Physical Therapy Terminology: A Plain-English Guide to PT Lingo

Physical therapy comes with a vocabulary. The first time you read a plan of care or a home exercise program, you will see words like flexion, abduction, AROM, PROM, WBAT, and SOAP. None of those are meant to confuse you — they are clinical shorthand that lets your therapist, your referring physician, and your insurer talk about the same thing without ambiguity. The problem is that nobody hands you a translation key on day one.

When you understand the language, three things change. You stop guessing whether an exercise is being done correctly. You ask sharper questions during your visit. And you spot mistakes — like a home program that says "perform 3 sets of AAROM shoulder flexion to 120°" when your surgeon's protocol says you should still be in passive range only. Patients who understand the words tend to have better outcomes because they catch problems early and stick to the plan more consistently.

This guide walks through the terminology in the order you are most likely to encounter it: movement and position words first, then strength and exercise terms, then surgical and weight-bearing language, then the abbreviations you will see scribbled on every chart. By the end, you should be able to read a typical PT note and a home exercise program without a dictionary.

Most of physical therapy is about how a joint moves and how a body is oriented in space. These are the building blocks for every exercise instruction.

Range of motion (ROM)

Range of motion is the total amount a joint can move through, usually measured in degrees with a goniometer. Therapists track ROM at the first visit and at intervals throughout care to show whether the joint is loosening up. You will see three flavors: active range of motion (AROM), where you move the joint yourself; passive range of motion (PROM), where the therapist moves it for you; and active-assisted range of motion (AAROM), where you start the motion and the therapist or a strap finishes it.

Flexion, extension, abduction, adduction

Flexion is bending a joint to close the angle — bending your elbow to touch your shoulder, for example. Extension is the opposite: straightening the joint to open the angle. Abduction is moving a limb away from the midline of your body (lifting your arm out to the side), and adduction is bringing it back toward the midline.

Internal and external rotation

Internal rotation turns a limb toward the centerline of your body — think of turning your forearm so your palm faces the floor. External rotation turns it the other way. Shoulder and hip rotation are common targets after rotator cuff repair, total hip replacement, and shoulder dislocation.

Supine, prone, sidelying, quadruped

These describe the position your body is in during an exercise. Supine is on your back. Prone is on your stomach. Sidelying is on your side. Quadruped is on hands and knees. Each position changes which muscles do the work and which joints are loaded, which is why a home exercise sheet will be specific about which one to use.

Isometric, concentric, eccentric

These describe what the muscle is doing during an exercise. Isometric means the muscle generates force without changing length — pushing your palm into a wall, for example. Concentric means the muscle shortens under load, like the upward phase of a bicep curl. Eccentric means the muscle lengthens under load, like slowly lowering that same dumbbell. Eccentric work is especially important after tendon injuries because controlled lengthening reloads the tendon in a way that drives healing.

Progressive overload

Progressive overload is the principle that to keep getting stronger, you have to gradually increase the demand on the muscle — more weight, more reps, more sets, less rest, or a harder variation of the exercise. Your home program should change every two to three weeks for exactly this reason. If it doesn't, you've plateaued.

Proprioception and balance

Proprioception is your body's sense of where it is in space — the reason you can touch your nose with your eyes closed. After an ankle sprain, an ACL reconstruction, or a fall, proprioception is impaired. Balance exercises (single-leg stance, foam-pad work, perturbations) retrain it. Without that retraining, you re-injure the same joint.

If you've had surgery — orthopedic, spinal, or otherwise — your discharge paperwork will include precautions. Misreading them is one of the most common ways people compromise their recovery.

Weight-bearing status

Your surgeon sets how much weight you can put on the operated limb. Non-weight-bearing (NWB) means no weight at all — the foot doesn't touch the floor. Toe-touch weight-bearing (TTWB) lets you rest the foot for balance but bear no weight. Partial weight-bearing (PWB) is usually expressed as a percentage of body weight. Weight-bearing as tolerated (WBAT) means as much as is comfortable without sharp pain. Full weight-bearing (FWB) means no restrictions.

Surgical precautions

These are surgeon-prescribed motions to avoid. Posterior-approach total hip replacement patients, for example, are usually told not to flex past 90°, cross the midline, or internally rotate the hip for the first six to eight weeks. A good in-home therapist confirms the precautions with your surgeon's office before starting and rebuilds the home setup (chair height, toilet riser, sleeping position) around them.

Rehab protocol

A protocol is the surgeon's timeline of what's allowed at each milestone — when ROM can progress, when strengthening can begin, when running or return to sport is permitted. Protocols vary by surgeon and procedure, so the right document is the one your surgeon wrote, not a generic one off the internet.

Therapists shorthand almost everything to save time. Here are the abbreviations you'll see on your home program, your progress note, or a chart you read at the front desk.

If you see one that isn't on this list and your therapist hasn't explained it, ask. A note or home program that the patient can't read is one of the easiest fixes in healthcare — and a sign the therapist is rushing.

Your therapist will ask about pain in specific ways because vague pain reports lead to vague plans. The more precise you are, the better the plan. Three scales come up constantly.

Numeric Pain Rating Scale (NPRS)

Rate your pain 0 to 10, where 0 is no pain and 10 is the worst pain imaginable. You'll be asked to rate pain at rest, with specific movements, and at its worst over the past 24 hours. Tracking these three numbers session to session is one of the clearest signs of whether the plan is working.

Visual Analog Scale (VAS)

Same idea as NPRS, but you mark a point on a 100 mm line instead of choosing a whole number. VAS is more sensitive to small changes — useful in research and in cases where a half-point shift matters.

Quality-of-pain descriptors

Sharp, dull, achy, burning, throbbing, electric, deep, superficial — the quality matters because it points at the tissue. Burning and electric pain hints at nerve involvement; achy, dull, deep pain usually points at muscle or joint structures. Be specific even if it feels odd; therapists are trained to listen for these descriptors.

Functional limitations

More important than any pain number: what can you not do that you used to do? Sit at your desk for more than 20 minutes? Sleep on your right side? Lift your toddler? Reach the top shelf? Functional limitations are what goals are built on, and they're what progress is measured against.

We bill Florida PIP first and MedPay if the auto policy includes it. PT Near Me does not bill commercial health insurance. If terminology on a referral, discharge summary, or surgical protocol isn't clear, our intake team confirms with the referring office before the first visit — so the first session isn't spent guessing.

We also bring the terminology into the patient's actual environment. Reading "WBAT with rolling walker, lead with right LE ascending" on a post-op discharge sheet is one thing. Practicing it on your real stairs with your real walker, in your real shoes, with your real shoulder bag in the other hand, is what makes the language click. That's the difference between a printout the patient never reads and a plan the patient actually uses.