Key Takeaways
- A knee replacement scar is normal and should be expected, regardless of whether a traditional or minimally invasive approach is used.
- The size, appearance, and healing time of scar tissue after knee replacement can vary based on surgical technique, adherence to postoperative care, and individual biological factors.
- Practicing proper wound care, attending physical therapy, and consulting your medical provider about scar management strategies can improve comfort and appearance over the long term.
- Scars from knee replacement surgery usually do not completely disappear; however, most fade significantly and do not impact joint function.
Why Knee Replacement Scars Are Common
Surgeons must create an incision during knee replacement surgeries to access the deteriorated joint and replace it with a state-of-the-art prosthesis. This means scars from knee replacement procedures are unavoidable, whether the patient undergoes traditional or minimally invasive surgery.
Although modern surgical techniques use robotic technology to create smaller, more precise incisions than traditional methods, both involve cutting through skin and underlying tissue, so scar tissue after knee replacement is likely to occur either way. Nevertheless, a robotic knee replacement scar is usually smaller than a traditional one.
Regardless of the planned surgical approach, patients should be told early on in the consultation process that scarring is a natural part of healing. While cosmetic concerns are understandable, it is important to remember that surgeons’ main priorities are restoring mobility, prolonging implant stability, and ensuring pain is more manageable after surgery.
Fortunately, with time and the care tips outlined in this guide, most total and partial knee replacement scars fade considerably.
What Affects Scar Appearance After Knee Surgery
Joint surgeries are tailored to the uniqueness of each patient’s body, meaning everyone’s knee replacement scar looks a little different.
The factors mentioned below influence how a scar forms, heals, and appears over time.
Type of Incision and Surgical Technique
The surgical approach plays a major role in scar size and location. For instance, traditional knee replacements typically require longer incisions to achieve full joint visibility, whereas minimally invasive knee replacements are designed to create smaller incisions, resulting in smaller scars and shorter recovery times.
The Joint Replacement Center of Scottsdale is one of the leading clinics for minimally invasive surgeries, thanks to our long-standing use of Mako SmartRobotics™ and the CORI surgical system, which enable more accurate prosthesis placement and therefore less tissue disruption.
This incision may be even smaller if patients are undergoing a partial knee replacement rather than a total knee replacement. Since the entire joint does not need to be worked on, a partial knee replacement scar may be shorter and less noticeable than what is seen after a total replacement.
Individual Healing Response
Each person’s body heals differently. Some examples of factors that can influence scar formation are:
- Genetics
- Age
- Skin type
- Overall physical health
Due to the previously mentioned influences, some individuals naturally form thinner, flatter scars, while others may develop thicker or more prominent scar tissue after knee replacement.
Swelling, Bruising, and Inflammation
Because of the procedure’s inherent invasiveness, the surgical site often shows bruising and swelling after knee surgery. This is a normal inflammatory response, but it can temporarily make the scar appear redder and more raised, making it look pronounced. Thankfully, this inflammation typically improves as healing progresses, enabling the scar to blend in more.
Postoperative Care Practices
How the incision is cared for after surgery matters. Three of the most effective ways you can minimize postoperative complications, including scarring, are:
- Proper dressing changes
- Keep the wound clean and dry
- Avoid applying tension to the incision
In addition to the three tips above, it is essential to follow your surgeon’s instructions as closely as possible, as they will be able to provide tailored advice based on your specific risk factors.
Healing Timeline: What to Expect
It is vital to understand the typical healing timeline for knee replacement scars. Read through the stages in the table below so you can help set realistic expectations and reduce your anxiety about the appearance of scar tissue after knee replacement surgery.
| Healing Stage | When It Takes Place | What to Expect |
| Early Recovery | The first few weeks after the knee replacement | The knee replacement scar is usually red or pink, slightly raised, and surrounded by swelling. You may feel mild tenderness, itching, or tightness, which reflects active healing as the body closes the incision and repairs tissue. |
| Mid-Recovery | 6 weeks to several months after the procedure | The scar may temporarily thicken and feel firmer. This is due to collagen remodeling and typically does not mean the scar is worsening. During this phase, patients may be able to ease scar tissue tightness with physical therapy. |
| Long-Term Healing | 6 to 12 months after surgery and beyond | While scars do not disappear completely, they often become much less noticeable, gradually fading, flattening, and softening over time. In some cases, it may take up to a year or longer for a knee replacement scar to reach its final stage. |
At The Joint Replacement Center of Scottsdale, we combine compassionate care with state-of-the-art technology to provide you with the best possible outcome for total and partial knee replacements.Advanced Methods for the Best Results
How to Minimize Scar Appearance
While scarring is unavoidable, you can minimize its appearance by cultivating healthier healing habits. Some examples of ways you can improve scar’s appearance are:
- Proper wound care – Following your surgeon’s instructions, especially during the first few weeks of recovery, is critical. This includes keeping the incision clean, dry, and protected while avoiding premature soaking or friction.
- Silicone treatments – Silicone sheets and gels are often recommended once the incision has fully closed to help regulate moisture and pressure, which can help reduce scar thickness and discoloration.
- Sun protection – UV exposure can darken scars, making them more noticeable. If you protect the healed knee replacement scar with clothing or sunscreen, it can significantly improve its long-term appearance.
- Gentle scar massage – When approved by your care team, a gentle massage can help soften scar tissue and reduce tightness, improving flexibility in that area.
Moreover, if you haven’t gotten your surgery yet, you can be proactive and implement a healthy, balanced diet and pre-knee-replacement exercises to help you heal faster.
When Scars May Require Medical Attention
Since they are a normal part of surgery, most knee replacement scars heal without issue, but certain signs should prompt a call to your surgeon. If you notice any of the issues below, contact a trusted professional, such as Dr. Shane Martin.
Signs of Infection
Some signs that may indicate your incision is infected are:
- Redness spreading beyond the incision
- Inordinate warmth
- Drainage
- Increasing pain
- Fever
If you notice any of these signs, you should schedule an immediate medical evaluation to rule out the potential for infection.
Excessive Thickening or Keloids
In some patients, scars may become excessively thick or raised, exceeding the description mentioned for the mid-recovery stage earlier in this guide and developing into hypertrophic or keloid scars. If this causes discomfort that limits movement, additional treatments may be recommended.
Persistent Pain or Unusual Changes
Three of the most important scar-related things to openly discuss with your medical team are:
- Ongoing pain
- Numbness that worsens
- Changes in color or texture around the scar
By reporting concerns as soon as possible, you can get the care you need, whether it is medication, a new physical therapy plan, or something else entirely.
How Physical Therapy Supports Scar Recovery
Physical therapy enhances long-term joint health and scar healing. Some of the ways a physical therapist can help you support scar recovery are:
- Preventing tightness and adhesions – Therapeutic, post-knee-replacement exercises and guided movement can help prevent scar tissue from binding to underlying structures, which can otherwise limit flexibility.
- Improving mobility and function – By restoring range of motion and strength, physical therapy helps the patient avoid compensatory movement patterns that could unnecessarily strain the incision area.
- Integrating scar management – Physical therapists can teach you how to massage your scar, stretch safely, and maintain proper posture to ensure scar tissue after knee replacement doesn’t hinder long-term outcomes.
Long-Term Expectations for Knee Replacement Scars
Even when equipped with the tips from this guide and one-on-one assistance from a medical provider, it is important to maintain realistic expectations. Scar tissue will fade over time, but patients should be prepared for both traditional and robotic knee replacement scars to remain visible upon close inspection.
What matters most is not the scar itself; the focus should be on improving mobility, reducing pain, and restoring your quality of life through knee replacement surgery. As a result, most patients are bound to experience functional benefits that far outweigh their cosmetic concerns.
Embracing Scar Care and Confidence Post-Surgery
Knee replacement scars are a normal part of recovery. With proper care, time, and rehabilitation, most patients find that their scars from knee replacement become a minor detail rather than a major concern. Still, your cosmetic concerns are valid.
Implementing proactive scar care can improve both comfort and appearance, whether you’re preparing for surgery or already healing. If you’re considering knee replacement or simply have questions about surgical techniques, scarring, or recovery as a whole, the team at the Joint Replacement Center of Scottsdale is available to help.
Our state-of-the-art facility is equipped with cutting-edge technology to ensure each joint surgery is as minimally invasive as possible. Although scars are still common, the robotic knee replacement scars left behind have left patients satisfied post-op.
Contact us to schedule a consultation to improve mobility and long-term joint health.