The WBAT medical abbreviation means weight bearing as tolerated, an order that lets a patient put as much weight on an injured or operated leg as comfort allows. Pain, not a fixed number of pounds, sets the limit.
It comes from orthopedic surgeons, emergency physicians and physical therapists, and it usually appears after a fracture repair, a joint replacement or a sprain. The order is often paired with a side, such as RLE for the right leg, and with a walking aid. Below is what the order allows, how it compares with stricter weight bearing levels, and what to clarify before going home.
At a glance
Stands for
Weight bearing as toleratedSpecialty
Orthopedics, physical therapy, emergency medicineWritten as
WBAT, wbat, WB as tolUsually paired with
Stricter levels
NWB, TTWB or TDWB, PWBLeast strict level
FWB, full weight bearing
What a WBAT order allows
Weight bearing describes how much of a person's body weight goes through a leg while standing or walking. A WBAT order means the bone, joint or repair is considered stable enough that the patient can decide the load. Some people walk nearly normally on the first day, while others lean heavily on a walker until pain settles.
The order does not force anyone to bear full weight right away, and it does not remove other precautions. A hip replacement patient can be WBAT and still have rules about bending or crossing the legs, so read the whole activity order, not just the four letters.
The weight bearing ladder from none to full
Surgeons choose a level based on the injury and the repair. Physical therapists then teach the patient how to follow it.
| Abbreviation | Full term | What it allows |
|---|---|---|
| NWB | Non weight bearing | No weight at all on the limb; foot stays off the floor |
| TTWB or TDWB | Toe touch or touch down weight bearing | Toes or foot may rest on the floor for balance only |
| PWB | Partial weight bearing | A set share of body weight, often given as a percentage |
| WBAT | Weight bearing as tolerated | Any amount the patient finds comfortable |
| FWB | Full weight bearing | Normal standing and walking |
A patient often moves up this ladder over weeks as healing is confirmed on follow up visits and imaging.
Reading the WBAT medical abbreviation in a real order
Post op order: WBAT RLE with walker, OOB to chair TID, PT eval and treat. This tells the team the patient may stand and walk on the right leg as comfort allows, should use a walker, should spend time seated in a chair on three occasions daily, and should be seen by physical therapy.
Sometimes the order names a joint instead of a limb, such as WBAT left ankle in boot. In that case the boot or brace is part of the order, and walking without it may not be allowed. A therapist note might read amb 150 ft WBAT with FWW, SBA, meaning the patient walked 150 feet with a front wheeled walker while someone stood close by. Our pages on FWW and SBA explain those two parts.
Why surgeons choose as tolerated
Early movement helps prevent stiffness, muscle loss, blood clots and pneumonia, so surgeons allow weight as soon as the repair can take it. Many modern joint replacements and some fracture fixations are strong enough for WBAT right away. Other repairs, such as certain ankle or pelvic fractures, need time before any weight is safe, which is why NWB or TTWB orders still exist.
Only the treating surgeon can change the level. If an order seems different from what you were told, ask before acting on either version.
Questions to ask before going home
- Which leg or joint does the WBAT order cover, and does it include a brace or boot?
- Which walking aid should I use, and for how long?
- Are there other movement precautions with this surgery?
- What kind of pain is expected, and what pain means I should call?
- When will the weight bearing order be reviewed?
More mobility and activity shorthand is collected in the chart notes and nursing section.
Frequently asked questions
What does WBAT mean after surgery?
It means you may put as much weight on the operated leg as you can comfortably manage. Pain guides the amount. Your surgeon may still add other precautions or a walking aid.
Is WBAT the same as full weight bearing?
No. Full weight bearing, written FWB, means normal walking. WBAT allows anything from a light touch up to full weight, depending on comfort, so it can look quite different from one patient to the next.
What is the difference between WBAT and PWB?
PWB, partial weight bearing, sets a limit, often a percentage of body weight. WBAT has no fixed limit and lets comfort decide. A physical therapist usually teaches how much pressure a PWB order means.
Do I need a walker if I am WBAT?
Often yes, at least at first. Many WBAT orders include a walker, cane or crutches for balance and safety. The order or your therapist will say which device and for how long.