Scaphoid Fracture: Symptoms, Test, Healing Time and How Long in a Cast

Written by Nigel Chua, hand occupational therapist · 21 years treating fingers, hands, wrists, forearms and elbows · Singapore

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Fall, Sore Wrist, “Normal” X-Ray…and a Bone Quietly Dying

A scaphoid fracture is a break in the small wrist bone at the base of your thumb, usually from a fall onto an outstretched hand. The tell-tale sign is sharp tenderness in the hollow at the base of the thumb. Up to 1 in 5 don’t show on the first X-ray. Most undisplaced breaks need 8 to 12 weeks or more in a cast, longer near the top of the bone, and some need a screw. How much movement comes back depends on what you do after the cast. Work it daily, ideally with a hand therapist guiding it, and most people get most of it back within 3 to 6 months of the injury. Leave it, and the full range often never comes back.

Our scaphoid is a small boat-shaped bone with a special talent: hiding…like a ninja.

It’s the most commonly broken of the eight small wrist bones, roughly two out of every three of them. And it’s famous for NOT showing up on day one.

So here’s the pattern I warn every patient about, cos I see the ending of this story in clinic more than I’d like:

Fall > Sore wrist > X-ray “looks fine” > Told it’s a sprain > Pain fades over a few weeks, cos scaphoid pain genuinely does fade. Life goes on…

…and months or sometimes years later, the wrist starts aching, because the bone never actually healed, and part of it has been quietly dying the whole time.

This bone runs on a clock. Caught in the first few weeks, a cast heals most of them. Caught at month 6, you’re talking bone grafts. This article is about which side of that line you’re on.

Where are you right now?

Just fell, thumb-side wrist sore. Do the self-check below, then get imaged this week.
X-ray was “normal” but it’s tender. Jump to Snuffbox pain but a normal X-ray. Told it was a hairline crack in the radius instead? See hairline wrist fracture.
In a cast and counting weeks. Jump to How long in a cast and the week-by-week timeline.
Had a screw put in. Read the surgery section here, then scaphoid surgery recovery.
Old fall, wrist aching months or years later. Jump to What if it doesn’t heal.

What is the scaphoid, and why does it heal so badly?

Our scaphoid bone sits on the thumb side of your wrist, bridging the two rows of wrist bones. Fall onto an outstretched hand, and it’s often the bone that takes the brunt of that fall. (Full map of the eight bones in wrist bones explained.)

The biggest problem with scaphoid fractures…is blood supply. Or plumbing. Blood enters the scaphoid backwards…from the far end (near the thumb), flowing towards the near end (the top of the bone, called the proximal pole). Break it through the middle, and the near half can be cut off from its blood supply entirely.

This is a BIG problem.

Blood…literally brings life and sustains it in our entire bodies. Any organ, any bone, without blood doesn’t heal. It slowly dies off (doctors call this avascular necrosis). It collapses.

And a collapsed scaphoid changes the mechanics of the whole wrist, grinding the other bones into a predictable pattern of arthritis over the following years.

All of that from an injury that was labeled a sprain on day one.

Where the break sits decides almost everything:

Distal pole (thumb end). Best blood supply. Heals fastest and most reliably.
Waist (the middle). The most common spot. Heals slowly. Most undisplaced waist breaks still heal in a cast.
Proximal pole (the top). Worst blood supply. Slowest to heal, highest risk of the bone dying off, and the one surgeons most often fix with a screw.

Scaphoid fracture symptoms and the snuffbox test

After a fall onto the hand, find the hollow at the base of your thumb, on the back of the wrist…the little dip that appears when you stretch your thumb out. (Its actual anatomical name is the anatomical snuffbox. Yes, really. History is fun.)

Press gently into that hollow. Sharp tenderness right there after a fall = treat this as a scaphoid fracture until proven otherwise.

Equally suspicious:

Palm-side bump. Tenderness over the small bony bump on the palm side of the wrist, just below the base of the thumb.
Thumb push test. Pain at that spot when someone pushes your thumb gently back towards the wrist along its length.
Pinch pain. Pain when you pinch thumb-to-index firmly, or twist a jar lid.
Mild swelling on the thumb side, and a grip that feels weak rather than impossible.

What fools people: you can usually still move the wrist. There’s often no obvious deformity, little bruising, and pain that settles to a dull ache within days. A broken bone that lets you carry on is the most dangerous kind.

What does a scaphoid fracture look like?

From the outside: often nothing much. Mild swelling on the thumb side, little or no bruising, no bend in the wrist. That’s why it gets called a sprain.
On the first X-ray: a thin dark line across the bone, most often through the middle (the waist). Early on, that line can be too fine to see. That’s how up to 1 in 5 get missed.
On a repeat X-ray at 10 to 14 days: the line often shows more clearly, as the bone edges along the break are reabsorbed in the first stage of healing.

Snuffbox pain but a normal X-ray: what now?

It was never minor.

That’s the whole point of this article.

A fall plus snuffbox tenderness deserves imaging TODAY. If not, at most…THIS WEEK. And if the first X-ray is normal but the tenderness is real, the correct move is not “great, just a sprain”.

The correct move is one of two things:

A repeat X-ray in 10 to 14 days, with special scaphoid views. A healing fracture becomes visible as the bone edges resorb.
An MRI or CT now. MRI is the most sensitive test for a hidden scaphoid break and also shows bone bruising and ligament damage. CT shows the fracture line, any displacement, and later, whether it has healed. (Got a report full of jargon? Your hand MRI report, translated.)

In the meantime, the wrist gets protected in a splint or cast, usually a forearm-based thumb spica splint. Yes, even without X-ray proof.

Just in case.

Splints are cheap…compared to a possible hidden fracture.

The honest flip side: most people with a tender snuffbox and a normal first X-ray turn out NOT to have a fracture. But nobody can tell which group you’re in by looking. A couple of weeks of unnecessary splinting costs you almost nothing. A missed scaphoid fracture can cost you the wrist…that trade is not close.

Clear scan, still sore? Then you’re in sprain or ligament territory. Read wrist sprain or something worse, and know the ligament next door, the scapholunate ligament, tears in the same fall and also hides on X-ray.

How long in a cast for a scaphoid fracture?

Typical ranges for undisplaced fractures treated without surgery. Your surgeon’s dates win.

Distal pole (thumb end): about 6 weeks, sometimes less for a small chip off the bony bump.
Waist (middle): 8 to 12 weeks, and longer if imaging isn’t convincing. This is the most common one.
Proximal pole (top): 12 weeks or more in a cast, which is why many surgeons recommend a screw instead.

The cast is usually a below-elbow cast, sometimes including the thumb (a thumb spica cast), sometimes not, depending on your surgeon. It’s a long time…but unfortunately our scaphoid does not care about our schedule and work and responsibilities.

Patience is the treatment. The cast comes off when imaging says healed, not when the calendar says bored. Healing on a plain X-ray can be hard to judge in this bone, so a CT scan is often used to confirm the bone has bridged before you load it.

Things that slow scaphoid healing: smoking (the big one), a delay before treatment starts, any displacement, a proximal pole break, and taking the cast off early to “test it”.

How long does a scaphoid fracture take to heal?

Two clocks run here…the bone, and the wrist around it.

Bone, thumb end: about 6 weeks.
Bone, waist: usually 8 to 12 weeks, confirmed on imaging, sometimes longer.
Bone, top (proximal pole): 12 weeks or more, and the slowest to join.
Wrist movement after the cast: comes back over the following weeks to months, IF it gets worked every day, ideally with a hand therapist guiding it. Left alone, it often never fully returns…and I see a lot of stiff, partially clawed hands and fingers from exactly that.
Strength and heavy loading: 3 to 6 months from the injury, and often 6 months to a year before the wrist feels ordinary under heavy load.

So healing time after the cast is mostly about stiffness, not bone. The bone should be confirmed healed before the cast comes off. What’s left is 2 to 3 months of stillness sitting in the joints and tendons around it.

Cast or screw: when does surgery enter?

A small headless screw, put across the fracture through a tiny cut, compresses the fragments and holds them still. Surgery is usually recommended for:

Displaced fractures. Even a millimeter or so of shift makes a cast far less likely to work.
Proximal pole fractures. The bad-blood-supply end.
Late diagnosis. A fracture found weeks after the fall heals less reliably in a cast.
People who can’t afford 3 months in a cast, like manual workers or athletes, after an honest talk about risks either way.

What a screw changes: you usually get out of a rigid cast sooner and start moving the wrist earlier. What it doesn’t change: the bone still has to knit, and that still takes weeks to months. A screw holds the bone still. It can’t bring blood. Heavy loading still waits for imaging-confirmed healing, often around 3 months. The full post-op timeline is in scaphoid surgery recovery.

Scaphoid fracture recovery week by week (cast route)

This is the window the bone runs on. Early, it’s OPEN: the cast does the work. Delay treatment past about 4 weeks and it starts CLOSING. An established non-healed bone with collapse is SHUT for a cast, and the goal changes.

Weeks 0 to 2: cast on, swelling down

Your job: hand above your heart, and a full fist and full straighten of the fingers several times an hour while awake.
Keep moving: the elbow and shoulder, daily. The wrist rests. Nothing else should.
Watch: a cast that feels tighter each day, or numb, pale fingers. That’s a same-day problem. See numb fingers in a cast.

Weeks 2 to 8: the long middle

Normal: very little pain. That’s the trap. Pain going away is not the bone healing.
Your job: keep the cast on and dry, keep the fingers fully moving, keep the shoulder from stiffening. Desk work is usually fine.

Weeks 6 to 12: the imaging decision

Normal: the cast staying on longer than you hoped. A waist fracture still not convincingly healed at 8 weeks often gets more cast time or a CT, not a free pass.
Worth asking: “Has union been confirmed, and on what scan?”

First 4 to 6 weeks out of the cast: motion

Now you will have a healed but fairly stiff, weak wrist. That’s expected after 2 to 3 months in a cast, not a sign something’s wrong. A removable splint for heavier tasks or crowds for the first couple of weeks, then weaned. Daily movement exercises (below). See stiff hand after a cast.

Months 3 to 6: strength and loading

Graded grip and wrist strengthening, then weight-bearing through the hand. Most people have most of their motion back in this period. Strength keeps improving after that, and in my experience the wrist often takes 6 months to a year to feel fully ordinary under heavy load.

The finish line: imaging-confirmed healing plus a wrist you trust under load. Not just “it doesn’t hurt anymore”. Scaphoids have earned the extra suspicion.

The expensive scaphoid fracture is not the one that’s treated. It’s the one that’s missed.

Exercises after the cast comes off

Only once your surgeon has cleared the bone as healed. Gentle, within comfort, no forcing.

Wrist bend and lift. Forearm resting on a table, hand over the edge. Bend the wrist down, lift it up. 10 slow reps, 4 to 5 times a day.
Side to side. Forearm flat on the table, slide the hand towards the thumb and towards the little finger. 10 reps, 4 to 5 times a day.
Palm up, palm down. Elbow tucked at your side, bent to 90 degrees, turn the palm up then down. 10 reps, 4 to 5 times a day.
Tendon glides and thumb circles. Fingers through hook, flat and full fist, then the thumb tip to each fingertip. 5 to 10 rounds.
Strength, from around 2 to 4 weeks out of the cast (if cleared): soft putty squeezes, then wrist curls with a 0.5 to 1 kg (1 to 2 lb) weight, 2 sets of 10, once a day. Progress by small steps, not big jumps.

More detail in wrist exercises after a cast.

When can I do push-ups, go to the gym or play sport?

Push-ups and planks put full body weight through a bent-back wrist, right across the scaphoid. They come LAST.

In the cast: walking, cycling on a stationary bike, legs and core that don’t load the hand. Fine from early on.
Light gym work for the arm: after confirmed healing, starting light and building over weeks.
Push-ups and planks: rarely before 3 months from injury, often 4 to 6. Build up: wall push-ups, then hands on a bench, then knees, then full. Fist or handle push-ups keep the wrist straight and are often tolerated first.
Contact sport, falls risk, heavy lifting: after confirmed healing plus near-normal strength, often 3 to 6 months. Some surgeons allow certain sports earlier in a playing cast. That’s their call, not yours. Graded return in gym after a hand injury.

Work and driving with a scaphoid fracture

Desk work: often within days to a couple of weeks, typing one-and-a-bit handed.
Light manual work: usually after the cast is off and the bone is confirmed healed.
Heavy manual work: often 3 to 4 months or more from injury. See returning to work after a hand injury.
Driving: not while the cast stops you gripping the wheel firmly. The test is whether you could control the car in an emergency, and your insurer may have its own view. See driving after a hand injury.

What if it doesn’t heal? Nonunion and a dying bone

Most scaphoid fractures that are caught early and treated properly DO heal. Some don’t, even with everything done right, and the risk climbs sharply with displacement, a proximal pole break, smoking, and late diagnosis.

Delayed union: slow, but still getting there. Usually more time protected, sometimes a screw.
Nonunion: the bone has stopped trying. A cast won’t fix it now. Usually surgery with a screw and a bone graft, and sometimes a graft with its own blood supply if the top of the bone is dying.
Collapse and arthritis: an untreated nonunion slowly collapses and the wrist wears in a predictable pattern over years. Now the goal changes from healing the bone to a comfortable, useful wrist: partial fusions or removing a row of bones. See wrist arthritis and SLAC wrist.

Everything in that list is what early diagnosis exists to prevent.

What a hand therapist does differently

Custom splints. A molded thumb spica splint during or after casting, fitted so it protects the bone without strangling a swollen hand.
Keeping everything else moving. Fingers, thumb tip, elbow and shoulder, so you don’t come out of 12 weeks with five stiff joints instead of one.
Loading in the right order. Motion, then grip, then weight-bearing, matched to what imaging says about the bone, not to how bored you are.
Spotting what doesn’t fit. Pain in the wrong spot, a clunk, a wrist going backwards. Those go back to your surgeon. More in what a hand therapist does.

Get it checked today if

Fingers in the cast go numb, tingly, pale, blue or cold, or the cast feels tighter and the pain keeps climbing. Go to the ER if your surgeon’s team can’t see you.
The wrist looks deformed after a fall.
Pain escalating weeks in, with a shiny, swollen, color-changed, very sensitive hand. See CRPS.

Get it checked if

You fell, the snuffbox is tender, and the only imaging so far is one normal X-ray. Book the repeat X-ray or scan this week.
A wrist “sprain” is still sore on the thumb side at 2 weeks.
The cast is coming off and nobody has confirmed the bone has healed.
An old fall, and now a thumb-side wrist that aches with use, has lost movement, or clicks. Pain in a different spot? Wrist pain by location sorts it.

A fall plus a tender thumb-side hollow is a scaphoid until a scan says otherwise. The X-ray’s first opinion doesn’t count.

Written by Nigel Chua, hand occupational therapist in practice since 2005. Thousands of hands, wrists and elbows assessed and treated. My credentials are here. This article explains; it doesn’t examine. If you fell weeks ago and that thumb-side hollow is still tender, get imaged now, not later.

Every article on this site is written using the Closing Window Method: name the window your condition runs on, find where you are in it, and act while it’s still open.