Compression garments are specially designed socks, stockings, sleeves, bras, wraps and abdominal garments that apply controlled pressure to part of the body. They are used after certain surgeries and during long-term treatment for swelling, poor circulation and lymphedema.
Compression provides a gentle external support for tissue and helps guide fluid or blood in the intended direction instead of allowing it to collect in one area. Medical compression is different from ordinary tight clothing because the pressure is measured, placed carefully, and often graduated.
Why compression is used after surgery
Surgery causes a normal inflammatory response that may lead to temporary swelling. Movement may also be limited during recovery, which can slow blood and lymph circulation.
Depending on the procedure and medical history, compression may help:
- Limit swelling and bruising after a surgery
- Support healing tissue
- Reduce discomfort caused by fluid accumulation
- Improve blood return from the legs
- Lower the risk of blood pooling during reduced mobility
- Maintain improvements achieved through lymphedema therapy
Compression is often considered after lymph node removal or radiation for breast cancer, prostate cancer and colorectal cancer. It may also be part of long-term care for swelling associated with lymphoma, advanced cancer, chronic venous insufficiency or prolonged immobility.
Compression does not replace blood-thinning medication or medical evaluation for a suspected clot.
Types of compression garments
Different products serve different purposes:
- Compression socks and stockings support the feet, ankles and legs
- Arm sleeves and gloves help manage swelling after breast or lymph node surgery
- Short-stretch bandages are often used during the initial reduction of lymphedema
- Adjustable wraps may be easier to apply than tight stockings
- Post-surgical bras support breast and chest tissue after lumpectomy, mastectomy or reconstruction
- Abdominal binders support the abdomen after selected procedures
- Anti-embolism stockings are commonly used for people with limited mobility and are not identical to everyday graduated compression socks
Postoperative use should begin only when directed by the surgical team. The correct garment depends on the procedure, circulation, incision location, drains and degree of swelling.
What does mmHg mean?
Compression pressure is measured in millimeters of mercury, abbreviated mmHg. The measurement describes how firmly a garment presses against the body. It does not represent the wearer’s blood pressure.
Common stocking and sock ranges include:
- 8 to 15 mmHg: Mild support for minor tiredness or swelling
- 15 to 20 mmHg: Moderate support for travel, prolonged sitting or standing and mild swelling
- 20 to 30 mmHg: Firm medical compression often used for venous disease or diagnosed swelling
- 30 to 40 mmHg: Extra-firm medical compression generally used under professional supervision
Compression classifications are not completely uniform among manufacturers and countries. A clinician or trained fitter should select the pressure for a medical condition.
How graduated compression works
Graduated stockings are usually tightest near the ankle and gradually become less tight farther up the leg. This pressure pattern helps move blood and fluid upward against gravity.
A useful comparison is squeezing toothpaste from the bottom of a tube. Pressure must begin below the material being moved. A stocking that bunches, rolls or ends directly over a swollen area may create the opposite effect and restrict flow.
Compression sleeves follow a similar principle in the arm. Lymphedema garments may use different materials and knitting methods than products intended mainly for vein problems. Professional fitting is especially important when hand, finger, foot or toe swelling is present.
How compression bras are measured
Post-surgical and compression bras are usually not labeled with an mmHg number. Their support is commonly determined through:
- Band and cup sizing
- Chest and under-bust measurements
- Fabric elasticity
- Closure adjustment
- The amount and location of surgical support
A recovery bra should generally feel secure and supportive without restricting breathing, cutting into the skin or pressing painfully against an incision. Many surgical programs recommend a front-closing, wire-free bra because it is easier to put on while arm movement is limited. Specific duration and tightness depend on the procedure and surgeon’s instructions.
Safe use and fit
Good compression should feel firm but tolerable. Proper use often includes:
- Applying stockings early in the day before swelling increases
- Smoothing wrinkles rather than folding or rolling the garment
- Keeping the garment clean and dry
- Inspecting the skin each day
- Replacing stretched or damaged garments
- Removing daytime garments before sleep unless otherwise directed
The garment should be removed and the care team contacted if it causes increasing pain, numbness, skin discoloration, cold fingers or toes, open skin, breathing difficulty or worsening swelling.
People with circulation problems, wounds, heart failure, active infection or a possible blood clot require medical assessment before starting compression.
Long-term management
Compression controls swelling and circulation while it is being worn, but it usually does not correct the underlying cause. Symptoms may return if the garment is stopped, loses elasticity or no longer fits.
Used correctly, compression clothing can support recovery and make chronic swelling easier to manage. RxVitaPharm offers educational guidance on compression products, lymphedema care and supportive oncology recovery so that garment choices can be discussed more confidently with the treating team.