Last time I covered some basic facts about the rings: 1  They're not solid, but rather are composed of chunks of water ice, ranging from the size of an automobile or small building down to the an inch or smaller (including some microscopic dust). 2  The rings are very thin -- maybe just 100 yards or so in thickness.
A bunion (hallux valgus) is a deformity of the base joint of the big toe. The cause is not clear in many cases. The deformity may cause the foot to rub on shoes, which may cause inflammation and pain. Good footwear is often all that is needed to ease symptoms.
Movement of the foot and toes requires the action of many muscles. Differentiate among the muscles that cause feet to move. 1  The hallux or large toe is extended by the extensor hallucis brevis on the top of the foot.  The flexor hallucis brevis and abductor hallucis flex and abduct the big toe. The adductor hallucis adducts the big toe.