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.
Digital Vision. It's that time of year -- your refrigerator is filling up with wedding invitations, and between shower gifts and wedding gifts, well, your wallet is hurting. Don't worry -- you're not alone! According to a 2016 survey by RetailMeNot, the average person spends anywhere between $45 to $195 on a wedding gift.