It most often develops in adults over the age of 40. It is also more common in women and in people with a family history. However, it can occur at any age due to injury or other joint-related diseases such as gout or rheumatoid arthritis. The third whorl of an flower will be the stamen, the male reproductive part. The stamen is made of the thin vertical thread-like structure called a filament topped using a circular or oblong structure called an anther. The anther produces pollen, which could be the male contribution on the reproduction process in plants. In this sexy iPhone app, iKamasutra Lite brings the famed Kama Sutra sex positions in your iPhone. Designed to add spice to the romance together with your significant other, iKamasutra Lite allows you to browse positions to test. The app may even monitor positions you've already tried, keep your favorites and allow you to make a "to do" list. Looking for new things to use, but can't pick? You can shake the phone to get a random position.