Scar care after knee replacement begins with protecting your incision, following your surgeon’s instructions, and watching for changes that deserve medical attention. Products, massage, and other scar treatments come later, only after the incision is completely closed.
This article explains common incision changes, warning signs, skin sensitivity, and when silicone scar tape may be considered.
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What Happens Beneath Your Incision?
Most knee replacement incisions run vertically across the front of your knee. Although you see one line on the surface, several layers of tissue were opened and closed during surgery.
Your body produces collagen as these tissues repair. During the early weeks, the incision may appear pink, raised, firm, or slightly uneven. You may feel a ridge beneath the skin where the deeper tissues were closed. That ridge often becomes less prominent over time.
A firm area should not automatically be dismissed as normal, however. A substantial increase in redness, warmth, swelling, tenderness, drainage, or separation of the incision requires guidance from your surgeon.
Numbness and Sensitivity Near the Scar
A numb area beside the incision is common after knee replacement. Small sensory nerve branches cross the area where the surgical incision is made, and some may be divided during the procedure.
The numb region may shrink over time, but normal sensation does not return completely for everyone. Numbness does not necessarily affect the strength of your knee, although it can change how clothing, bedding, touch, or kneeling feels.
Other people notice sensitivity, tingling, burning, or brief electrical sensations. A physical therapist may use carefully selected desensitization techniques once the incision is ready. New, severe, or worsening sensory symptoms should be discussed with an appropriate healthcare professional.
The appearance of your scar is only one part of incision care. Closure, drainage, skin condition, sensitivity, and function provide more useful information together.
Do not apply massage, lotion, tape, or other products to an open incision unless your surgeon has specifically instructed you to do so.
Follow Your Specific Dressing and Showering Instructions
Dressings and closure methods vary. Your incision may have staples, visible sutures, absorbable sutures beneath the skin, adhesive strips, surgical glue, or a negative-pressure dressing.
These systems have different care instructions. Some surgical dressings are designed to remain in place during a shower. Others must be protected from water or changed according to a specific schedule.
Use the discharge instructions from your surgical team rather than a general timeline from the internet. Do not soak your incision in a bathtub, swimming pool, or hot tub until your surgeon confirms that it is safe.
Do not peel off surgical glue or adhesive strips simply because an edge begins to lift. Ask your surgical team what they want you to do with your particular closure.
Drainage and Other Changes to Report
A small amount of drainage may appear on an early postoperative dressing, but persistent or new drainage deserves attention. Contact your surgeon if drainage continues, returns after the dressing was dry, saturates the dressing, develops an odor, or becomes cloudy, yellow, or green.
Also report an opening between the incision edges, spreading redness, fever, chills, rapidly increasing swelling, or substantially worsening pain. Persistent wound drainage after joint replacement is associated with an increased risk of infection, so it should not be managed with home remedies alone.
A rash may come from an adhesive, skin preparation, dressing, or another source. Its location and appearance can provide useful clues, but a spreading, blistering, painful, or draining rash should be evaluated.
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When Scar Massage May Be Appropriate
Scar massage is not appropriate while your incision is open, draining, scabbed, or showing signs of infection. Wait until your surgeon or physical therapist confirms that the incision is completely closed and ready for direct contact.
Once cleared, a physical therapist may teach you gentle techniques based on how the tissue moves and feels. The amount of pressure, direction, and duration should reflect your skin condition, sensitivity, and surgical history.
Scar massage should not involve aggressively forcing tissue or causing the incision to become irritated. It is also not a substitute for medical evaluation when your scar is painful, opening, draining, or changing unexpectedly.
A Practical Silicone Scar Tape Option
Once your incision is completely closed, silicone scar tape is one of the more evidence-supported products you can consider for managing a surgical scar. Silicone products may help reduce the redness, thickness, firmness, or raised appearance of some scars when used consistently over time.
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If your surgeon has cleared you to begin scar care, RVLAIM silicone scar tape offers a simple way to add silicone to your routine. It comes in a continuous roll, so you can cut one strip to fit the length of your knee replacement scar instead of trying to position several smaller sheets.
The tape is thin, flexible, and designed to remain against your skin during normal daily activities. According to the product listing, it can be washed and reused, making consistent scar care more convenient and economical than repeatedly replacing disposable strips.
If your scar remains raised, firm, red, or more noticeable than you would like, this is a practical product to consider. See the RVLAIM silicone scar tape on Amazon and choose the roll size that fits your incision.
Silicone scar tape does not produce immediate results, and no product can promise to remove a scar completely. Consistent use over time is more realistic than expecting a rapid change. Do not place it over surgical glue, scabs, drainage, irritated skin, or an incision that is not completely closed.
Inspect your skin when removing the tape. Discontinue use if you develop blistering, skin breakdown, a persistent rash, increasing pain, or another concerning reaction.
Protecting Your Scar From Sun Exposure
Sun exposure can cause a newer scar to darken or become more noticeable. Once the incision is completely closed, clothing or a broad-spectrum sunscreen can help protect it.
Ask your surgeon when sunscreen can be applied directly to the area. Never place sunscreen over an open incision or beneath a dressing unless your surgical team has approved it.
Scar Appearance Changes Gradually
A knee replacement scar can remain pink, firm, sensitive, or raised for months. Appearance varies with skin characteristics, surgical technique, tension across the incision, previous scarring, sun exposure, and individual tissue response.
No cream, tape, supplement, or massage technique can promise a nearly invisible scar. The first priorities are a securely closed incision, healthy surrounding skin, and the absence of concerning drainage or infection signs.
If pain around the incision is making your overall symptoms harder to interpret, Making Sense of Pain After Knee Replacement provides a concise framework for observing pain, swelling, activity, and other contributing factors.
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Educational disclaimer: This article provides general educational information and does not replace individualized medical advice, diagnosis, wound assessment, or treatment. Incision care instructions vary according to the closure method and surgical procedure. Follow your surgeon’s instructions and contact the surgical team promptly regarding drainage, separation, fever, spreading redness, worsening pain, or other concerning changes.
References
- O’Brien L, Jones DJ. Silicone gel sheeting for preventing and treating hypertrophic and keloid scars. Cochrane Database Syst Rev. 2013;(9):CD003826. doi:10.1002/14651858.CD003826.pub3
- Wang F, Li X, Wang X, Jiang X. Efficacy of topical silicone gel in scar management: a systematic review and meta-analysis of randomised controlled trials. Int Wound J. 2020;17(3):765-773. doi:10.1111/iwj.13298
- Gold MH, McGuire M, Mustoe TA, et al. Updated international clinical recommendations on scar management: part 2. Algorithms for scar prevention and treatment. Dermatol Surg. 2014;40(8):825-831. doi:10.1111/dsu.0000000000000050
- Shahi A, Boe R, Bullock MW, et al. The risk factors and an evidence-based protocol for the management of persistent wound drainage after total hip and knee arthroplasty. Arthroplast Today. 2019;5(3):329-333. doi:10.1016/j.artd.2019.05.003
- Ailaney N, Johns WL, Golladay GJ, Strong B, Kalore NV. Closed incision negative pressure wound therapy for elective hip and knee arthroplasty: a systematic review and meta-analysis of randomized controlled trials. J Arthroplasty. 2021;36(7):2402-2411. doi:10.1016/j.arth.2020.11.039
- Hopton BP, Tommichan MC, Howell FR. Reducing lateral skin flap numbness after total knee arthroplasty. Knee. 2004;11(4):289-291. doi:10.1016/S0968-0160(03)00120-4