If you're among the 700,000 Americans undergoing knee replacement, a leading orthopedic surgeon says protecting your new joint starts before surgery.
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The top 5 mistakes after knee replacement surgery
Mistake 1: Unrealistic expectations for healing
Recovery after knee replacement takes time, and rushing the process can set you back.
“Recovery timelines vary significantly among patients and depend on several individual factors,” says Dr. Varacallo. Patients with severe arthritis (“bone on bone”), deformities (“bowed” or “knock-kneed”), or joint stiffness often experience longer recovery periods. Delaying surgery for too long can also make recovery harder. “Make sure to ask and discuss this with your surgeon regarding the current state of your knee so that you may have realistic expectations for your recovery timeline and outlook.”
Dr. Varacallo shares what recovery often looks like these days:
- Walking with physical therapy the same day as surgery
- Daily exercises in the hospital or at home
- Using a cane or walker for two to four weeks, then gradually transitioning to normal walking
- Driving again within two to four weeks (start by practicing in a parking lot)
- Returning to sedentary work within weeks, or three to four months for more physically demanding jobs
- Steady improvement over the first six months, with progress continuing up to one to two years
To help patients get the best results, many orthopedic surgeons, including Dr. Varacallo, now use robotic-assisted surgery. “I regularly utilize robotic-assisted surgery, which provides more precise and accurate joint preparation, improving the overall alignment and stability of the knee implant,” he says. This technology, combined with good strength and flexibility going into surgery, can support a faster recovery and smoother movement after the operation.
“While it is natural to want to return quickly to your regular routine, carefully following the instructions from your surgeon, healthcare providers, and physical therapist is essential,” Dr. Varacallo says. “Do not hesitate to ask for assistance with daily tasks. Having support from a family member, friend, or neighbor can be particularly important during the first two weeks after surgery.”
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Mistake 2: Skipping exercises
Exercise is one of the most important parts of recovery, yet it’s also one of the most commonly overlooked. Shortly after surgery, you’ll begin gentle movements to keep your joint flexible and prevent blood clots. Dr. Varacallo recommends exercises such as:
- Ankle pumps
- Quad sets
- Heel slides
- Straight leg raises
As you progress, additional exercises help restore range of motion and strength:
- Knee extension stretches
- Seated and standing knee bends
- Short arc quads
- Small step-ups
By one to two months, focus shifts to rebuilding strength and endurance with:
- Mini squats
- Stationary bike
- Resistance bands
- Calf raises
- Leg press
“Remember, your body and joints work together,” Dr. Varacallo says. Exercises after knee replacement often target the hip, core, and lower back muscles to enhance your overall function as you continue recovering.” His advice: take it step by step. “Avoid rushing into advanced movements before comfortably mastering foundational exercises early in your recovery.”
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Mistake 3: Ignoring pain or swelling
“Experiencing some degree of pain and swelling after surgery is normal and expected,” says Dr. Varacallo. But brushing these symptoms off, or not managing them properly, can slow your healing.
Here’s a general timeline of what many patients can expect:
Weeks one to two: Pain is most noticeable and may require medication.
Weeks three to six: Pain transitions from surgical discomfort to soreness from rehab exercises.
Beyond six weeks: Pain should be mild and mostly linked to activity.
“During the first two weeks after your surgery you should be using ice packets, ice machines, or cold compression devices roughly every two to three hours, for 15 to 20 minutes at a time,” Dr. Varacallo says. “It is important to ice immediately after physical therapy or exercise to reduce inflammation.”
As healing continues, icing should remain part of your routine. Between weeks three to six, Dr. Varacallo recommends icing three to four times per day, especially after activity. Each session should last 15 to 20 minutes, but can extend up to 30 minutes if swelling persists. A helpful tip is to ice before bed to reduce overnight swelling.
Beyond six weeks, icing once or twice daily after activity may still be helpful. Always monitor your pain levels and reach out to your care team if you notice issues such as:
- Pain not relieved by medication
- Sudden worsening pain
- Sharp, burning, or prolonged pain with redness or warmth
- Pain with numbness or tingling in the leg
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Mistake 4: Neglecting wound care and medication
Caring for your surgical site and following your medication plan are essential steps to prevent complications and support healing.
When it comes to wound care, always follow your surgeon’s instructions. “The frequency of dressing changes depends on your surgeon’s preferences and the type of skin closure used (staples or surgical glue),” Dr. Varacallo says. “If the surgical site is bleeding and saturating the bandage, it can be changed, but a general guideline is if the site is covered and dry for the first week, then any bandages can be removed thereafter.”
Medication management typically includes:
- Pain control: Opioids like oxycodone or tramadol may be prescribed for the first week or two, but they should be tapered quickly to avoid dependence. Because constipation is a common side effect, these medications are usually paired with a stool softener.
- Over-the-counter options: As pain improves, most patients switch to medications like Tylenol.
- Blood thinners: Drugs such as aspirin, Eliquis, or Xarelto are often prescribed for two to six weeks to reduce the risk of blood clots.
- Antibiotics: These are given through an IV before and after surgery, and in some cases your surgeon may prescribe oral antibiotics for several days post-surgery.
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Mistake 5: Not following your doctor’s advice
One of the most important parts of recovery is sticking to your care plan after surgery. Skipping follow-ups or ignoring your provider’s instructions can put your healing at risk.
The schedule for post-op visits may vary by surgeon, but generally includes check-ins at:
- Two weeks after surgery
- Six weeks
- Three months
- Six to 12 months
These visits allow your surgical team to monitor your progress, address concerns, and adjust your recovery plan as needed. Appointments may be with your surgeon or with trained members of the care team, such as nurse practitioners or physician assistants.
“I always tell my patients that a successful surgery truly is a partnership between the providers and patients,” says Dr. Varacallo. “Staying motivated, proactive, maintaining a positive outlook, and closely following your healthcare team’s instructions will significantly improve your chances of achieving an excellent outcome.”
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