This should normally take place with the patient’s hands resting on a pillow as it can be painful for patients with elbow or shoulder problems to hold their hands up for long.
With the patient’s hands palms down:
Look at the posture and for obvious swelling, deformity, muscle wasting and scars.
Look at the skin for thinning and bruising (signs of long-term steroid use) or rashes.
Look at the nails for psoriatic changes such as pitting or onycholysis (see Figure 10), and evidence of nailfold vasculitis.
Decide whether the changes are symmetrical or asymmetrical.
Do the changes mainly involve the small joints – PIPs and DIPs, MCPs, or the wrists?
Ask the patient to turn their hands over:
Does the patient have problems with this due to radioulnar joint involvement?
With the patient’s hands palms up:
Look again for muscle wasting – if present, is it in both the thenar and hypothenar eminences? If it is only in the thenar eminence, then perhaps the patient has carpal tunnel syndrome. Look for signs of palmar erythema. Look at the wrist for a carpal tunnel release scar.
With the patient’s hands palms up:
Feel for peripheral pulses.
Feel for bulk of the thenar and hypothenar eminences and for tendon thickening.
Assess median and ulnar nerve sensation by gently touching over both the thenar and hypothenar eminences, and the index and little fingers respectively – is sensation normal and equal?
Ask the patient to turn their hands back over, so their palms are face down:
Assess radial nerve sensation by light touch over the thumb and index finger web space.
Using the back of your hand, assess skin temperature at the patient’s forearm, wrist and MCP joints. Are there differences?
Gently squeeze across the row of MCP joints to assess for tenderness (watching the patient’s face for signs of discomfort).
Bimanually palpate any MCP joints and any PIP or DIP joints that appear swollen or painful. Is there evidence of active synovitis? (The joints will be warm, swollen and tender and may have a ‘rubbery’ feel, or you may even detect effusions).
Are there hard, bony swellings? Check for squaring of the carpometacarpal (CMC) joint of the thumb and for Heberden’s nodes on the DIPs. There may be evidence of previous synovitis (thickened,
rubbery but non-tender joints). Compare one joint with another, or with your own, to decide whether the small joints are normal.
Bimanually palpate the patient’s wrists.
Finally run your hand up the patient’s arm along the ulnar border to the elbow. Feel and look for rheumatoid nodules or psoriatic plaques on the extensor surfaces.
Ask the patient to straighten their fingers fully (against gravity). If the patient is unable to do this it may be due to joint disease, extensor tendon rupture or neurological damage – this can be assessed by moving the fingers passively.
Ask the patient to make a fist. If they have difficulty tucking the fingers into the palm, this may be an early sign of tendon or small joint involvement. Move the fingers passively to assess whether the problem is with the tendon or nerves, or in the joint.
Assess wrist flexion and extension actively (e.g. by making the ‘prayer’ sign) and passively (see Figure 11).
In patients where the history and examination suggest carpal tunnel syndrome perform Phalen’s test (forced flexion of the wrists for 60 seconds) – in a positive test this reproduces the patient’s symptoms.
Assess the median and ulnar nerves for power. This can be done by abduction of the thumb, and finger spread, respectively.
Ask the patient to grip your two fingers to assess power grip.
Ask the patient to pinch your finger. This assesses pincer grip, which is very important functionally.
Ask the patient to pick a small object such as a coin out of your hand or check their ability to undo buttons. This assesses pincer grip and function.
Examination of the hand and wrist: checklist
Introduce yourself/gain consent to examine
Inspect hands (palms and backs) for muscle wasting, skin and nail changes
Check wrist for carpal tunnel release
Feel for radial pulse, tendon thickening and bulk of thenar and hypothenar eminences
Assess median, ulnar and radial nerve sensation
Assess skin temperature
Bimanually palpate swollen or painful joints, including wrists
Look and feel along ulnar border
Assess full finger extension and full finger tuck
Assess wrist flexion and extension – active and passive
Assess median and ulnar nerve power
Assess function: grip and pinch, picking up small object
Perform Phalen's test (if suggestion of carpal tunnel syndrome)