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Latar Belakang: Osteoarthritis lutut merupakan penyakit sendi degeneratif yang banyak dijumpai sebagai akibat dari hancurnya tulang rawan artikular secara progresif dan penurunan cairan sinovial yang melumasi persendian dan dimanifestasikan dengan nyeri dan kekakuan pada sendi lutut yang dapat mengganggu aktivitas sehari-hari penderita. Salah satu tindakan non farmakologi yang dapat mengurangi nyeri dan kekakuan sendi adalah Latihan isometric quadriceps. Gerakan yang berulang pada otot quadriceps akan meningkatkan kerja otot-otot sekitar sendi lutut sehingga melancarkan aliran darah yang akan meningkatkan metabolisme dan merangsang pengeluaran hormon endorphin yang dapat menurunkan sensasi nyeri dan kekauan sendi lutut. Tujuan Penelitian: Mengetahui penurunan nyeri dan kekakuan sendi lutut setelah melakukan latihan penguatan isometric quadrisep pada klien Osteoarthritis lutut di Wilayah Puskesmas Gamping II Sleman Yogyakarta. Metode Penelitian: Jenis penelitian ini quasi experiment pretest-posttest with control group design . Populasi dalam penelitian ini adalah 52 responden yang menderita osteoarthritis lutut yang berada di wilayah puskesmas Gamping II Sleman Yogyakarta, dibagi dalam kelompok perlakuan dan kelompok kontrol. Responden kelompok perlakuan diberikan latihan isometric quadriceps seminggu dua kali selama empat minggu dan kelompok kontrol minum obat dan melakukan aktifitas sehari hari seperti biasa. Pre dan post test dilakukan pada kedua kelompok untuk mengetahui penurunan skala nyeri dan kekakuan sendi lutut. Analisis data menggunakan analisis Wilcoxon Signed Rank Test, Paired T-test dan Mann whitney pada taraf signifikansi p-value 0,05. Kesimpulan: Ada perbedaan yang signifikan penurunan skala nyeri dan kekakuan sendi lutut pada penderita osteoarthritis lutut yang diberikan latihan isometric quadriceps dengan yang tidak diberikan latihan. Kata Kunci: osteoarthritis lutut, nyeri sendi lutut, kekakuan sendi lutut, latihan isometric quadriceps. ABSTRACT Background: Osteoarthritis is a degenerative joint disease that is commonly seen as a result of progressive destruction of articular cartilage and a decrease in synovial fluid that lubricates joints.One of non-pharmacological intervention that can relieve is isometric quadriceps. Repetitive movements of quadriceps muscle will increase muscle flexibility around the knee joint so that blood flow improves metabolism and also release of endorphin hormones that can reduce  knee joint  pain and stiffness. Objective: To determine the decrease of knee  joint pain and stiffness  after performing isometric quadrisep muscle strengthening exercises among  knee osteoarthritis clients at  Puskesmas Gamping II Sleman Puskesmas  Yogyakarta Research Method: This research was a quasi-experimental pretest-posttest with control group design. The population in this study were 52 respondents knee osteoarthritis recruited at Puskesmas Gamping II Sleman Yogyakarta, divided into treatment and control groups. Respondents in the treatment group were given quadriceps isometric exercise twice a week for four weeks and the control group took medication and performed daily activities as usual. Pre and post tests were carried out in both groups to determine the decrease of knee joint pain and stiffness. Researcher was using data analysis :  Wilcoxon Signed Rank Test, Paired T-test and Mann Whitney analysis at p-value significance level 0.05. Conclusion: There were significant differences in the decrease of pain scale and knee joint stiffness among knee osteoarthritis clients who were given quadriceps isometric excercise with those who were not given exercise Keywords: Knee osteoarthritis, Knee joint pain, Knee joint stiffnes, Quadriceps Isometric Exercise.

Pengaruh Latihan Isometric Quadriceps Terhadap Penurunan Skala Nyeri & Kekakuan Sendi Lutut Pada Klienosteoarthritis Lutut Di Wilayah Puskesmas Gamping Ii Sleman Yogyakarta