Transthyretin amyloidosis is a slowly progressive condition characterized by the buildup of abnormal deposits of a protein called amyloid (amyloidosis) in the body's organs and tissues.
If you play tennis, you may be familiar with the different racket customizing choices you have -- common choices include string type, gauge and tension. Not so common is an inexpensive device called a shock absorber or vibration dampener. These devices have no impact on your performance, but some players can't play without one. It's a personal choice, and if you do use a dampener, its placement must comply with the rules of the International Tennis Federation.
Sizing a tennis racket for an adult or child is not an exact science and not a one-size-fits-all process. Manufacturers make rackets in a variety of grip, length and head sizes, and provide guidelines to help players choose the right racket.or correct sizing, manufactures offer guidelines to match a child's age and height with the correct racket length. Rackets with a length of 19 or 21 inches are designed for children age 5 and younger and 44 inches tall or shorter.