MICROANATOMY

Detailed explanation-1: -A severe injury could cause your nail to fall off. Once your nail matrix heals, your nail will usually start to grow again. It may take several weeks before you see your new nail appear. In cases of severe nail matrix damage, some or all of your nail may not grow back.

Detailed explanation-2: -The germinal matrix is responsible for 90% of the nail growth. The nail is formed by the keratinous mass pressed between the nail bed and the eponychial fold and grows distally.

Detailed explanation-3: -In most cases, the nail will grow back from the area under the cuticle (the matrix). A fingernail takes about 4 to 6 months to grow back. A toenail takes about 12 months to grow back. If the nail bed or matrix was damaged, the nail may grow back with a rough or abnormal shape.