Patients ask me about the hip replacement scar more often than they ask about the implant. That makes sense: the implant is invisible, and the scar is the part you see in the mirror. After more than twenty years and over 700 joint replacements a year, here is what I tell patients to expect.
What does a hip replacement scar look like?
A hip replacement scar is a single straight line, usually 3 to 10 inches long, placed on the front, side, or back of the hip depending on the approach used. In the first weeks it looks pink or red, sits slightly raised, and feels firm. Over the next one to two years it flattens, softens, and fades toward your own skin tone.
Most patients are surprised by how little there is to see at one year: a thin, pale line that clothing covers. Color varies with skin tone, running slightly paler on lighter skin and slightly darker on deeper skin tones, especially after early sun exposure.
How long is a hip replacement scar?
Length depends almost entirely on the approach. Here is the honest range for each:
- Anterior approach (front of the hip): about 3 to 5 inches, running down the front of the upper thigh or angled along the groin crease.
- Posterior approach (back of the hip): about 6 to 10 inches, curving over the side and back of the buttock and upper thigh.
- Lateral approach (side of the hip): about 5 to 8 inches along the outside of the hip.
- Revision or complex surgery: longer, sometimes 10 inches or more, because removing existing components takes wider exposure.
I use the anterior approach for most of my hip patients. The incision sits in front, away from the pressure of sitting and lying on your side.
One caution: a shorter hip replacement incision is not automatically a better operation. Pulling hard on skin through a too-small opening bruises the wound edges. I size the incision to the patient, not to a marketing number.
What is a bikini incision for hip replacement?
A bikini incision is a horizontal version of the anterior approach that follows the natural groin crease instead of running down the thigh, so underwear or a swimsuit covers it.
The trade-off is real. That crease is a moist, high-motion area, and a skin fold sitting over it can rub and slow healing. I talk through the cosmetic benefit and the wound risk with each patient rather than treating it as an upgrade.
How does a hip replacement incision heal week by week?
Healing runs in three stages, and the incision looks worse before it looks better. That middle phase catches people off guard, so here is the timeline I give before surgery:
- Weeks 1 and 2: the wound is sealing. Expect pink or red skin, mild swelling, bruising that tracks down the thigh, and tenderness. Modern waterproof dressings often stay on for 7 to 10 days.
- Weeks 3 to 8: the scar thickens and can look angrier than it did at discharge as collagen production peaks. Itching, tightness, and a firm ridge are normal here.
- Month 3 to month 24: remodeling. The ridge softens, the redness drains away, and the line flattens toward your natural skin tone. Most visible improvement happens between months 3 and 12.
Numbness beside the incision is common, particularly with the anterior approach, because small skin nerves cross that area and cannot always be spared. The patch usually shrinks over several months and does not affect how the hip works.
For the full recovery picture beyond the incision, see my hip replacement recovery timeline.
Does the surgical approach change how the scar looks?
Yes, but less than most patients expect, and the differences cut both ways. Mayo Clinic researchers compared 150 patients (75 anterior approach, 75 posterior approach) using two validated scar rating scales about three years after surgery.
Overall appearance was rated good in 93 percent of anterior and 91 percent of posterior patients, a difference that was not statistically meaningful. Anterior patients rated their own scars closer to normal skin, while trained observers found slightly more small irregularities in that same group.
Two patient factors mattered more than the approach: women rated their scars more critically than men, and a history of keloid scarring predicted a poorer observer rating.
Here is how I read that across the desk. Approach is worth discussing for muscle preservation, hip precautions, and early recovery. It is a weak reason to choose an operation if your only goal is a prettier line.
Does robotic hip replacement leave a smaller scar?
No. Robotic assistance improves implant positioning; it does not shrink the incision. I use the Mako® robotic platform for many hip and knee cases and serve as a paid consultant to Stryker on that system, and patients deserve to hear that plainly.
The robotic arm still works through the same opening a surgeon’s hands and instruments need. Anyone promising a dramatically smaller scar because of a robot is selling the technology, not describing it. The real value shows up in implant alignment, covered on my robotic-assisted joint replacement page.
How do I care for my hip replacement incision?
Keep it clean, keep it dry, keep it out of the sun, and leave it alone. Those four habits do more than any product on a pharmacy shelf.
When can I shower after hip replacement surgery?
Most of my patients shower within a few days, because the surgical dressing is waterproof. Soaking is different: no baths, pools, or hot tubs until the incision is fully sealed, usually three to four weeks, and only once your surgeon clears you.
Pat the area dry, do not scrub it, and skip ointments and oils on an open or scabbed incision unless your surgeon asked for them.
Do silicone sheets and scar massage help?
Silicone gel sheets have the best evidence among over-the-counter options, and gentle scar massage softens a firm ridge. Both are for later, not for now.
Wait until the incision is fully closed with no scabs and your surgeon has cleared it, usually around six weeks. Starting too early pulls the wound edges apart.
How do I protect the scar from the sun?
Cover it, or use a broad-spectrum SPF 30 or higher for a full year once the incision has closed. New scar tissue pigments easily, and early sun exposure can leave a permanently darker line.
This one matters in Middle Tennessee. Patients who head to the lake in June with a two-month-old incision are the ones asking in the fall why the line looks so dark.
What makes a hip replacement scar heal poorly?
Some of it you control and some of it you inherit. Being honest about both sets the right expectations before surgery.
Factors you can influence:
- Smoking and nicotine: nicotine constricts the small vessels feeding the wound edges. It is the biggest modifiable risk to wound healing, and I ask patients to stop well before surgery.
- Blood sugar control: uncontrolled diabetes slows healing and raises infection risk.
- Sun exposure and friction: early UV light and clothing that rubs the incision worsen the final appearance.
- Doing too much too soon: repeated stretching across a fresh wound widens the line.
Factors you cannot change:
- A keloid or hypertrophic scarring history: if past cuts healed thick and raised, say so before surgery. Keloid tendency runs in families and is one of the few reliable predictors of a poorer scar.
- Skin tone and genetics: both influence pigment and collagen behavior.
- Body habitus: a skin fold sitting over an incision creates moisture and shear, which is why placement is a planning decision, not an afterthought.
My guide to preparing for hip replacement surgery covers the weeks that set up a clean recovery.
When should I call my surgeon about my incision?
Call the same day for spreading redness, new warmth, drainage past the first week, foul odor, fever above 101 degrees Fahrenheit, or pain that is increasing instead of easing. Those signs separate normal healing from a wound problem.
Light drainage in the first several days is expected. Drainage that keeps going, soaks a dressing, or changes color is not, and it is the finding I most want to hear about early.
Nobody on my team minds a call about an incision that turns out to be fine. What we mind is hearing about it three weeks late. A superficial wound issue treated early is straightforward; a delayed one can become a deep joint replacement infection, which is a much bigger problem.
Talk through your hip replacement scar before surgery, not after
If the appearance of the incision matters to you, say so at your consultation. Placement, approach, and closure are decisions we make together, and I would rather hear your priorities before the operation than after.
I see patients from Franklin, Nashville, Columbia, Brentwood, and across Middle Tennessee at the Bone and Joint Institute of Tennessee, 3000 Edward Curd Lane, Franklin, TN 37067. No referral is required. Call (615) 791-2630 or schedule a consultation online.
Want Dr. Calendine’s articles to stand out in your Google and AI search results? Add him as a preferred source (one tap).
Medical disclaimer: This article is for educational purposes only and is not a substitute for individual medical advice. Always follow the wound care instructions given by your own orthopedic surgeon. In a medical emergency, call 911.
References
- Wilson JM, Petis SM, Pagnano MW, Sierra RJ, Trousdale RT, Taunton MJ. Scar perception after two surgical approaches for total hip arthroplasty. Arthroplasty Today. 2022;14:96-99. doi.org/10.1016/j.artd.2022.01.028
- Son D, Harijan A. Overview of surgical scar prevention and management. Journal of Korean Medical Science. 2014;29(6):751-757. doi.org/10.3346/jkms.2014.29.6.751
- Jahng KH, Bas MA, Rodriguez JA, Cooper HJ. Risk factors for wound complications after direct anterior approach hip arthroplasty. The Journal of Arthroplasty. 2016;31(11):2583-2587. doi.org/10.1016/j.arth.2016.04.030
- American Academy of Orthopaedic Surgeons. Activities after hip replacement. OrthoInfo. orthoinfo.aaos.org/en/recovery/activities-after-hip-replacement
