The 18-year-old was one of two teens injured in an incident on Stannington Road, Stannington, last Saturday night.
A 17-year-old boy was taken to hospital with knife wounds to his back and leg and while policeÂ officers were in A&E with him an 18-year-old arrived seeking treatment for a serious arm injury.
Remembering 'beautiful' and 'amazing' Blake and Tristan Barrass three years on from tragic Sheffield brothers' funeral
Sheffield Council employees sacked as fraud increases including theft and excessive internet use during work
EuroMillions: Mystery winner from South Yorkshire has won £79,242.50 on The National Lottery
Power cut Sheffield: Hundreds of homes in Hillfoot area without power ahead of 28C heatwave today
Water Slacks: No arrests made during armed police raid in Sheffield neighbourhood
Detectives believe both teens were injured in the same incident.
ON THE RUN: Sheffield men wanted for murders, drug and firearm offences The younger teenager was discharged from hospital and arrested on suspicion of possessing Class A drugs with intent to supply.
He has since been released pending further enquiries.
The older teen remains in hospital.
The double stabbing is not being linked with any previousÂ incidents.
Anyone with information should call South Yorkshire Police on 101 and quote incident 1,093 of October 20 or Crimestoppers, anonymously, on 0800 555 111.