These treatments cause bleeding and healing with fibrocartilage or scar cartilage which is not as resilient as normal hyaline cartilage. These treatments remain the first line of treatment for isolated lesions of articular cartilage in the knee.
The original Constitution required direct taxes to be apportioned among the states in accordance with population. An income tax is not so apportioned, so the amendment was needed to authorize such parts of the income tax as would constitute direct taxes.
A Constitutional amendment to clarify the way votes are cast in the  Electoral College was necessary because it was unclear as to which  votes were for the president and whiâ¦ch votes were for the vice  president. This was accomplished through the Twelfth Amendment.