I want to increase my height, is there any...

what are the ways to increase height after 21 years old :
its almost impossible to increase height in a high effect by natural means or some remedies as non-medical websites says 
- natural ways and healthy diet and exercise is great advice to maintain your current height , and maybe increase your height just alittle bit that you wont even notice after great effort 
can injection help you in this case ?
injection isnt an option in this case , and its not recommanded because it may have huge side effects and complications 
what is the medical ways to increase height :
the medical way a type of surgery called : limb lengthing surgery which will increase your height around 10 cm or as much as you want in reasonable range to your body 
what is the complications of the surgery :
1. bleeding 
2. nerve damage 
3. blood vessels damage 
3. infection
4. poor bone healing