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What causes a big soft ball of lump on the right knee?

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Posted on Tue, 10 May 2016
Question: I am 67 and I have double knee replacements. Four hours ago, I feel crossing a city street -- on my face, bruising my forehead, nose, hands, but I arrived home with a big soft ball of lump on my right knee. It does NOT hurt and there's no sign of bruising or blood but this huge and soft bulge is on my right knee and seems to have gotten bigger after icing. Any ideas? Just rest?


How soon before I get an answer? Am I to wait just a few minutes or a few hours or a whole day? I did not get an estimate from anyone. Thank you.
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Answered by Dr. Naveen Kumar Sharma (1 hour later)
Brief Answer:
There can be collection of blood around knee joint

Detailed Answer:
Hello, Welcome to HCM.
I have studied your case and can understand your concern.

I think there can be collection of blood around knee joint.It is called hematoma. It is common in people who are taking blood thinners or previous surgery.
I would suggest you to follow these steps.
1. ice application should be continued.
2.Rest , Avoid prolong standing or sitting .
3.Compression bandage can be applied.
4.Take prophylactic antibiotic like cefuroxime for three to five days.

These steps will help in resolution of blood hematoma and fast recovery. In case there is pain or increase in size of swelling you need to visit your doctor and get x ray.
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I hope this answer will be useful for you. let me know if there is any other followup questions. Thanks
Above answer was peer-reviewed by : Dr. Deepak
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Answered by
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Dr. Naveen Kumar Sharma

Orthopaedic Surgeon, Joint Replacement

Practicing since :2002

Answered : 4486 Questions

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What causes a big soft ball of lump on the right knee?

Brief Answer: There can be collection of blood around knee joint Detailed Answer: Hello, Welcome to HCM. I have studied your case and can understand your concern. I think there can be collection of blood around knee joint.It is called hematoma. It is common in people who are taking blood thinners or previous surgery. I would suggest you to follow these steps. 1. ice application should be continued. 2.Rest , Avoid prolong standing or sitting . 3.Compression bandage can be applied. 4.Take prophylactic antibiotic like cefuroxime for three to five days. These steps will help in resolution of blood hematoma and fast recovery. In case there is pain or increase in size of swelling you need to visit your doctor and get x ray. \ I hope this answer will be useful for you. let me know if there is any other followup questions. Thanks