right knee felt like right under the Knee cap felt like it was being sawed off/It happened like six timesThe pain was so horrible and I felt like grinding cartilage; This is a spontaneous report from a contactable consumer(patient). A 68-year-old female patient received first dose of BNT162B2(Pfizer-BioNTech Covid-19 Vaccine, Solution for injection, Lot number EW0217), via an unspecified route of administration on 28Jun2021(at the age of 68-years-old) as a single dose for COVID-19 immunization. The patient medical history and concomitant medications were not reported. On 28Jun2021, the patient right knee felt like right under the Kneecap felt like it was being sawed off/It happened like six times. The pain was so horrible and I felt like grinding cartilage. Reporter stated that "I am just going to tell you a side effect. I think it was because I do not want to go through a million hoops but I mean I appreciate you making the drug and I am certainly going to get the second dose 19Jul2021 but this I never heard of but I got vaccinated Monday 28Jun2021 or may be an hour after I got home. I just went to lay down on my bed because I was just (incomplete sentence), it was a hot day so that's awesome because I cannot tell if it is from the vaccine or just the weather. So I just lay down for like I always do, didn't do anything odd, just laid there and then for maybe 10 minutes and when I couldn't stand lying down anymore so I want to get up and my right knee felt like right under the Knee cap felt like it was being sawed off with the hand's off. I scream so loud the people came up to see if something happened to me and then I tried rubbing the kneecap then underneath of it as best as I could and then I need to take another step and I howled again. It happened like six times and I had to walk in to the kitchen like a 'peg' like so it went away but I figured I have to do something, I knew I don't know what the hack happened near but thank god it went away but I just thought since I need to report it, who knows what people's mystery. "When paraphrased the above concern, consumer stated, "What happen was that I went to get up, well I got up to stand on my legs so I could walk and I went to take the steps and you know how you bend your knee to take a step, when I went to bend my right knee that's I am not exaggerating it felt like someone was sawing it off with hands off, the pain was so horrible and I felt like grinding cartilage I mean it hurt. I have  never felt pain like that in my life and so I started rubbing it, off course I sat that down and then I rubbed it for a while to get up and walk  and then it happened again and I screamed it did happen five or six time and while that was going on I thought well  I live on the top floor of the apartment, I am in trouble so what I did is I walk like I stiff like get on my right leg to walk to the kitchen, I figured out I am not going to stop, I am just going to walk and see if it levels me out and then I went back and then  I laid down for like 10 more minutes." I am glad you were there to call. I was not going to say anything and then I thought well maybe this is something that is useful down the road, I am thanking god that it went away. I am thankful I mean everybody wants the Pfizer vaccine, nobody wants (incomplete sentence) I mean Moderna is good and this is my opinion and this is what people are saying (Further clarification was unknown) and I was very scared to get the vaccine because I do not trust a lot of medical stuff (Clarification unknown) but then hearing about the variants coming, I thought it is not a good way to die, so I said I am going to go get it and I did. I am glad it was Pfizer. That is all, just want to be helpful to you all like you are to everyone. I am glad that you made the vaccine. I am happy. The adverse event was started the same day after she got home not too long, that was so weird. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. Outcome of event was resolved in 2021.