By definition, the etiology of primary osteoarthritis is unknown, but the pathology and pathogenesis of osteoarthritis have been extensively studied. [5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15] Historically, osteoarthritis has been divided into primary and secondary forms, although this division is somewhat artificial.
What's your relationship to the couple? - While the average gift ranges from $50 to $100 for those under 30, expect to spend $100 or more if you're close friends with the couple and are more established financially. For your nearest and dearest friends and relatives, gift costs can range from over a $100 to $200 or more.
Monetary wedding gifts should be based on the guest's relationship to the bride or groom, according to Summer Krecke, deputy editor of WeddingChannel.com. For a coworker's wedding, you should spend $75 to $100; a relative or friend, $100-$125; a close friend or relative, anywhere from $100 to $150 or more.