What Does an Anterior Hip Replacement Scar Look Like?

An anterior hip replacement scar sits on the front of the hip, near the groin crease, rather than on the side or buttock. It typically runs about 8 to 12 centimeters long and, depending on the incision style your surgeon uses, may follow the natural skin fold at the front of your hip or angle slightly downward along the thigh. Because the scar falls in a spot that clothing and swimwear usually cover, cosmetic satisfaction tends to be high, but how the scar actually looks months later depends on the incision type, your body’s healing tendencies, and a few surgical details worth understanding before you go in.

Where Exactly the Scar Sits

The direct anterior approach (DAA) reaches the hip joint through a gap between muscles at the front of the thigh, so the incision starts near a bony landmark called the anterior superior iliac spine, the point of bone you can feel at the front of your pelvis. Surgeons typically place the cut about three finger-widths below that point, with roughly one-third of the incision falling toward the inner thigh and two-thirds toward the outer thigh.¹ That puts the scar in front of and slightly below the hip bone, an area that naturally sits under the waistband of most pants, shorts, or underwear. Compared with a posterior approach, whose scar curves around the buttock, or a lateral approach, whose scar runs along the outer hip, the anterior scar is the least visible when you are standing in ordinary clothes or a swimsuit.

Two Incision Styles and How They Differ

Not all anterior hip scars look the same. Surgeons performing DAA hip replacements choose between two main incision orientations, and the choice changes the scar’s final appearance quite a bit.

Longitudinal incision: The traditional version runs roughly straight down from the hip bone along the front of the thigh. The resulting scar is a vertical or slightly diagonal line. Because it crosses the natural skin creases rather than following them, it can be a bit more noticeable once healed.
Bikini incision: This newer variation runs parallel to the groin crease, tucked into the skin fold where the thigh meets the torso. The name comes from the fact that a bikini bottom or underwear elastic naturally sits right on top of it. Because the cut follows a natural skin fold, the healed scar tends to be thinner, shorter, and less conspicuous.

A systematic review pooling data from eight studies found that three out of four studies comparing the two styles reported better scar cosmesis and higher patient satisfaction with the bikini incision, while the fourth found high satisfaction in both groups with over 90 percent of patients rating their scar appearance as satisfactory.² In one randomized trial of 100 patients, those who received a bikini incision scored significantly better on a scar-cosmesis rating scale at six months and were more likely to report moderate to high satisfaction with the scar’s look.³ A longer-term study following nearly a thousand patients for up to four years confirmed the pattern: bikini-incision patients had lower scar scores on a standardized scale and were more often categorized as “very satisfied.”²

If scar appearance matters a lot to you, it is worth asking your surgeon which incision orientation they use. Not every surgeon who performs the anterior approach uses the bikini variation; many still default to the longitudinal cut because it is what they trained on and it provides a familiar visual field during surgery.

How It Compares to a Posterior Approach Scar

People considering hip replacement often want to know whether the anterior scar looks better than the more common posterior scar, which curves around the outside and back of the hip. One study directly comparing scar perception between the two approaches found that patients who had the anterior surgery rated their skin as looking closer to normal and feeling closer to normal thickness than posterior patients did.⁴ Observers did note that anterior scars showed more surface irregularities, such as faint hatch marks or slight unevenness along the incision line. Despite that, when graded for overall appearance, about 93 percent of anterior scars and 91 percent of posterior scars were rated “good,” a difference that was not statistically meaningful.⁴

The practical takeaway: the anterior scar’s advantage is mainly about location, not about the scar tissue itself being inherently prettier. A scar on the front of the hip near the groin is simply harder for other people to see, whether you are at the beach or in a locker room. In terms of tissue quality, both approaches tend to heal well.

Numbness and Nerve Sensation Around the Scar

One thing that surprises many patients is that the skin around an anterior hip scar can feel numb, tingly, or oddly sensitive afterward. This happens because a sensory nerve called the lateral femoral cutaneous nerve (LFCN) runs through the area where the incision is made. The nerve does not control any muscles; it only provides sensation to a patch of skin on the outer thigh. When it gets stretched or nicked during surgery, you may notice a band of numbness, tingling, or a mild jolt-like feeling along the front and side of your upper thigh.

Studies suggest this is fairly common. One prospective study found that about a third of patients undergoing DAA hip replacement had symptoms of LFCN injury, with reduced sensation being the most frequent complaint, followed by tingling.⁵ The bikini incision, despite looking better cosmetically, may carry a higher risk of this nerve irritation. A prospective study using ultrasound and nerve-conduction testing found that about 36 percent of bikini-incision patients had LFCN symptoms compared to about 22 percent of longitudinal-incision patients.⁶ The longer-term review mentioned earlier also noted that bikini-incision patients had lower rates of peri-incisional numbness at follow-up (about 7.5 percent versus 14.5 percent in the longitudinal group), which seemingly contradicts the ultrasound study.² The discrepancy likely reflects differences in how “nerve injury” was defined and measured: an electrophysiological test will pick up subtle nerve changes a patient never notices, while a patient-reported numbness survey captures only what bothers someone in daily life.

For most people, the numbness or tingling is mild and either improves over months or becomes something they stop noticing. It rarely affects function; it just means a small patch of skin near your scar does not feel quite normal.

Body Weight and Wound Healing Risk

Your body mass index, and particularly how much fat tissue sits over the hip joint, plays a real role in how your scar heals. The anterior approach cuts through the front of the hip, where a skin fold naturally traps moisture and creates friction, especially in people carrying extra weight. One study found that obesity was a significantly stronger risk factor for wound complications in anterior approach patients than in posterior approach patients, with the hazard more than four times higher for obese DAA patients.⁷ A separate analysis looking at fat distribution specifically found that fat depths of three centimeters or more over the hip were associated with greater risk for wound-healing complications and surgical-site infection.⁸

Interestingly, the bikini incision may actually perform better for heavier patients. One study comparing bikini to conventional anterior incisions found that delayed wound healing occurred in none of the obese patients who received a bikini incision, compared to about 17 percent of obese patients who had the conventional longitudinal cut.⁹ The theory is that aligning the incision with the groin crease reduces tension on the wound edges during movement, which matters more when there is a larger skin fold creating shear forces.

Staples, Sutures, and What Closes the Wound

When you look at your scar in the first couple of weeks, you will see either metal staples or a sutured line, depending on your surgeon’s preference. People sometimes worry that the closure method will permanently change the scar’s look. The evidence, honestly, is not definitive either way. A meta-analysis comparing staples to sutures for hip arthroplasty skin closure found no significant difference in wound-evaluation scores between the two.¹⁰ A separate randomized trial comparing skin adhesive (surgical glue) to staples similarly found no significant difference in cosmetic appearance at three months or in patient satisfaction.¹¹ A recent expert panel concluded there simply is not enough evidence yet to declare one closure method cosmetically superior for hip replacement.¹²

In other words, do not stress about whether you end up with staples or stitches. How your body heals, the incision orientation, and your post-operative care habits will affect the final scar far more than the closure hardware.

What the Scar Looks Like Over Time

Right after surgery, the incision is a fresh wound held together by staples, sutures, or adhesive strips. It will be red, slightly swollen, and possibly bruised. Over the first two weeks, the redness and swelling settle down as your surgeon removes staples (usually around day 10 to 14) and the skin edges knit together. By six weeks, the scar is typically a firm, slightly raised pink line. Over the next several months, it continues to flatten, soften, and fade toward a paler tone that blends more with the surrounding skin. Most scars reach their final appearance somewhere between six and twelve months.

The scar’s texture is worth mentioning. Anterior hip scars have been noted to show more surface irregularities on close inspection than posterior scars, likely because the front-of-hip skin moves and folds more during daily activity, creating slight unevenness as the collagen remodels. These irregularities are subtle, usually only visible when a trained observer examines the scar up close, and they do not seem to bother patients in practice.

Reducing Scar Appearance After Surgery

If you want to give your scar the best possible cosmetic outcome, a few strategies have evidence behind them. One randomized trial tested a topical gel made from plant extracts and silicone on joint-replacement scars and found that patients who used it had significantly better scores for vascularity, pigmentation, pliability, and scar height at three months compared to those who received standard post-operative care.¹³ Silicone-based scar sheets and gels are widely used after many types of surgery, and while this specific trial used a combined product, the general principle that keeping a healing scar hydrated and covered helps it flatten and fade holds across wound-healing research.

At the surgical level, one intriguing finding involves wound-edge protectors. A study testing a soft ring-shaped wound retractor during hip arthroplasty found that patients whose incisions were protected by the device had significantly fewer hypertrophic (raised, thickened) scars at three months compared to patients whose incisions were exposed to standard metal retractors.¹⁴ The likely reason is that traditional retractors can bruise and crush the wound edges during surgery, triggering more aggressive scar formation. This is not something you can control as a patient, but if your surgeon uses wound-edge protection devices, it may give you a head start on a less prominent scar.

Negative Pressure Dressings and Wound Complications

Some surgeons apply a special vacuum dressing over the incision for the first few days after anterior hip replacement. These negative-pressure wound therapy devices gently suction fluid away from the wound and hold the edges together. In theory, this should reduce drainage, swelling, and infection risk. In practice, the evidence is mixed. One randomized trial of high-risk anterior hip patients found that the vacuum dressing group had lower rates of superficial surgical-site infection (about 3 percent versus 15 percent), a difference that was statistically significant.¹⁵ But a different study found no significant difference in infection rates between the vacuum dressing and standard dressing groups, in either standard-risk or high-risk patients.¹⁶ A pilot trial even found that patients receiving negative-pressure dressings experienced more wound complications overall than those with ordinary bandages.¹⁷

The takeaway for scar appearance specifically is that these dressings are designed to prevent infection and wound breakdown, not to improve cosmesis. If your wound heals without complications, your scar will look about the same regardless of dressing type. The dressings may be most useful for patients at higher risk of wound problems, such as those with obesity or diabetes, but they are not a cosmetic upgrade.

How Much Patients Actually Care About the Scar

Here is something that consistently shows up in the research and may be reassuring if you are anxious about your scar: most hip replacement patients do not rank scar appearance very high on their list of priorities. In one study that directly asked patients to rank what mattered to them, 30 out of 31 rated pain relief and implant longevity as higher priorities than how the scar looked. Every single patient in that study rated their scar as acceptable.¹⁸ That pattern repeats across the literature: satisfaction with anterior hip scars is consistently above 90 percent once the wound has fully healed, and most patients are far more focused on how well the new hip works than on the mark it left behind.

The emerging frontier for patients who do prioritize cosmesis is endoscopy-assisted anterior hip replacement, which uses a much smaller incision aided by a camera. One comparative study found that patients who had the endoscopic version reported better subjective satisfaction with scar appearance and faster functional recovery than those who had a standard bikini-incision anterior approach.¹⁹ The technique is still relatively new and not yet widely available, but it suggests the trend in anterior hip surgery is toward ever-smaller, ever-less-visible scars.