How is a free flap different from a skin graft?
A free flap has blood vessels that are reconnected at the repair site.
A skin graft does not have its own reconnected blood supply and depends on the wound underneath to nourish it.
Reconstructive surgery
Free Flap Reconstruction / Free Tissue Transfer
Free flap reconstruction moves living tissue between body areas and reconnects its blood vessels to repair a complex wound or tissue loss.
Does this involve more than one surgical area?
Yes. There is a repair site and a donor site.
The surgeon chooses donor tissue by balancing the reconstruction needed with possible effects on strength, sensation and appearance where tissue is taken.
Will I stay in the hospital?
A hospital stay is usually needed for recovery and frequent flap checks.
The length depends on the reconstruction, your health and how both surgical sites are healing.
01 · Overview
Rebuilding with your own living tissue
A free flap can contain skin, fat, fascia, muscle, bone or a combination. The surgeon separates this tissue from its original blood supply, moves it to the area needing repair and connects its vessels to nearby vessels using microsurgery. [1]
Unlike a pedicled flap, which stays attached to its original blood supply, a free flap is fully detached before transfer. It is also different from a skin graft, which cannot provide the same depth of tissue or its own reconnected circulation. [2]
Free tissue transfer may be considered for breast, head and neck, limb or other reconstruction. The plan is specific to the defect: covering exposed structures, replacing tissue volume or bone, supporting function, or helping a complex wound heal. [2]
- Also called
- Free tissue transfer
- Anesthesia
- Usually general anesthesia
- Surgical sites
- Donor area and reconstruction area
- Key technique
- Microsurgical blood-vessel connection
Why might microsurgery be needed?
Nearby tissue may be missing, scarred, damaged by radiation or unable to reach the wound. Free tissue transfer lets the surgeon bring tissue from elsewhere, provided suitable blood vessels and donor tissue are available.
Does transferred tissue regain normal feeling or movement?
Not necessarily. Sensation may remain reduced or change over time. Some reconstructions include nerve repair or functional muscle transfer, but these require a separate discussion about likely recovery and limitations.
02 · Concerns & Goals
What brings people to this discussion
Cancer treatment, an injury, infection or a difficult wound can leave tissue missing or damaged. Your priorities may include healing, movement, comfort and appearance.
A wound that needs durable coverage
Exposed bone, tendons, vessels or implants may need living tissue coverage rather than a skin-only repair.
Missing tissue after treatment
Removing a tumor or damaged tissue can leave a space that requires skin, soft tissue or bone replacement.
Changes in function
Depending on the area, reconstruction may support walking, swallowing, speech or use of a limb. Rehabilitation may remain essential.
Effects on the donor area
Taking tissue creates another wound and scar. Possible effects on strength, contour and sensation matter when choosing a flap.
03 · Options
How the approaches differ
These are broad free-flap approaches, not interchangeable choices. Your surgeon recommends tissue based on what is missing, available blood vessels and donor-site safety.
Skin and soft-tissue flap
Transfers skin with fat and sometimes fascia.
How it worksTissue and its supplying vessels are moved to provide coverage or replace volume.
May suitSelected surface wounds and soft-tissue defects.
Main tradeoffThickness, donor scarring and sensation changes can affect the result.
Muscle-based flap
Transfers muscle, sometimes together with skin.
How it worksThe muscle's blood vessels are reconnected; a skin graft may be needed over the muscle.
May suitSelected deep defects or wounds needing tissue to fill a space.
Main tradeoffRemoving muscle may affect donor-area strength or function.
Bone-containing flap
Transfers living bone, with soft tissue when needed.
How it worksThe bone's circulation is restored through microsurgery, and the bone is secured at the repair site.
May suitSelected jaw or limb defects that need structural reconstruction.
Main tradeoffBone healing and donor-limb recovery add restrictions and follow-up needs.
Perforator flap
Transfers skin and fat while preserving underlying muscle when possible.
How it worksThe surgeon carefully separates small supplying vessels through or between muscle fibers.
May suitSelected reconstructions where suitable vessels and soft tissue are available.
Main tradeoffThe dissection is technically demanding, and preserving muscle does not eliminate donor-site complications.
Flap names often describe the donor location or blood vessel. Ask what tissue would be taken, what would be preserved and why that choice fits your reconstruction. [1] [2].
Can reconstruction happen at the same time as tissue removal?
Sometimes. Immediate or delayed reconstruction depends on infection control, cancer treatment, the wound, your health and the teams involved.
Will I need another procedure later?
You may. Planned stages can include contour adjustment, bone or dental work, or other functional repairs. Unplanned surgery may be needed for circulation problems, wound issues or flap loss.
04 · Results
What may improve and what may remain
Healing and coverage
The first goal is living tissue that heals into the repair site.
- Early success depends on adequate circulation and wound healing.
- Infection, radiation damage and other health conditions can complicate recovery.
Function
Functional improvement depends on the structures being rebuilt.
- Therapy may help restore mobility or adapt to changes.
- A healed flap does not necessarily restore normal strength, feeling or movement.
Appearance and donor-site balance
Both surgical areas are part of the final result.
- Swelling and scars change over months.
- Differences in contour, color or texture may remain, and revision may be discussed.
Your expected result should be discussed for the specific defect and donor site, rather than inferred from a different type of flap reconstruction. [2]
05 · Recovery
Planning your recovery
Recovery at a glance
- Stay after surgery
- Determined by Your Surgeon
- Initial recovery at home
- Varies by Individual
- Return to desk work
- Varies by Procedure and Work Activity
- Light daily activities
- Based on Individual Recovery
- Strenuous exercise
- Based on Surgeon Clearance
Returning to work does not mean fully healed. Follow your surgeon’s instructions; strenuous activity requires clearance.
Recovery depends on where tissue is moved from and to, whether bone or muscle is involved, and any additional treatment. Your surgical team's instructions take priority over general timelines.
Step 1 · Surgery and immediate monitoring
Treatment day
After reconstruction under anesthesia, the team checks flap circulation and manages pain, fluids and positioning. Drains, dressings or a splint may be used.
Step 2 · The early postoperative period
Hospital recovery
Frequent checks look for changes in blood flow. Staff guide movement, nutrition and care of both sites. A circulation problem may require urgent surgery.
Step 3 · After discharge
Recovery at home
Follow-up checks assess wounds, drains and activity limits. Help with daily tasks may be needed. Restrictions on pressure, lifting or weight bearing depend on the reconstruction.
Step 4 · Weeks to months and sometimes longer
Rehabilitation and settling
Activity increases as healing allows. Therapy, scar care and any later stages are individualized. Returning to work does not mean healing is complete.
Planning everyday activities
ActivityGeneral planning contextWhat affects the plan
Walking and transfersPlanning context: Movement is guided by the hospital and rehabilitation teams. [2]What affects it: A donor leg, repaired limb or positioning requirement can change how you safely move.
Work and daily responsibilitiesPlanning context: Timing depends on the operation and physical demands.What affects it: Fatigue, wound care, mobility limits and additional treatment may delay return.
DrivingPlanning context: Resume only when cleared and able to control the vehicle safely.What affects it: Sedating medicines, restricted movement and difficulty with emergency braking can make driving unsafe.
Exercise and liftingPlanning context: Progress according to donor-site and repair-site clearance. [1]What affects it: Early strain can stress wounds, muscle repairs or healing bone.
Ask for activity instructions that cover both surgical sites, including any restrictions on pressure, positioning and weight bearing.
Before your procedure
- Review the purpose of reconstruction and which outcomes matter most to you.
- Share your medical history, prior operations, radiation treatment and any clotting problems.
- Review all medicines and supplements; change them only as directed.
- Discuss tobacco and nicotine use and the team's requirements before and after surgery.
- Arrange transportation, home support and any recommended mobility equipment.
- Get written guidance on fasting, medicines, admission and whom to call with concerns.
How will the flap be monitored?
The team may assess color, warmth and blood flow using examination and monitoring equipment. The method depends on whether the flap is visible or buried beneath other tissue.
What if I need cancer treatment during recovery?
Your reconstructive and cancer teams should coordinate timing. Wound healing, radiation and medicines can affect the plan, so ask how follow-up and treatment will be shared.
06 · Safety
Risks and what your clinician assesses
Pain, swelling, bruising, fatigue, scars and altered sensation can occur at both sites. Your team should explain which changes are expected for your reconstruction and which need prompt assessment.
Blocked blood flow and flap loss
A clot or other circulation problem can threaten part or all of the flap. Urgent surgery may help restore flow, but another reconstruction may still be needed.
Bleeding or fluid buildup
Bleeding, a blood collection or a fluid pocket may require drainage, transfusion or another operation.
Infection and wound breakdown
Either surgical site may become infected or heal slowly. Wounds can open or develop areas of tissue loss.
Donor-site problems
Possible effects include weakness, contour changes, pain and reduced function. Some abdominal donor procedures also carry a risk of bulging or hernia.
Lasting sensory or functional changes
Numbness, nerve pain, stiffness, uneven contour or incomplete functional recovery may persist.
Anesthesia and general surgical complications
Risks include reactions to anesthesia, breathing or heart complications, and blood clots in the legs or lungs.
Discuss these risks and your individual health history with your surgeon. [2]
What your clinician assesses
- The defect, exposed structures and condition of nearby tissue and blood vessels.
- Available donor tissue and the likely effect of taking it.
- Circulation, diabetes, nutrition, nicotine exposure and overall ability to tolerate surgery.
- Prior surgery or radiation, infection, clotting history and future treatment needs.
07 · Costs
What makes up the Total Procedure & Care Cost
Compare written estimates for the same planned scope: the flap, donor-site repair, hospital care and any expected stages. Insurance requirements and out-of-pocket costs depend on your plan and the reason for reconstruction.
Surgeon
Surgical care
Surgeon services for tissue transfer, vessel connections and donor-site closure.
Ask your surgeonAsk whether other surgical teams, planned stages or revision procedures are billed separately.
Facility
Anesthesia and facility
Anesthesia, operating-room services and hospital care.
Ask your surgeonAsk about network status, inpatient coverage and charges if the stay is longer than expected.
Supplies
Supplies and follow-up
Potential charges for dressings, equipment, medicines, visits and rehabilitation.
Ask your surgeonAsk what is included, what needs separate authorization and how complications are billed.
TRC
Patient Services
Any separately identified care-coordination or administrative services.
Ask TRCAsk whether these services carry a fee, are optional or are covered by insurance.
Your written estimate should explain the services included, any separate charges, and payment terms.
08 · Questions
Common questions
Is a free flap an organ transplant?
No. It usually moves your own tissue within your body. Anti-rejection medicines are not ordinarily needed for this type of transfer.
Does “free” mean there is no charge?
No. The word describes tissue being detached from its original blood supply before transfer.
Can I choose where the tissue comes from?
Your preferences matter, but the tissue needed, vessel anatomy, prior surgery and donor-site risks limit the choices. Your surgeon should explain suitable options.
What happens if the flap fails?
The team assesses whether urgent surgery can restore circulation. If tissue cannot be saved, treatment may involve removing it, managing the wound and planning another reconstruction.
0 consultation questions in your plan
View in My TRC workspaceMy Aesthetic Plan
Prepare for your consultation
Bring these to help your consultation:
- Understand the proposed flap, donor site, alternatives and major risks.
- Have a personalized recovery plan and an urgent-contact pathway.
- Confirm treatment coordination, insurance requirements and a written estimate.
View My Aesthetic Plan
Choices stay in this visit until saving to your account completes. Nothing is sent to a clinician.
Sources
- [1]Mayo Clinic — Breast reconstruction with flap surgeryExplains free versus pedicled tissue transfer, microsurgical vessel connections, muscle-preserving approaches, donor-site considerations and recovery restrictions in breast reconstruction.
- [2]Cleveland Clinic — Health LibraryProvides patient education on flap surgery and microsurgery, including tissue types, reconstructive uses, flap monitoring, surgical complications and postoperative warning signs.
Photographs are illustrative scenes, not patients, staff, facilities or outcomes. This information does not replace a personal assessment by your treating clinician.