AB1286-HPR EXAMINATION OF DYNAMIC GRIP ENDURANCE RELATED FACTORS IN PATIENTS WITH PSORIATIC ARTHRITIS
Authors: İ. Naz Gürşan, M. Köprülüoğlu, D. Solmaz, S. Akar
Journal: Annals of the Rheumatic Diseases (2020)

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&lt;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&gt;0.05). Table 1. Examination Of Dynamic Grip Endurance Related Factors In Patients Variables (n=19 ) Dynamic Grip Endurance Dominant Dynamic Grip Endurance Dominant (% ) Dynamic Grip Endurance Non- Dominant Dynamic Grip Endurance Non- Dominant (% ) DASH r=-0.525 r=0.524 r=-0.608 r=0.153 p=0.021 p=0.021 p=0.006 p=0.532 Perceived Disability of Hand r=-0.466 r=0.326 r=-0.509 r=0.414 p=0.044 p=0.174 p=0.026 p=0.078 Pain in Hand Joints r=-0.363 r=0.472 r=-0.316 r=0.542 p=0.127 p=0.041 p=0.188 p=0.017 Number Of Tender Hand Joint r=-0.641 r=0.569 r=-0.580 r=0.268 p=0.003 p=0.011 p=0.009 p=0.267 Number Of Swollen Hand Joint r=-0.349 r=0.359 r=-0.526 r=-0.094 p=0.143 p=0.131 p=0.021 p=0.702 Joint Position Error Dominant r=0.147 r=-0.127 r=0.412 r=-0.026 p=0.548 p=0.606 p=0.080 p=0.915 Joint Position Error Non-dominant r=0.213 r=-0.339 r=0.047 r=0.350 p=0.381 p=0.156 p=0.848 p=0.141 Grip Strength Dominant r=0.960 r=0.033 r=0.722 r=-0.035 p&lt;0.001 p=0.892 p&lt;001 p=0.887 Grip Strength Non- Dominant r=0.742 r=-0.151 r=0.967 r=0.035 p&lt;0.001 p=0.538 p&lt;0.001 p=0.887 2 Point Dominant r=0.134 r=-0.561 r=0.344 r=-0.240 p=0.585 p=0.012 p=0.149 p=0.322 3 Point Dominant r=0.539 r=-0.444 r=0.752 r=-0.318 p=0.017 p=0.057 p&lt;0.001 p=0.185 Lateral Dominant r=0.354 r=-0.516 r=0.355 r=-0.116 p=0.137 p=0.024 p=0.136 p=0.637 2 Point Non-Dominant r=0.622 r=-0.200 r=0.742 r=0.031 p=0.004 p=0.411 p&lt;0.001 p=0.901 3 Point Non Dominant r=0.633 r=-0.216 r=0.845 r=0.013 p=0.004 p=0.375 p&lt;0.001 p=0.957 Lateral Non Dominant r=0.459 r=-0.366 r=0.579 r=-0.063 p=0.048 p=0.123 p=0.009 p=0.783 CRP r=-0.280 r=-0.008 r=-0.386 r=0.023 p=0.246 p=0.974 p=0.102 p=0.926 DASH: Disability of Arm, Shoulder and Hand Survey, *Spearman Correlation Test Conclusion: 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. References: [1]BELSKY, Mark R., et al. Hand involvement in psoriatic arthritis. The Journal of hand surgery, 1982, 7.2: 203-207. Disclosure of Interests: None declared