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Hand and thumb arthritis

Also called: Thumb base OA; hand osteoarthritis

Exercise strongly helps Strength Stretch Massage

Pain at the base of the thumb gripping a jar or turning a key, and stiff, knobbly finger joints. The thumb base is the commonest site of hand osteoarthritis, and targeted strengthening of two specific muscles changes it more than anything else.

How common: Symptomatic hand OA in roughly 1 in 5 adults over 40; thumb CMC OA especially in women over 50

Open the Wrist, Hand & Thumb Relief routine All problems

What it is

Osteoarthritis of the hand affects the thumb carpometacarpal joint and the small finger joints most. The thumb base is a saddle joint that trades stability for enormous mobility, and it carries loads many times the pinch force applied - which is why it wears and why it hurts on precise gripping tasks.

The key modifiable finding is muscular. The first dorsal interosseous and the thenar muscles stabilise the thumb base against the shearing forces of a pinch grip. When they are weak the joint takes those forces directly, and strengthening them is one of the few interventions with real evidence.

What it feels like

  • Pain at the base of the thumb turning a key, opening a jar or using a pen
  • Pinch grip weak and painful rather than crushing grip
  • Aching after a period of hand use, easing with rest
  • Stiff and knobbly finger joints, often with visible bony swellings
  • Morning stiffness lasting minutes rather than an hour

What causes it

Most people have more than one of these at once, and they feed each other. Read the list looking for the two or three that sound like your week rather than for the one true answer — the ones that describe you are the ones worth acting on.

Cartilage loss at the thumb base joint
The saddle joint at the base of the thumb takes very high forces relative to the pinch force applied. It is one of the most commonly affected joints in the body.
Weakness of the first dorsal interosseous
This muscle stabilises the thumb base against sideways shear during pinch. When it is weak the joint subluxes slightly with every grip, and strengthening it is the intervention with the best evidence.
Thenar muscle weakness
The muscle bulk at the base of the thumb positions and supports the joint. It wastes with pain and disuse, which then increases joint loading - a self-reinforcing loop.
Repetitive pinching and gripping
Occupational and hobby loads matter - sewing, hairdressing, dentistry, gardening, and years of manual work all involve high repeated pinch forces.
Joint laxity
A naturally lax thumb base joint allows more shear for the same force. This is part of why hand osteoarthritis clusters in families and is more common in women.
Sex and hormones
Hand osteoarthritis is substantially more common in women, and often becomes symptomatic around menopause, which points at an oestrogen-related component in cartilage and ligament.
Genetics
Hand osteoarthritis is one of the more strongly heritable forms. Knobbly finger joints running in a family is a real pattern.
Previous injury
A previous thumb sprain, fracture or dislocation substantially raises the risk of arthritis at that joint decades later.
Age
Prevalence rises steeply after fifty, and radiographic change is close to universal in older adults - though many have no symptoms at all.
Inflammatory arthritis - the different one
Rheumatoid arthritis affects the knuckles and wrists symmetrically with prolonged morning stiffness and soft swelling. It needs entirely different treatment and early diagnosis matters greatly, so the distinction is worth making.

Who tends to get it

  • Women over fifty, in whom it is very common
  • Anyone with a family history of knobbly finger joints
  • People in occupations or hobbies involving repeated strong pinching
  • Anyone with a previous thumb injury
  • People with generally lax joints

What makes it worse, and what settles it

Makes it worse

  • Repeated strong pinch grips - keys, jars, pinching a phone, wringing cloths
  • Squeezing a ball hard, which loads the thumb base rather than helping it
  • Long periods of writing or fine handwork without breaks
  • Cold, which stiffens the joints
  • Complete avoidance, which weakens the stabilisers further

Settles it

  • Strengthening the first dorsal interosseous specifically, which is the single best-evidenced exercise here
  • Thenar and general hand strengthening within comfort
  • Joint protection - using tools and technique that spread the load rather than pinching
  • A thumb splint for symptomatic periods and for heavy tasks
  • Heat and gentle massage for the stiffness

What actually helps

The short version: Cartilage loss at the CMC and IP joints with first dorsal interosseous and thenar weakness

Strength work: Hands, Fingers, Forearms, Grip; Arms: Forearms: Wrist Flexors and Extensors; pinch and putty work

Stretching: Hands, Fingers, Wrists

Massage: Hands, Fingers

Also worth doing: Joint protection; thumb spica orthosis for the CMC joint

What the evidence says: Hand exercise programs give small but real improvements in pain and function. Orthoses help the thumb base more than exercise does.

The names above are the Targets qFIT tracks — the Muscle Guide explains what each one does, and Quick Add switches on the Exercises you already have.

The qFIT routine for this

Ready-made routineWrist, Hand & Thumb Relief

qFIT already has this one built. It runs massage first, then stretching, then strength — the order that works on a body that is already sore — and every activity in it carries the reason it is there.

The button below opens your Checklist with this routine already selected, so instead of your whole list you land on just its Categories, Targets and Exercises, each with its checkbox, ready to tick as you work through them.

Open this routine in my Checklist

Have more than one problem? Tick yours under My Problems on My Profile and your Checklist's Routine list gains Recommended for my problems — every routine for the problems you picked, merged into one. Your picks stay private; that filter is the only thing they feed.

Get it checked if…

Hot swollen joints with morning stiffness over an hour suggests inflammatory arthritis - refer

And whatever the body part: chest pain or unusual breathlessness on exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or one calf that is swollen, warm and painful. Any of those, stop and get assessed.

How it usually goes

Targeted hand and thumb exercise reduces pain and improves function over eight to twelve weeks and it needs continuing. It does not reverse the joint change, and it works better combined with joint protection and, for many people, a splint for high-load tasks. Symmetrical swelling of the knuckles with morning stiffness lasting over an hour is a different disease - inflammatory arthritis - where early medical treatment changes the long-term outcome substantially and delay is costly.

Prevalence basis: Framingham and equivalent cohorts

Others the same routine covers

These share the Wrist, Hand & Thumb Relief routine, so the work is the same. If one of them also sounds like you, that is a reason to expect more from it, not less.

Weak grip and hand strength Carpal tunnel syndrome Wrist pain in push-up and plank positions Wrist and hand pain from desk and phone use Little-finger-side wrist pain Thumb-side wrist pain Trigger finger Numb ring and little finger Climbing finger injuries Musician and gamer overuse

This is general information, not a diagnosis, and it cannot examine you. If it matches you, use it to ask better questions of a clinician rather than to replace one.

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