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.
If it's a co-worker or a distant friend, TheKnot.com recommends spending at least $75-$100 on the wedding present. If you're attending a relative or a friend's wedding, the wedding website suggests somewhere between $100 and $125. TheKnot.com also took the pulse of what real brides and grooms have spent on weddings in the past in its registry study. On average, friends spend $79 on the bride and groom's present, said Miles. Family members, meanwhile, spend an average of $146. Hill says, though, overall wedding guests should assess their budget and how well they know the bride and groom.