Describing gait means breaking down the way a person walks into specific, observable components: the timing of each phase, measurable distances and speeds, what each joint is doing, and any deviations from normal. Whether you’re writing a clinical note, studying for an exam, or learning to assess movement, the key is using consistent terminology and a systematic approach so your description is precise and repeatable.
The Gait Cycle: Stance and Swing
Every gait description starts with the gait cycle, which is one complete sequence from the moment one foot contacts the ground to the moment that same foot contacts the ground again. The cycle splits into two main phases: stance (when the foot is on the ground) and swing (when it’s in the air). At a normal walking speed, stance accounts for about 60% of the cycle and swing about 40%. Roughly 20% of the cycle involves both feet on the ground simultaneously, called double limb support.
The standard naming system comes from the Rancho Los Amigos (RLAH) terminology, which is widely used in rehabilitation and physical therapy. It divides the gait cycle into eight subphases:
- Initial contact (0–2%): The moment the foot first touches the ground, typically with the heel.
- Loading response (2–12%): Body weight shifts onto the leading leg; the foot goes flat.
- Midstance (12–31%): The body passes over the supporting foot as the opposite leg swings forward.
- Terminal stance (31–50%): The heel lifts as the body moves ahead of the supporting foot.
- Pre-swing (50–62%): The last subphase of stance, where weight transfers to the other leg and the knee begins to bend.
- Initial swing (62–75%): The foot lifts off and the leg begins moving forward.
- Midswing (75–87%): The swinging leg passes alongside the stance leg.
- Terminal swing (87–100%): The leg extends forward, preparing for the next initial contact.
Using these subphase names in your description makes it immediately clear which fraction of a second you’re referring to. Instead of writing “when the foot hits the ground,” you’d write “at initial contact.”
Measurable Gait Parameters
Beyond naming the phases, a thorough gait description includes spatial and temporal measurements. These are the numbers that make a description objective rather than subjective.
Step length is the distance from the initial contact of one foot to the initial contact of the opposite foot. Stride length is the distance between two successive contacts of the same foot, so one stride equals two steps. Mixing these up is one of the most common mistakes in gait documentation. Step width is the lateral distance between the two feet, measured perpendicular to the direction of travel.
Cadence is the number of steps per minute. In healthy adults, a slow pace falls around 60 to 79 steps per minute, a medium pace is 80 to 99, and a brisk pace hits 100 or more. A cadence of at least 100 steps per minute is a commonly used threshold for moderate-intensity walking. Vigorous intensity starts above 130 steps per minute.
Walking speed is measured in meters per second and is often called the “sixth vital sign” in rehabilitation settings because it correlates so strongly with functional ability. When comparing across people of different heights, spatial parameters like stride length are sometimes normalized as a percentage of the person’s height, and temporal parameters as a percentage of the gait cycle.
What to Observe at Each Joint
A systematic gait description works from the ground up (or top down) through each body segment. Here’s what normal motion looks like at the major joints during each phase of the cycle.
Ankle and Foot
At initial contact, the ankle is in a neutral position. During loading response, the foot drops flat as the ankle bends slightly downward. Through midstance, the foot stays flat while the shin moves forward over it, pulling the ankle into an upward bend. In terminal stance, the calf muscles contract to lift the heel. By pre-swing, the heel is fully off the ground. Throughout the swing phase, the ankle returns to neutral or a slightly upward position to keep the toes from dragging.
Knee
The knee is nearly fully straight at initial contact, then bends to about 15 degrees during loading response to absorb shock. It straightens again through midstance and terminal stance. During pre-swing, it begins to bend, reaching its peak bend around midswing when both feet are side by side. It then extends again in terminal swing, preparing for the next heel strike.
Hip
The hip starts in a flexed (bent forward) position at initial contact and gradually extends throughout the stance phase, reaching its most extended position during pre-swing. It then flexes again during swing to bring the leg forward, holding that flexed position through midswing before stabilizing in terminal swing.
Pelvis and Trunk
The pelvis should remain relatively level throughout the gait cycle, with only small rotations. The trunk stays upright and centered. Notable deviations include pelvic drop (the pelvis tilts down on one side at initial contact), lateral trunk lean (the torso bends sideways over the stance leg), increased lumbar arch during stance, and forward trunk lean. Each of these compensations points to a different underlying weakness or limitation.
Qualitative Descriptors
Numbers and joint positions don’t capture everything. Qualitative descriptors fill in the picture by addressing the overall quality of movement. When describing gait, consider these dimensions:
- Symmetry: Does one side look different from the other in step length, stance time, or arm swing?
- Smoothness: Is the motion fluid, or are there jerky, halting, or staggering movements?
- Base of support: Is the person walking with feet close together (narrow base) or far apart (wide base)?
- Effort: Does walking appear effortless, labored, or guarded?
- Assistive devices: Note whether the person uses a cane, walker, crutches, or orthotic, and on which side.
- Arm swing: Is it reciprocal (opposite arm and leg moving together), reduced, or absent?
A well-rounded gait description might read: “Patient ambulates with a narrow base of support, symmetric step length, reduced right arm swing, and a mildly guarded quality at self-selected speed using a single-point cane in the left hand.”
Common Abnormal Gait Patterns
Knowing the names of recognized abnormal gait patterns lets you communicate a complex picture in a single term. Each pattern is tied to a specific underlying cause.
Antalgic gait is the limp you see when someone is in pain. They shorten the stance phase on the painful side to minimize how long they bear weight on it.
Ataxic gait is typically associated with cerebellar problems. It looks clumsy and staggering, with a wide base of support. The person may sway while standing still and will struggle to walk heel-to-toe or in a straight line.
Steppage gait (also called neuropathic or equine gait) occurs when someone can’t lift the front of the foot, a condition known as foot drop. To compensate, they lift the knee abnormally high with each step so the toes clear the ground. When it affects one leg, it’s often caused by damage to the nerve running along the outside of the knee or by a compressed nerve root in the lower back. When both legs are affected, it may point to a peripheral neuropathy.
Parkinsonian gait (festinating gait) is marked by a stooped posture with the head and neck pitched forward, flexion at the knees and arms, and short, shuffling steps. The person may have trouble initiating the first step and then take progressively faster, smaller steps, a pattern called festination.
Trendelenburg gait results from weakness in the hip muscles that keep the pelvis level. When the weak side is in stance, the opposite side of the pelvis drops. If both sides are weak, the pelvis drops alternately with each step, producing a waddling pattern often seen in muscular dystrophies and other conditions affecting the hip muscles.
Putting It All Together
A complete gait description follows a logical structure. Start with the overall impression: speed, device use, level of assistance, and general quality. Then move to spatial and temporal parameters if you have them: cadence, step length, stride length, step width. Next, describe what you observe at each body segment through the gait cycle, noting any deviations from the normal joint positions outlined above. Finally, if the pattern matches a recognized abnormal gait type, name it.
For example: “Patient demonstrates a slow, wide-based gait at approximately 70 steps per minute without an assistive device. Step length is shortened bilaterally and symmetric. The trunk sways laterally during stance on both sides. Arm swing is present but reduced. The pattern is consistent with an ataxic gait.” That description gives anyone reading it a clear, reproducible picture of what the person’s walking actually looks like, without ambiguity.