nylon sutures on the inside??

my dr used nylon sutures on the inside of a muscle flap and now they are working their way out.  needless to say they are chewing everything up on the way out making the flap a complete fail. what happened??? why would a dr do this??

[Dr Santos]

Hi,
How are you? A nylon suture is a non-absorbable suture  usually indicated to join two edges of a wound together.  Its durability  and ability to close wounds in the skin and vital organs which undergo a great deal of movement and stress help provide strength and support. Some can be left in the wound permanently or may be removed once the wound has begun to heal. If it the suturing was not successful or  damaging the flap itself, it is best that you have this checked by your surgeon for proper management and to ease any doubts. Take care and do keep us posted.