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Wrist and finger extension

Radial Nerve Injury

The radial nerve lifts the wrist and fingers and carries feeling from the back of the hand. When it is injured, the wrist drops, the grip loses power and letting go becomes as hard as holding on.

Radial Nerve Injury, Elegance Clinic Surat
Anaesthesia
Regional block, sedation available
Hospital stay
Usually a day care admission
Back to routine
Light work often in two to three weeks
Cost band
Written estimate
Quick answer

Radial nerve injury damages the nerve that spirals around the upper arm bone and opens the hand. The classic sign is a dropped wrist, where the wrist and fingers cannot be lifted against gravity. Some injuries recover on their own with splinting and therapy. Others need the nerve repaired, grafted or, later, a tendon transfer.

Key takeaways
  • The radial nerve straightens the wrist, fingers and thumb, and carries feeling from the back of the hand and the web of the thumb.
  • A dropped wrist that cannot be lifted, while the fingers can still curl, is the classic pattern of radial nerve damage.
  • Because the nerve wraps around the arm bone, radial palsy is common after a fracture of the upper arm.
  • Grip feels weak in radial palsy because the wrist collapses, not because the muscles that bend the fingers have failed.
  • Nerve fibres advance down the arm over months, so improvement is judged by tingling moving further along rather than by sudden change.
Wrist drop: Wrist drop is the term for a hand that hangs limp at the wrist because the muscles that lift it have lost their nerve supply.

What a radial nerve injury actually is

The radial nerve leaves the shoulder and winds around the back of the upper arm bone in a shallow groove before crossing the elbow into the forearm. That course explains a lot. A break in the middle of the upper arm can bruise or trap the nerve where it lies against bone, which is why some patients notice a limp wrist only after their fracture has been treated.

Its work is to open the hand. Muscles supplied by the radial nerve lift the wrist, straighten the fingers at the knuckles and pull the thumb outwards. Feeling comes from the back of the forearm, the back of the hand and the web between thumb and index finger. Bending the fingers is left to other nerves, so a person with radial palsy can still make a weak fist once the wrist is supported.

Not every radial injury needs surgery. When the nerve is bruised but still in one piece, recovery often begins by itself over weeks to months, helped by a splint that holds the wrist up. Where the nerve has been cut or is trapped in a fracture site, repair is needed.

Situations that damage the radial nerve
✦Fractures of the upper arm bone, where the nerve lies directly against it
✦Deep cuts to the back of the forearm or the upper arm
✦Pressure on the arm during deep sleep or a long period of unconsciousness
✦Tight plaster casts or crutches pressing into the armpit
✦Stretch injuries when the arm is pulled hard in a fall or road accident
✦Scarring around the nerve after an earlier operation on the arm

Signs that need prompt medical attention

A wrist that hangs down and cannot be lifted after an arm injury or fracture.
Fingers that cannot be straightened at the knuckles even though they still curl normally.
Numbness over the back of the hand or the web between thumb and index finger.
New weakness in lifting the wrist that appears after a plaster cast is applied.

Who this operation suits

Surgery is considered when the nerve is known to be cut, when it is trapped at a fracture site, or when months pass with no sign of recovery.

May be suitable when
✦A clean division of the nerve seen in an open wound, where the ends can be repaired
✦A nerve trapped or tethered within the healing fracture that will not recover alone
✦No return of muscle power after a reasonable period of splinting and observation
✦Patients able to keep up therapy while the muscles and joints are still supple
May not be suitable when
✦A bruised nerve that is already showing early signs of recovery on testing
✦Fixed stiffness of the wrist and fingers, where releasing the joints comes first
✦Continued smoking or poorly controlled diabetes, both of which slow healing
✦Expecting instant return of wrist lift, which nerve regrowth cannot deliver

How the operation is carried out

01
Assessment and timing

Muscle power is graded and feeling mapped, often more than once, to see whether the nerve is already recovering. Nerve studies help decide whether to wait or to operate.

02
Anaesthesia and exposure

The arm is numbed with a block and sedation offered. Your incision follows the nerve where it winds around the arm bone or crosses the elbow, keeping the field bloodless.

03
Freeing the nerve

Scar tissue and fracture callus around the nerve are cleared under magnification. Sometimes freeing the nerve is the whole operation, if it is intact but tethered.

04
Repair or graft

Cut ends are trimmed to healthy tissue and joined with fine sutures. If they will not meet without tension, a segment of spare sensory nerve is used to bridge the gap.

05
Splint and plan

The wound is closed and a splint holds the wrist up so tendons stay at working length. A therapy schedule is set out before you go home.

What recovery looks like

Day 1 to 3

The arm is elevated and rested in the splint. Pain is usually modest and controlled with simple medication. Fingers are moved gently as instructed.

Week 1 to 2

Dressings and sutures are reviewed. A therapist fits a working splint that supports the wrist while allowing the fingers to be used.

Week 6

Light activity resumes with the splint on. Muscle power has usually not returned yet, which is expected at this stage of nerve regrowth.

Month 6 and beyond

Wrist lift often appears before finger and thumb movement. Progress continues slowly, and if power does not return a tendon transfer can be discussed.

What this operation can achieve

✦Restores a pathway for fibres to reach the muscles that lift the wrist and fingers
✦Improves grip strength indirectly, by allowing the wrist to be held steady
✦Releases a nerve trapped in scar or fracture callus that is causing pain
✦Preserves supple joints through splinting and therapy while recovery is awaited
✦Keeps the option of a later tendon transfer open if nerve recovery falls short

What results are realistic

Outcomes vary with the cause. A bruised nerve after a fracture often recovers well without surgery, while a divided nerve repaired late recovers less predictably. Wrist lift usually returns before finger and thumb movement, and some patients regain enough for daily tasks without reaching their earlier strength. Where power does not return within a reasonable time, tendon transfer offers another route to a working hand. Recovery can vary considerably between people.

Risks you should know about

Nerve surgery on the arm is generally safe, though you should understand the risks before agreeing to it.

Recovery may be partial, leaving wrist or finger lift weaker than before
Infection or slow wound healing, which delays the start of therapy
A tender nerve lump can form in the scar and remain sensitive
Stiff joints if the splint and exercises are not kept up
A patch of numbness where a graft nerve was taken from

Looking after your hand at home

Splinting is the heart of home care here, because it keeps the hand usable while the nerve regrows.

✦Wear the wrist support as instructed so the tendons do not stretch out
✦Move every finger joint daily through its full range to prevent stiffness
✦Keep the arm raised when resting in the first week to limit swelling
✦Protect numb skin on the back of the hand from heat and sharp edges
✦Report any new pain, fever or discharge from the wound without delay

Common beliefs worth correcting

MythA dropped wrist means the tendons have snapped
In practice

In radial palsy the tendons are usually intact. They simply have no nerve signal reaching the muscles that pull them.

MythIf it has not improved in a month, it never will
In practice

Nerve fibres advance slowly, so a month is far too early to judge. Many bruised nerves take several months to show their first movement.

MythSurgery is always needed after a radial nerve injury
In practice

Nerves bruised by a fracture often recover on their own. Operations are reserved for cut nerves, trapped nerves and cases that fail to progress.

MythA splint is only for comfort
In practice

The splint holds the wrist in a working position, protects tendon length and lets you keep using the hand while the nerve recovers.

Why patients choose Elegance Clinic

Radial nerve cases at Elegance Clinic in Surat are followed over time, because deciding when to wait and when to operate is as important as the surgery itself.

✦Repeated, unhurried examination so recovery can be tracked rather than guessed
✦Splints fitted and adjusted to keep the hand usable while the nerve regrows
✦A written estimate before admission, so you know the cost in advance
✦Tendon transfer discussed openly as a planned option if recovery falls short
Cost & insurance

Cost and insurance

Cost for radial nerve surgery depends on whether the nerve simply needs freeing, whether a graft is required and how long the operation and hospital stay run. Splints and therapy sessions also form part of the total. A written estimate is prepared after your examination, covering surgery, anaesthesia, hospital charges and planned review visits. Where the injury followed a road accident or an incident at work, insurance or employer cover may apply and the team will guide you through it.

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Radial Nerve Injury
Written estimate
After assessment
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Charges depend on whether the nerve needs freeing, repairing or grafting, and on theatre and hospital time. Splints and therapy add to the total. A written estimate is given after examination so you can plan before any date is booked.

Operating on the radial nerve is well established and usually done under a block that numbs the arm. Infection, stiffness and partial recovery remain possible, and these are discussed with you honestly before consent is taken.

Skin heals within a fortnight, but nerve recovery is measured in months. Fibres travel slowly down the arm, and wrist lift usually returns before the fingers and thumb. Judging the final result often takes a year or more.

Many patients regain useful wrist and finger extension, particularly when the nerve was bruised rather than cut. Results after late repair are less predictable. When power does not return, tendon transfer can restore a working hand by another route.

No. A nerve bruised by a fracture often recovers with a splint, therapy and time. Surgery is reserved for nerves that have been cut, nerves trapped in a fracture, and cases showing no progress after watchful review.

Clean cuts are best repaired early, within days, while the ends stay healthy. Closed injuries are usually watched for a period first, then operated on if testing shows no recovery, since waiting too long allows muscles to waste.

Each muscle group is graded and areas of numbness mapped, then compared with earlier findings if you have been seen before. Nerve studies may be arranged. Options, timing and a written estimate are explained before you decide.

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