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After a Total Knee Replacement: What Patients Ask in the First Two Weeks

Published June 30, 2026 · PrepQ LLC · physician-written patient education

The first two weeks after a total knee replacement generate more patient questions than almost any other orthopedic procedure, and they arrive in a predictable sequence. In the first few days it is swelling and pain control. By the end of the first week it is the incision — is the drainage normal, when can it get wet. In the second week it is function — when can I drive, when can I stop the blood thinner, when do the staples come out. A busy joint-replacement practice can field dozens of these calls a day.

Swelling is the number-one worry, and reassurance plus a clear escalation rule is what patients need. Moderate swelling and bruising around the knee, sometimes tracking down to the ankle, is expected for weeks after surgery, and elevation and ice help. What patients should watch for — and what a good patient-education answer names explicitly — is calf pain and swelling that is one-sided and worsening, which can signal a blood clot, or a fever with increasing redness and drainage, which can signal infection. Those symptoms mean call the office now.

Wound-care questions are constant and easy to answer well. Most modern knee incisions can get gently wet in the shower after a day or two, but should not be soaked in a bath or pool until cleared. Some clear or lightly blood-tinged drainage early on is common; drainage that increases, turns cloudy, or comes with spreading redness is not, and should prompt a call.

The two questions with the most safety weight are driving and anticoagulation. Patients often ask when they can drive; the honest answer is that it depends on which knee, whether they are off narcotic pain medication, and their surgeon’s clearance — commonly a few weeks, but individualized. And every patient on a post-operative blood thinner wants to know when to stop it; that is a decision for the surgeon, never something PrepQ tells a patient to change on their own.

In PrepQ, each of these answers is physician-written and approved by the orthopedic practice, which can tailor the wound-care timeline, the anticoagulation window, and the return-to-driving guidance to its own protocol. Urgent-sounding messages — calf pain, fever, chest pain, shortness of breath — are escalated to the office or 911 rather than answered. Patients get accurate reassurance at the moment they are worried, usually in the evening, and the practice’s phones get quieter.

Common questions, answered

A sample of PrepQ’s physician-reviewed orthopedics answers. Subscribing practices review and approve every answer, and can customize it to their protocols, before any patient sees it.

How much swelling is normal after a knee replacement?
Moderate swelling and bruising around the knee, sometimes down to the ankle, is expected for several weeks; elevation and ice help. Call your office for one-sided, worsening calf pain and swelling, or fever with increasing redness or drainage.
When can my knee incision get wet?
Many incisions can get gently wet in the shower after a day or two, but avoid baths, pools, and hot tubs until your surgeon clears it. Follow your practice’s specific wound-care instructions.
When can I drive after a total knee replacement?
It depends on which knee was operated on, whether you are off narcotic pain medicine, and your surgeon’s clearance — often a few weeks, but it is individualized. Confirm with your surgeon before driving.
When do I stop my blood thinner after surgery?
The length of time on a post-operative blood thinner is set by your surgeon based on your risk. Do not stop it on your own — confirm the exact stop date with your surgical team.

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