3 days after the second shot, she split her knee cap wide open and went to the ER; Her hand stiffened up; This is a spontaneous report from a contactable consumer (patient). A 73-years-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot Number: EN6203; Expiration Date: 31May2021), dose 2 intramuscular, administered in arm left on 01Mar2021 11:30 as second dose, single for covid-19 immunisation (at the age of 73-year-old) at a Hospital clinic (initially stated 12:00, but believed it was 11:30). Medical history included hand surgery a year ago in 2020 (went to the doctors a week before she was due for the Pfizer shot and at that appointment, she could not bend her fingers to make a fist in her hand because it was so stiff. She had months and months of therapy and she still couldn't make a fist. She got the COVID shot the next week and the day after the shot, her hands were normal, and she could form a fist. She clarified she actually woke up in the middle of the night and woke her husband up and said "look at this" because she was able to make a fist. It was 3 am on 06Feb2021 when she woke up and noticed this effect). No investigation assessment. There were no concomitant medications (no other products). Previously, patient received PFIZER-BIONTECH COVID-19 VACCINE (Batch/Lot Number: EL9265; Expiration Date: 31May2021), dose 1 intramuscular, administered in arm on 05Feb2021 as first dose, single for covid-19 immunisation (reported a good effect, not a bad effect, she was shocked at the effect it had on her) at a facility. No Prior Vaccinations (within 4 weeks), no adverse event following prior vaccinations. No additional vaccines administered on same date of the Pfizer Suspect. The COVID vaccine was the same arm as her bad hand. The patient wanted to add that everything was fine, she never had a reaction to either shot. However, on 04Mar2021, the patient 3 days after the second shot, she split her knee-cap wide open and went to the emergency room. She got a tetanus vaccine at the same hospital where she received the COVID-19 vaccines as therapeutic measures for knee injury and her hand stiffened up (start date: on unspecified date in 2021) and it took 2 days for it to go back to normal. She clarified 2 days after the tetanus vaccine, her hand went back to normal, and she was able to make a fist again. Her hand had continued to stay normal, and she clarified that nobody believed it when they look at her hand because they have seen her hand for a year not be able to make a fist. She was only given a piece of paper that said she received the tetanus shot. She asked them if she could receive a tetanus vaccine on top of the COVID vaccine and was told it didn't make any difference. The patient was a little confused, she saw 31May2021 by the expiration date but down on the bottom it said it expired on 01Mar2021, which is the day she got the shot, so she was wondering of did that mean she received an expired vaccine. No relevant tests done for adverse event. The outcome for knee injury was unknown and her hand stiffened up was recovered on an unspecified date. No follow up attempts are possible. No further information is expected.