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.
Brides-to-be and expecting parents can also expect to be showered with gifts. Again, how much to spend depends on how close you are to the person. The consensus on Baby Center suggests: $20-$25 for a co-worker or acquaintance, $50 for a close friend, or $100 for a best friend or family member.s for how much to spend: Wedding guests say theyâll spend an average of $108 on gifts, up 15% from 2012. Not all gifts are created equal, however, and consumers will weigh factors like relationship to the bride or groom (45%) and budget at the time of the wedding (33%) before deciding how much to spend.