ECONOMIC BURDEN OF OSTEOARTHRITIS MANAGEMENT IN ISLAMABAD AND RAWALPINDI, PAKISTAN: A COMPARATIVE PHARMACOECONOMIC ANALYSIS OF PHARMACOTHERAPY VERSUS TOTAL KNEE ARTHROPLASTY ACROSS PUBLIC AND PRIVATE HEALTHCARE SECTORS. FMHR [Internet]. 2026 Mar. 27 [cited 2026 Nov. 8];4(3):4366-78. Available from: https://fmhr.net/index.php/fmhr/article/view/3798