In short. How scars and stiffness limit a hand after injury, what contracture release can restore, and why skin must be reconstructed rather than simply divided.
Key points
- Releasing a contracture creates a defect.
- If that defect is closed under tension, the scar re-forms and the contracture returns.
- That is why contracture surgery almost always pairs release with reconstruction: a skin graft, a local flap, or a Z-plasty that redistributes tension in a different direction.
After a serious hand injury, the first operation saves tissue. What follows is a different problem. Skin heals by contracting, scars mature into tight bands, joints stiffen from immobility, and a hand that was successfully saved can end up unable to open or close. Reconstruction after trauma is the work of turning a salvaged hand back into a useful one.
The three enemies
Scar contracture is the first. A scar that crosses a joint or a web space shrinks as it matures and physically limits movement, pulling a finger into a bent position it cannot straighten. Stiffness is the second and the commonest: joints that are not moved lose their range, and the tissue around them loses its glide. Adhesion is the third, where tendons heal but stick to their bed, so that the muscle pulls and nothing moves.
Assessment before surgery
The examination asks one question: what is limiting this hand? A finger that will not straighten because the skin is tight is treated by releasing skin. One that will not straighten because the tendon is adherent is treated by tenolysis, freeing the tendon. One that will not straighten because the joint itself has stiffened is treated by joint release and therapy. Getting that distinction wrong is why some operations do not help.
Skin must be replaced, not just divided
Releasing a contracture creates a defect. If that defect is closed under tension, the scar re-forms and the contracture returns. That is why contracture surgery almost always pairs release with reconstruction: a skin graft, a local flap, or a Z-plasty that redistributes tension in a different direction. The reconstruction is what stops the release from undoing itself.
What surgery can and cannot achieve
It can improve the arc of movement, correct a fixed bent finger, free an adherent tendon, and restore the ability to open a hand that had closed down. It cannot restore a normal hand. Gains are real but partial, some contractures recur, and a second release is sometimes necessary. A joint that has been stiff for a long time may improve only modestly even after surgery.
Recovery and follow-up
After contracture release and grafting, splinting and therapy begin early and continue for months, and the therapy that follows the operation is inseparable from the outcome. Final assessment is at twelve months or longer. Stiffness remains the most common limitation, and no result is guaranteed.
Seek care if
- A hand becomes pale, cold, blue, or numb, or swelling increases inside a cast or splint.
- A wound becomes red, hot, or discharging, or a fever develops.
- Movement that had been improving is suddenly lost or becomes markedly painful.
Frequently asked questions
What limits a hand most after a serious injury?
Three things. Scar contracture, where a maturing scar crosses a joint and pulls it into a bent position; stiffness, which is the commonest; and adhesion, where a healed tendon sticks to its bed so nothing moves.
Why is releasing a contracture not enough on its own?
Because release creates a defect, and closing that defect under tension lets the scar re-form and the contracture return. Release is therefore paired with reconstruction, such as a graft, a local flap or a Z-plasty.
How much improvement can reconstruction after trauma give?
Gains are real but partial. It can free an adherent tendon, correct a fixed bent finger and improve the arc of movement, but some contractures recur, a second release is sometimes needed, and a long-stiff joint may improve only modestly.
Risks & Limitations
- Incomplete return of sensation or movement. Nerve recovery is slow — roughly a millimetre a day — and some feeling or movement may never come back.
- Stiffness and contracture. A stiff hand is the commonest reason a technically good operation gives a disappointing result.
- Rupture of a tendon repair with forceful use too early in the protected period.
- Infection, which may require antibiotics and further surgery.
- Scarring and scar contracture. Scars are permanent, may stay sensitive or cold-intolerant, and can tether a joint or a web space.
- Growth disturbance in children, which may require later surgery as the hand grows.
- Prolonged hand therapy. Splinting and graded exercise are part of the treatment, not optional aftercare.
- No outcome is guaranteed. Final assessment is made at 12 months or longer, and longer still in growing children.
When to Seek Care
- A hand that becomes pale, cold, blue or numb, or fingers that change colour.
- A wound that becomes red, hot or discharging, or a fever above 38 °C.
- Sudden loss of movement after tendon repair, or a pop felt in the finger.
- Severe pain or swelling in a cast or splint, or a splint that has become too tight.
- Bleeding that does not stop with gentle pressure.
- New or worsening numbness or weakness at any stage after surgery.
References & Further Reading
- American Society for Surgery of the Hand (ASSH) — hand and upper limb condition guidance
- American Society of Plastic Surgeons (ASPS) — reconstructive and hand surgery guidance
- Cochrane Library — systematic reviews in hand surgery and hand therapy
- Chinese Medical Association, Plastic Surgery Branch — clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.