Test Ride for my Injured Left Arm (Klausenpass)

On 20th July I have been hit by a car; since then left shoulder feels instable and less sensitive.
So today I rode up Klausenpass and on the downhill section I set a new personal record, which is in the first thrid of all rides on Strava.

On the uphill part, I was only able to go out of the sadle for 30 - 40 seconds instead of 2 min. And my right arm started hurting strongly. While the left arm felt all the time week.