0.548p=0.606p=0.080p=0.915Joint Position ErrorNon-dominantr=0.213r=-0.339r=0.047r=0.350p=0.381p=0.156p=0.848p=0.141Grip Strength Dominantr=0.960r=0.033r=0.722r=-0.035p<0.001p=0.892p<001p=0.887Grip Strength Non- Dominantr=0.742r=-0.151r=0.967r=0.035p<0.001p=0.538p<0.001p=0.8872 Point Dominantr=0.134r=-0.561r=0.344r=-0.240p=0.585p=0.012p=0.149p=0.3223 Point Dominantr=0.539r=-0.444r=0.752r=-0.318p=0.017p=0.057p<0.001p=0.185Lateral Dominantr=0.354r=-0.516r=0.355r=-0.116p=0.137p=0.024p=0.136p=0.6372 PointNon-Dominantr=0.622r=-0.200r=0.742r=0.031p=0.004p=0.411p<0.001p=0.9013 PointNon Dominantr=0.633r=-0.216r=0.845r=0.013p=0.004p=0.375p<0.001p=0.957LateralNon Dominantr=0.459r=-0.366r=0.579r=-0.063p=0.048p=0.123p=0.009p=0.783CRPr=-0.280r=-0.008r=-0.386r=0.023p=0.246p=0.974p=0.102p=0.926DASH: Disability of Arm, Shoulder and Hand Survey, *Spearman Correlation TestConclusion:Our findings suggest that dynamic grip endurance is associated with different functional parameters of the hand and worsening clinical parameters. Examining dynamic grip endurance might be a guide in creating an exercise program for clinicans in rehabilitation of patients with PsA.