Safe to Play Contact Sports After Otoplasty?

Activity and sports are restricted afer surgery to allow uninterrupted healing in the ears' new positions which are maintained entirely by stitches. AS the healing proceeds, typically for about 6 weeks, activity can be increased and return to normal.

Thanks for the question. After 6 weeks your surgery area is totally healed and yes you can do boxing and also do other activities. I wish you all the best.

It’s not unusual for younger
patients who undergo otoplasty to participate in sports.  These patients are usually eager to
return to athletics as soon as possible following otoplasty.  In most cases patients are advised to
avoid contact sports for 6-8 weeks and non-contact sports
for 2 to 3 weeks following otoplasty.

                  Boxing,
kick boxing and wrestling represent special situations since the ears can
suffer significant trauma with these sports.  For this reason, these sports should not be resumed for 3 to
4 months following surgery and head gear should be worn whenever possible.

                  If
you’re an athlete who’s considering otoplasty, it’s important to discuss this
issue with your plastic surgeon. 
Your surgeon should be able to give you specific information about when
it’s safe to participate in sports.

After otoplasty it is a good idea to avoid getting the ears smacked for a month or so. This typically means no boxing, wrestling, cage fighting, etc. Long-term the ears are fine for any kind of sport.

If you are going to go through the time, energy and costs of having an otoplasty, the worst thing you could do afterwards is have someone potentially directly strike the ear. At the very least this will certainly cause a distortion of the ear, and at worst, completely destroy the otoplasty.
Other sports like soccer, basketball, etc, are fine after a few months, but I would recommend no more boxing if you have this procedure done.