TW2 Method for Bone Age Assessment: A Comprehensive Guide

The TW2 method for bone age assessment involves the following steps:

1. Obtain a hand radiograph of the patient.

2. Identify the carpals and metacarpals on the radiograph.

3. Assign a score to each bone based on its level of development. The score ranges from 1 (least developed) to 5 (most developed).

4. Add up the scores for all the bones to get a total score.

5. Consult a reference chart or table to determine the bone age based on the total score.

6. Compare the bone age to the chronological age of the patient to assess whether the patient is developing normally or has a bone age delay or advancement.

The TW2 method is widely used for bone age assessment in children and adolescents, particularly for monitoring growth and development in cases of delayed or accelerated growth. It is a relatively simple and non-invasive method that can provide useful information for clinical decision-making.