Slew-footed is a colloquial term for out-toeing, a walking pattern in which one or both feet point outward rather than straight ahead. In most children, it is a normal developmental variation that corrects on its own, but in adults it can sometimes signal an underlying structural issue or contribute to joint problems over time. The causes range from the shape of the hip bone to habits formed in the womb, and treatment depends entirely on whether the out-toeing is causing pain or functional trouble.
What “Slew-Footed” Actually Means
When someone is described as slew-footed (sometimes spelled “slue-footed”), their feet rotate outward during walking so the toes point away from the midline of the body. Think of a duck’s waddle and you have the general idea, which is why the term “duck-footed” is used interchangeably. The medical term is out-toeing, and it is the mirror image of in-toeing, or pigeon-toed walking. Everybody’s feet naturally angle outward a few degrees. Out-toeing becomes noteworthy when the angle is noticeably larger than average or when it starts causing discomfort, tripping, or difficulty with physical activity.
The foot itself is rarely the source of the problem. Out-toeing is almost always driven by the alignment of structures higher up the leg, particularly the hip joint, the thighbone, or the shinbone. To understand why someone walks with their feet turned out, you have to look at the entire chain from hip to ankle.
Why It Happens in Children
In young children, out-toeing is overwhelmingly a product of normal development. Babies spend months curled in the womb with their legs in various rotated positions, and those positions influence the alignment of the bones for the first several years of life. Out-toeing in infants and toddlers is generally a physiologic variant that arose from in-utero posturing and gradually corrects on its own during the growing years.1PubMed Central. In-toeing and out-toeing in children This is probably the single most important thing for parents to hear, because the visible out-turning of a toddler’s feet can look alarming even when it is entirely harmless.
The most common structural reason for childhood out-toeing is external tibial torsion, where the shinbone is twisted outward more than usual. This is normal in early development and tends to settle into a typical range as the child grows. Less commonly, the rotation comes from the hip: some children have a version of the thighbone (the femur) that angles their entire leg outward. Flat feet can also contribute, because when the arch collapses inward, it can make the foot appear to splay outward during walking.
A large review covering over 5,000 cases of in-toeing and out-toeing concluded that most of these problems represent normal developmental variants and require no treatment.2PubMed. Thoughts on in-toeing and out-toeing: twenty years’ experience with over 5000 cases and a review of the literature That finding has held up over decades of pediatric orthopedic practice. The vast majority of slew-footed children simply grow out of it.
When the Cause Is in the Hip
One cause that does not always resolve on its own is femoral retroversion, a structural twist of the upper thighbone. In this condition, the neck of the femur angles backward relative to the rest of the bone more than it should. Because the femur connects to the pelvis at the hip socket, its rotational alignment directly controls where the knee and foot end up pointing. A retroverted femur pushes the whole leg into external rotation, producing the classic slew-footed gait.
Femoral retroversion has been linked to late-onset walking in early childhood, a persistent out-toeing gait, functional limitations during sports, and knee pain.3PubMed Central. Association of femoral retroversion and out-toeing gait with development of hip osteoarthritis and treatment: a systematic review It differs from the benign tibial torsion seen in toddlers because it originates higher in the skeleton and can be more persistent. In children, the degree of femoral twist normally changes as they grow: newborns tend to have a lot of forward twist (anteversion), which gradually decreases through childhood. If the twist overshoots and goes too far backward, the result is retroversion and an out-toeing pattern that may stick around into adulthood.
Out-Toeing in Adults
When out-toeing persists into or first appears in adult life, the picture changes. Adults have finished growing, so there is no more spontaneous remodeling of bone to count on. The causes in adults include residual childhood torsion that never corrected, femoral retroversion, external tibial torsion that remained from development, tight external hip rotator muscles, or compensatory changes from other alignment issues at the knee or ankle.
Habitual postures matter too. People who spend years sitting with their knees apart and feet turned out, or who train in disciplines that emphasize external rotation (ballet is the most obvious example), can develop soft-tissue tightness patterns that hold the feet in an outward position. This is not the same as a bony deformity, and it tends to be more responsive to stretching and retraining.
For many adults, mild out-toeing is entirely asymptomatic. They walk with their feet turned out, always have, and it never causes trouble. The concern arises when the alignment starts producing secondary problems. A systematic review found that femoral retroversion and the out-toeing gait pattern it creates may be associated with the development of hip osteoarthritis over time.4PubMed Central. Association of femoral retroversion and out-toeing gait with development of hip osteoarthritis and treatment: a systematic review – Section: Definition and diagnosis of femoral retroversion and coexistent hip pathologies When the hip socket and the femur are not aligned in their intended orientation, the contact pressures inside the joint shift. Over years and decades, those altered pressures can wear down cartilage in places it was not designed to handle heavy loads.
Symptoms and Functional Effects
Slew-footedness by itself is not painful. The foot angle is a gait pattern, not an injury. Symptoms, when they do show up, come from the downstream consequences of altered alignment. These include:
- Knee pain: When the foot points one direction and the hip points another, the knee is caught in the middle absorbing rotational stress it was not built for. Patellofemoral pain (discomfort around or behind the kneecap) is one of the more common complaints.
- Hip pain or stiffness: Particularly when femoral retroversion is involved, the hip joint may not have full range of internal rotation. Activities that demand it, like squatting or pivoting, can produce a pinching sensation.
- Shin and ankle trouble: Altered lower-limb alignment has been connected to changes in how forces travel through the bones and joints during walking and running, which may raise the risk of overuse injuries.5PubMed Central. Feasibility of mitigating out-toeing gait using compression tights with inward-directing taping lines
- Fatigue and inefficiency: Walking or running with your feet turned significantly outward is mechanically less efficient than a straight-ahead gait. Some people notice that their legs tire faster or that they feel clumsy during quick directional changes.
None of these problems is inevitable. Plenty of people with moderate out-toeing remain symptom-free their entire lives. The evidence generally points toward symptoms becoming relevant when the out-toeing is more severe, when the person is highly active (especially in running or cutting sports), or when other alignment issues at the hip or knee compound the problem. Axial-plane malalignment, meaning rotational misalignment of the bones viewed from above, is recognized as an important factor in conditions like patellar instability, where the kneecap does not track properly in its groove.6Clinics in Sports Medicine. Axial Plane Malalignment in Patellofemoral Instability
How It Is Diagnosed
A clinician evaluating out-toeing will usually start with a physical exam that measures how much each segment of the leg contributes to the rotation. Internal and external rotation of the hip is tested with the person lying face down and their knees bent to 90 degrees. By comparing how far the hip rotates in each direction, the examiner can estimate whether the femur has excess anteversion or retroversion. Tibial torsion is assessed by looking at the angle between the ankle and the knee with the leg hanging off the edge of the table. The foot itself is checked for flatfoot deformity or other structural differences.
For children, this clinical exam is usually enough. Imaging is reserved for cases where the out-toeing is severe, asymmetric (only one side), associated with pain, or not improving on the expected timeline. In adults, a CT scan that measures the rotational profile of the femur and tibia can give precise numbers when surgery is being considered. Plain X-rays are less useful for torsional problems because they only show the bones in two dimensions, and the twist happens in the third.
Treatment for Children
For the majority of slew-footed children, the treatment is reassurance and watchful waiting. This is not a dismissive approach. It is backed by decades of clinical evidence showing that developmental out-toeing overwhelmingly resolves as the child’s skeleton matures.2PubMed. Thoughts on in-toeing and out-toeing: twenty years’ experience with over 5000 cases and a review of the literature Special shoes, braces, and inserts have been tried historically, and the consensus in pediatric orthopedics is that they do not speed up correction. The bones remodel according to their own developmental timetable, and external devices have not been shown to change that.
Intervention is considered when out-toeing is severe enough to cause significant tripping, when it persists past age eight or nine without any signs of improvement, or when it is clearly causing pain. In rare cases, a surgical procedure called a derotational osteotomy may be performed, where the bone is cut and rotated to a better alignment, then fixed with plates or screws while it heals. This is major surgery with a long recovery and is reserved for children with substantial functional impairment.
Treatment for Adults
Adults with symptomatic out-toeing have a wider menu of options, partly because the goals are different. The aim is rarely to make someone walk with perfectly straight feet. Instead, treatment focuses on reducing pain, improving function, and preventing further joint damage.
Physical therapy is the first-line approach for most adults. A targeted program will typically work on strengthening the muscles that internally rotate the hip (mainly the gluteus medius and the smaller deep rotators) while stretching the muscles that hold the leg in external rotation. Core and hip stability exercises help the pelvis control rotation during walking and running. Gait retraining, sometimes with feedback from a treadmill camera, teaches the person to consciously bring their foot angle closer to neutral. This takes time and repetition, but many people see meaningful improvement over weeks to months.
Orthotic insoles can sometimes help when flat feet are a contributing factor, by supporting the arch and keeping the foot from collapsing inward into a position that looks and functions as out-toeing. These do not fix a bony torsion, but they can reduce symptoms at the foot and ankle level.
Research has also explored wearable options. One study tested compression tights with built-in inward-directing taping lines and found that they reduced foot rotation angles by up to about 20% compared with regular shorts or compression tights without the taping pattern.5PubMed Central. Feasibility of mitigating out-toeing gait using compression tights with inward-directing taping lines This is a feasibility-stage finding, not a proven clinical treatment, but it suggests that external cues applied to the leg may help guide foot position without requiring conscious effort during every step.
Surgery in adults follows the same principle as in children: a derotational osteotomy of the femur or tibia, depending on where the twist originates. For femoral retroversion specifically, the osteotomy is performed near the top of the thighbone. It is a significant procedure with months of recovery, and it is typically only offered when conservative treatment has failed and the out-toeing is clearly driving hip or knee pathology.
The Sports Connection
Athletes often become aware of out-toeing because it affects performance or leads to repetitive injuries. In running, a foot that strikes the ground at an outward angle changes how force travels up through the shin and knee. Sprinters and distance runners with significant out-toeing may lose some forward propulsion because their push-off is not directed straight back. Cutting sports like soccer, basketball, and tennis demand rapid internal rotation of the plant leg, which can be limited or uncomfortable when the skeleton favors external rotation.
Ice hockey has its own relationship with the term. In hockey, “slew-footing” is actually a penalty, referring to a dangerous tripping technique where one player kicks another’s skate out from behind while simultaneously pushing them backward. The term’s use in hockey is unrelated to the orthopedic meaning, but the overlap leads to a lot of confused Google searches.
For athletes dealing with the orthopedic version, the focus is usually on managing the alignment they have rather than trying to fundamentally change their skeletal structure. Strengthening hip stabilizers, improving ankle mobility, and sometimes using sport-specific footwear modifications can reduce the injury risk associated with out-toeing without requiring any surgical intervention. Some coaches and movement specialists also work on running mechanics to find a gait that accommodates the person’s natural rotation while still being efficient.
When to Worry and When to Wait
The hardest part of dealing with out-toeing, whether in yourself or your child, is knowing when it is a problem that needs addressing and when it is just how that body is built. A few guidelines are worth keeping in mind.
In children under about six or seven, bilateral out-toeing (both feet turning out roughly equally) that is not causing pain or tripping is almost always benign. A check-in with a pediatrician or pediatric orthopedist can confirm the clinical impression and set expectations, but active treatment is rarely warranted at that stage.1PubMed Central. In-toeing and out-toeing in children
Red flags that warrant a closer look at any age include: out-toeing that appears only on one side, because asymmetry can suggest a structural problem specific to that limb; out-toeing that develops suddenly or worsens quickly, rather than being present from early childhood; pain in the hip, knee, or lower leg associated with the rotated gait; and difficulty participating in normal activities despite effort. A child who cannot keep up with peers on the playground or an adult who has started avoiding exercise because of knee or hip discomfort should be evaluated rather than simply told to stretch.
Flat Feet and Out-Toeing
People sometimes conflate flat feet with out-toeing, and while they are different conditions, they do interact. When the foot’s arch flattens, the heel tends to roll inward (a motion called pronation), and this can make the forefoot splay outward. The result looks like out-toeing, but the rotation is happening at the foot level rather than at the hip or shin. In some people, both things are going on at once: a torsional alignment issue higher up plus flat arches at the foot.
The practical difference matters for treatment. If the out-toeing is mostly driven by flat feet, arch-supporting orthotics can make a noticeable difference. If the rotation is coming from the femur or tibia, orthotics will not change the underlying alignment, and the focus shifts to hip strengthening and gait retraining. A thorough exam that checks each level of the leg separately is the best way to figure out which scenario applies.
Common Misconceptions
One persistent myth is that slew-footed walking can be fixed by wearing corrective shoes during childhood. Decades of evidence have not supported this idea, and most pediatric orthopedic guidelines no longer recommend special footwear for rotational variations. Another misconception is that out-toeing is always a sign of weakness, particularly weak glutes. While weak hip muscles can contribute to the pattern, bony torsion is a structural feature that no amount of strengthening will completely override. Strengthening helps manage symptoms and improve function, but it will not reshape a retroverted femur.
Perhaps the biggest misconception is that out-toeing requires correction in every case. Many people walk with their feet turned outward their entire lives and never have a single related complaint. The goal of treatment, when it is needed, is not to achieve textbook-perfect foot alignment. It is to reduce pain, prevent joint damage, and let the person do the activities they want to do. If the out-toeing is not interfering with any of those things, it is a variation, not a disorder.