The Pincher Strength Palm + Digit 3–5 Test measures how much force a client can produce when compressing between the palm and Digits 3–5, the middle, ring and little fingers. This is a protocol-specific hand-strength assessment that focuses more on the ulnar-side finger group and palm compression pattern than on the thumb–index pinch used in many standard pinch tests.
This test may be useful when a professional wants to assess force production in a palm-to-fingers position that may relate to holding small objects against the palm, controlling tools, gripping fabric, carrying smaller items, maintaining contact with handles, grappling grips, climbing holds, manual work and tasks where the middle, ring and little fingers contribute meaningfully to hand force.
A pincher or compatible force device is used to measure force during maximal or repeated pinch/compression assessments. When used on its own, a pincher primarily measures peak force, which is the highest force value produced during the test. When pincher data are recorded with Measurz, results can be used to support peak force, side-to-side comparison, repeated-trial comparison, progress tracking, force relative to body mass, fatigue or repeated-effort monitoring where the protocol supports it, and time-based force analysis where compatible data are available.
For most routine Palm + Digit 3–5 tests, peak force is usually the main metric. Best trial, average force, side-to-side difference, dominant versus non-dominant comparison and force relative to body mass may also be useful. Fatigue index should only be used if repeated or sustained efforts are part of the protocol.
The result can support assessment reasoning and progress tracking, but it does not diagnose hand, finger, wrist, elbow or shoulder pain, confirm pathology, explain symptoms on its own, clear sport participation, clear work duties or replace professional judgement.
The Pincher Strength Palm + Digit 3–5 Test is a maximal isometric hand-strength assessment performed between the palm and the middle, ring and little fingers. The client presses the pincher or force device using a defined palm-to-Digits 3–5 contact pattern while maintaining a consistent hand, wrist, forearm, elbow and shoulder position.
This test primarily measures force output in a specific palm-to-ulnar-digits setup. It reflects the combined contribution of middle finger force, ring finger force, little finger force, intrinsic hand muscle contribution, finger flexor contribution, palm contact stability, wrist position, contact width, effort quality, confidence and task familiarity.
Palm + Digit 3–5 is not the same as thumb–index tip pinch, key pinch, palmar pinch or three-jaw chuck pinch. Standard tip pinch usually uses the thumb and index finger. Key pinch uses the thumb against the side of the index finger. Palmar or three-jaw chuck pinch commonly uses the thumb, index and middle finger. Palm + Digit 3–5 does not primarily use the thumb as the opposing digit, so it should be recorded as its own protocol.
Consistent setup matters because small changes in palm contact, finger contact, device width, wrist angle, forearm position, elbow position, shoulder position, device placement, hand dominance and instructions can change the result.
This test does not fully measure hand function, dexterity, coordination, endurance, sensation, pain source, tissue status, sport performance, work capacity or whole upper-limb strength on its own.
Explain that the test measures how strongly they can press between the palm and the middle, ring and little fingers. Record baseline symptoms, middle finger pain, ring finger pain, little finger pain, palm discomfort, hand pain, wrist pain, forearm symptoms, elbow symptoms, shoulder symptoms, paraesthesia, recent gripping or pinching workload, recent training load, sport exposure, work exposure and confidence with maximal effort.
Ask which hand is dominant. Record whether the dominant or non-dominant hand is tested first.
Confirm the exact test setup before starting. For example:
Palm against Digits 3–5 using a broad device contact
Palm contact with middle, ring and little fingers pressing into the device
Middle, ring and little fingers flexing towards the palm
Another clearly defined palm-to-ulnar-digits contact pattern
Use 1–2 submaximal practice trials before maximal testing so the client understands the contact position, device placement and effort required.
Use a repeatable position such as:
Client seated upright
Shoulder relaxed and close to the body
Elbow flexed to approximately 90 degrees
Forearm in neutral unless another position is intentionally selected
Wrist near neutral or slight extension
Palm positioned against one side of the pincher or force device
Digits 3–5 positioned against the other side of the device
Thumb and index finger relaxed unless they are needed only to lightly guide the device without contributing force
Trunk upright and still
Feet supported if seated
Record the exact position used. If a standing protocol, straight-arm protocol, overhead protocol or task-specific arm position is used, record that separately and do not compare it directly with seated bent-arm results unless the same protocol is repeated.
Use the same pincher, pinch gauge or compatible force device for baseline and retesting. Record the device type and whether it reports force in kilograms, pounds, Newtons or another unit.
Check that the pincher is functioning correctly and that the display or recording system is ready before each trial.
When recording with Measurz, document:
Test name
Hand tested
Hand dominance
Contact pattern
Digits included
Whether thumb or index assisted
Shoulder position
Elbow position
Forearm position
Wrist position
Device setting or contact width if adjustable
Number of trials
Contraction duration
Rest period
Peak force
Symptoms
Notes about compensation or invalid trials
Place the pincher or force device so force is produced between the palm and Digits 3–5.
A practical standard setup may be:
Palm contact on one side of the device
Middle, ring and little finger pads or finger segments on the other side
Thumb and index finger relaxed where possible
Digits 3–5 pressing smoothly into the device
Wrist kept steady
Device kept still without twisting or slipping
Force applied smoothly and directly into the device
Record whether all three fingers are contacting the device equally or whether the setup emphasises certain fingers. If the device shape only allows partial contact, record that clearly.
Palm + Digit 3–5, Digit 1 + 2, Digit 1 + 2–3, Digit 1 + 2–5, key pinch and gross grip are different tests and should not be treated as interchangeable.
Ask the client to keep the shoulder, elbow, forearm and wrist still while pressing between the palm and Digits 3–5. The force should come from the selected palm-to-ulnar-digits contact rather than from body movement or device bracing.
Watch for:
Thumb assisting
Index finger assisting
Device twisting
Palm sliding
Middle finger sliding
Ring finger losing contact
Little finger losing contact
One finger dominating the effort
Wrist flexing or extending during the effort
Wrist deviation
Forearm rotation
Elbow lifting or dropping
Shoulder hiking
Trunk leaning
Breath holding
Pain-related guarding
The aim is a controlled maximal effort using the same palm-to-Digits 3–5 contact each time.
Use consistent instructions such as:
“Place your palm on this side and your middle, ring and little fingers on the other side.”
“Keep your thumb and index finger relaxed unless I ask you to lightly guide the device.”
“When I say go, press as hard as you can.”
“Keep pressing until I say stop.”
“Keep your wrist and arm position still.”
“Keep breathing.”
“Tell me if you feel pain, tingling, numbness, cramping or anything unusual.”
Use the same wording at retest where possible.
A practical routine protocol is:
1–2 practice trials per hand
2–3 recorded maximal trials per hand
Each maximal effort held for approximately 3–5 seconds
30–60 seconds rest between maximal trials
Longer rest if fatigue, pain, finger discomfort, palm discomfort or cramping occurs
Record either the best trial or the average of recorded trials. Best trial is commonly useful for maximal force testing. Average force may be useful when repeated trials are used to reduce the influence of one unusually high or low attempt.
Use the same scoring method at retest.
Repeat or mark a trial as invalid if:
The thumb contributes force when it should not
The index finger contributes force when it should not
The palm slides
One or more of Digits 3–5 lose contact
The device twists or slips
The wrist position changes substantially
The forearm rotates unexpectedly
The elbow angle changes
The shoulder lifts or braces
The trunk leans
The client uses an unintended gross grip pattern
The client starts before the recording is ready
Pain, tingling, numbness or cramping limits effort
The client does not understand the task
The effort is clearly submaximal
Record middle finger, ring finger, little finger, palm, hand, wrist, forearm, elbow or shoulder symptoms during and after testing. Also record tingling, numbness, cramping, skin discomfort, callus discomfort, nail discomfort, apprehension and confidence.
Do not repeatedly test through worsening symptoms, significant paraesthesia, strong pain or severe cramping.
For retesting, match the same device, contact position, digits included, hand order, shoulder position, elbow angle, forearm position, wrist position, contraction duration, rest period, scoring method and symptom recording.
The Pincher Strength Palm + Digit 3–5 Test may be useful for:
Baseline palm-to-ulnar-digits strength assessment
Right-left comparison
Dominant versus non-dominant hand comparison
Progress tracking
Strength profiling
Monitoring change over time
Client education
Ulnar-side finger contribution context
Sport contexts requiring middle, ring and little finger contribution
Workplace contexts involving tools, handles, fasteners, packaging, components, equipment handling or repeated manual tasks
Fitness and performance contexts where ulnar-side finger force matters
Comparing palm-to-Digits 3–5 force with thumb-based pinch or gross grip force
Comparing absolute force with force relative to body mass where appropriate
This test should support assessment reasoning. It should not be used as a stand-alone diagnostic, clearance or performance-prediction tool.
The test primarily measures force output between the palm and Digits 3–5 in the selected setup.
It may provide useful information about:
Maximal palm-to-ulnar-digits force
Right-left difference
Dominant versus non-dominant hand difference
Force relative to body mass
Change from baseline
Confidence with ulnar-side finger compression
Symptom response during testing
Repeated-trial consistency
Middle, ring and little finger contribution
Palm-to-finger force compared with thumb-based pinch or gross grip strength
It does not fully measure:
Hand function
Dexterity
Coordination
Sensation
Endurance, unless a repeated or sustained protocol is used
Work capacity
Sport performance
Pain source
Tendon status
Nerve function
Readiness for sport or work
A higher score may suggest greater palm-to-Digits 3–5 force output in that specific setup. A lower score may suggest reduced force output, but the reason should be interpreted carefully.
Lower force may be influenced by pain, apprehension, poor familiarisation, fatigue, guarding, palm position, middle finger position, ring finger position, little finger position, contact area, finger contribution, device width, wrist angle, forearm position, elbow position, shoulder position, hand dominance, device type, skin discomfort, nail discomfort, callus discomfort, breath holding, client confidence, motivation and effort.
One result should not be interpreted in isolation. Interpretation is strongest when the same setup is repeated over time. The result should be interpreted alongside symptoms, confidence, hand dominance, contact pattern, sport or work demands, related tests and functional goals.
Important influences include:
Pain
Apprehension
Poor familiarisation
Fatigue
Guarding
Palm contact position
Middle finger position
Ring finger position
Little finger position
Whether the thumb assists
Whether the index finger assists
Device width
Device surface
Contact area
Wrist angle
Forearm position
Elbow position
Shoulder position
Hand dominance
Skin discomfort
Nail discomfort
Callus or grip friction
Breath holding
Client confidence
Motivation and effort
Recent training or manual workload
Whether the device twists or slips
Force can be expressed relative to body mass when useful, especially for sport, workplace or performance contexts. However, body weight percentage reference ranges are more commonly discussed for gross handgrip strength than for isolated or protocol-specific palm-to-finger compression tests.
For this test, body-mass-normalised values may be useful for tracking the same client over time, but they should not be used as universal pass/fail scores.
For Palm + Digit 3–5 testing, the strongest comparisons are usually:
The client’s own baseline
Right versus left hand
Dominant versus non-dominant hand
Same contact pattern repeated over time
Symptoms during testing
Manual task demands
Sport, work or training demands
Related grip, pinch, wrist, elbow and shoulder tests
Reference values can help provide context, but they should not be used as diagnostic, clearance or pass/fail cut-offs.
Published reference values for this exact Palm + Digit 3–5 pincher protocol are limited. Most common published pinch norms describe tip pinch, key pinch and palmar or three-point pinch rather than palm-to-middle-ring-little-finger compression.
Closest available reference data include:
Mathiowetz and colleagues reported adult grip and pinch strength norms from 638 adults aged 20–94 years. The study included grip strength, tip pinch, key pinch and palmar pinch.
Standard pinch testing commonly recognises tip pinch, key pinch and palmar or three-jaw chuck pinch as different tests.
Palm + Digit 3–5 is not a standard tip, key or palmar pinch test because it does not primarily involve the thumb opposing the fingers.
Pinch strength differs by age, sex, hand side and hand dominance.
Werle and colleagues reported age- and gender-specific grip and pinch reference values in a healthy Swiss population and noted differences by population and occupational group, supporting cautious use of norms across settings.
Device type matters. A hydraulic pinch gauge, electronic pincher and app-connected force device may not produce directly interchangeable values.
Device width and contact area may strongly affect this test because multiple ulnar-side fingers and the palm are involved.
Because Palm + Digit 3–5 is not a standard normed pinch type in most common reference datasets, interpretation should rely on baseline comparison, side-to-side comparison, repeated testing, symptoms, confidence and setup consistency.
Use this order:
Compare with the client’s own baseline.
Compare right and left hands where relevant.
Consider hand dominance.
Confirm the exact palm-to-finger contact pattern used.
Consider whether all intended fingers contributed.
Consider whether the thumb or index finger assisted.
Consider symptoms during and after testing.
Consider confidence and effort quality.
Review whether the device slipped or twisted.
Compare with related gross grip, Digit 1 + 2 pinch, Digit 1 + 2–3 pinch, Digit 1 + 2–5 pinch, wrist, elbow or shoulder tests.
Relate the result to the client’s sport, work, exercise or daily-life demands.
Retest under the same conditions to monitor change.
Do not use reference values as pass/fail criteria.
Peak force
Use for maximum palm-to-Digits 3–5 force output, baseline force, right-left comparison, dominant versus non-dominant hand comparison, progress tracking and comparing force across retests.
Look for best score or average score, consistent contact position, consistent device position, side-to-side difference, change from baseline, symptoms, confidence and compensation during maximal effort.
Average force
Use for summarising repeated trials, reducing the influence of one unusually high or low attempt and tracking consistent output.
Look for whether repeated trials are consistent, whether one trial is unusually high or low, whether average force changes over time and whether fatigue affects later trials.
Force relative to body mass
Use cautiously for sport, workplace or performance contexts where relative strength may help provide context.
Look for whether body-size context matters for the client’s goal, whether absolute force and relative force tell a different story and whether force relative to body mass changes over time using the same setup.
Side-to-side difference
Use for right-left comparison, dominant versus non-dominant hand comparison and monitoring asymmetry over time.
Look for whether one hand is consistently lower, whether the difference is expected due to dominance, sport or work demands, whether symptoms or confidence influence one side and whether the same contact position was maintained on both sides.
Time to peak
Use when the device captures how long it takes the client to reach peak force.
Look for delayed peak force, faster time to peak across retests and whether a slower time reflects caution, pain, poor cueing, device handling or confidence.
Rate of force development
Use when rapid force matters, such as sport, tactical, workplace or tool-handling contexts.
Look for early force production, whether rapid output changes over time, whether rate of force development improves while peak force stays similar and whether familiarisation influences the result.
Youth clients
Consider growth, maturation, hand size, finger size, coordination, attention, training age, device size, contact position and familiarisation. Smaller hands may require careful device setup and clear practice trials.
Adults and general fitness clients
Use the test for baseline palm-to-ulnar-digits strength, progress tracking, confidence with manual tasks and comparison with grip strength or thumb-based pinch tests.
Older adults
Palm-to-Digits 3–5 force can provide useful context for daily tasks such as holding objects against the palm, opening packaging, carrying small items, managing household tools and controlling objects in the hand. Use adequate rest periods and consider fatigue, confidence and function.
Athletes and sport clients
Relevant sports may include climbing, grappling, martial arts, racquet sports, gymnastics, rowing, weightlifting and field or court sports. Peak force alone does not equal sport performance, but it can support a broader hand-strength profile.
Workplace and manual task clients
Consider occupational demands such as tools, handles, fasteners, wires, components, packaging, instrument handling, carrying, pulling, pushing and repeated hand tasks. Do not use one score to clear work duties.
Clients returning after injury
Use the test to monitor force output, confidence, symptom response and comparison with the opposite side. Strength alone should not confirm readiness.
Clients with pain or persistent symptoms
Pain, fear, guarding, fatigue, apprehension and confidence may reduce force. Middle, ring, little finger, palm, wrist or hand symptoms should be recorded and interpreted alongside related tests.
Higher body mass clients
Absolute force and force relative to body mass may both be useful, but body weight percentage should be interpreted cautiously for this protocol-specific test. Avoid assumptions based on body size.
Smaller hands or different hand sizes
Device width, contact area, finger length and palm position can strongly influence results. Record the chosen contact setup and repeat it at retest.
Repeatability improves when the same setup is used each time. Standardise and record:
Same test position
Same device
Same device width or contact setup
Same contact pattern
Same digits included
Same palm contact point
Same middle finger contact point
Same ring finger contact point
Same little finger contact point
Same hand tested first
Same hand dominance recording
Same shoulder position
Same elbow position
Same forearm position
Same wrist position
Same instructions
Same contraction duration
Same rest period
Same scoring method
Same symptom and compensation recording
Published pinch norms are most useful when the test protocol matches the normative protocol. Palm + Digit 3–5 does not closely match standard tip pinch, key pinch or palmar pinch, so reference data should be used cautiously. The strongest evidence for this specific protocol will usually come from the client’s own repeat testing using the same setup.
Common errors include:
Not defining the exact contact pattern
Allowing thumb or index finger assistance when not intended
Allowing one finger to dominate the effort
Allowing one or more of Digits 3–5 to lose contact
Device twisting
Palm sliding
Finger sliding
Inconsistent device placement
Inconsistent wrist position
Inconsistent elbow position
Shoulder compensation
Trunk leaning
Breath holding
Poor familiarisation
Testing too quickly between trials
Comparing Palm + Digit 3–5 directly with tip pinch, key pinch or palmar pinch
Treating the score as a diagnosis
Ignoring hand dominance
Ignoring hand size or finger size
Limitations include:
Testing is setup-dependent.
Force output does not fully represent hand function.
Force output does not fully represent dexterity.
Force output does not fully represent coordination.
Force output does not fully represent sport performance.
Force output does not fully represent work capacity.
Pain, fear or guarding can reduce force output.
Peak force does not measure endurance unless repeated or sustained efforts are used.
Published norms are not universal across devices or protocols.
Palm + Digit 3–5 values should not be treated as identical to tip pinch, key pinch, palmar pinch, thumb-to-fingers pinch or gross grip values.
The Pincher Strength Palm + Digit 3–5 Test may be useful for:
Baseline palm-to-ulnar-digits strength assessment
Right-left comparison
Dominant versus non-dominant comparison
Progress tracking
Strength profiling
Client education
Ulnar-side finger contribution context
Sport preparation
Workplace context
Monitoring response to exercise or intervention
Comparing palm-to-Digits 3–5 force with grip strength
Comparing with thumb-based pinch tests, wrist, elbow or shoulder tests
General hand-strength context
Comparing absolute force with force relative to body mass where appropriate
If force is low on both sides, consider assessing device setup, contact position, familiarisation, middle, ring and little finger contribution, wrist position, gross grip strength, thumb-based pinch tests and recent workload.
If one hand is much lower, compare with hand dominance, symptoms, previous injury, sport demands, work exposure, finger strength, wrist strength, grip strength and related upper-limb findings.
If Palm + Digit 3–5 force is much lower than gross grip, consider whether this reflects the protocol-specific nature of the test, device width, confidence, symptoms or reduced contribution from the ring and little fingers.
If force is lower than expected, review whether the device width is suitable, whether all intended fingers are contributing and whether the client is confident with the task.
If symptoms limit the result, record the symptom location, review contact position and compare with related findings rather than forcing repeated maximal trials.
If force is good but function is limited, consider assessing dexterity, coordination, sensation, endurance, grip strength, thumb-based pinch strength, wrist range of motion, elbow strength, shoulder strength, confidence and task-specific demands.
If fatigue appears quickly, consider whether repeated hand tasks, sustained holds, rest periods, workload, sleep, recovery or symptoms are influencing performance.
If the client is improving, keep the same setup and monitor whether force, symptoms, confidence and task tolerance improve together.
Position: Seated upright or chosen repeatable position
Shoulder position: Relaxed, close to body unless another position is intentionally selected
Elbow position: Bent, commonly around 90 degrees
Forearm position: Neutral unless another position is intentionally selected
Wrist position: Near neutral or slight extension, recorded consistently
Contact pattern: Palm + Digit 3–5 palm-to-ulnar-digits contact
Digits used: Middle, ring and little fingers against the palm/device
Thumb/index role: Relaxed or lightly guiding only, unless intentionally included
Hand tested: Record right, left and dominance
Device setting: Record pincher type, device width and contact setup
Trials: 1–2 practice trials, then 2–3 recorded maximal trials per hand
Contraction duration: 3–5 seconds
Rest: 30–60 seconds between maximal trials
Metric: Peak force, with average force if repeated-trial summary is used
Additional context: Side-to-side difference, dominance, symptoms, confidence and task relevance
Final score: Best trial or average of recorded trials
Key retesting requirement: Same device, contact position, digits included, body position, elbow position, forearm position, wrist position, instructions, contraction duration, rest and scoring method
It means the test focuses on force between the palm and Digits 3–5, which are the middle, ring and little fingers.
No. Thumb–index pinch uses Digit 1 and Digit 2. Palm + Digit 3–5 focuses on palm-to-ulnar-finger force and should be recorded as a separate protocol.
No. Palmar or three-jaw chuck pinch commonly uses the thumb, index and middle finger. Palm + Digit 3–5 uses the palm and the middle, ring and little fingers, so it is a different test.
No. Key pinch usually involves the thumb pressing against the side of the index finger. Palm + Digit 3–5 does not primarily test that thumb–index contact.
It measures maximal palm-to-Digits 3–5 force in the selected setup.
Most published pinch norms report tip pinch, key pinch and palmar pinch. Palm + Digit 3–5 is a more protocol-specific contact pattern, so repeated testing with the same setup is especially important.
A pincher primarily measures peak force during the effort. With Measurz, results can also support side-to-side comparison, repeated-trial comparison, progress tracking and force relative to body mass where appropriate.
No. It can measure force and symptom response, but it does not diagnose a condition or explain symptoms on its own.
Yes, where appropriate. Testing both hands allows right-left and dominant versus non-dominant comparison.
The Pincher Strength Palm + Digit 3–5 Test measures palm-to-middle, ring and little finger force.
It is not the same as standard tip pinch, key pinch or palmar/three-jaw chuck pinch.
Peak force is usually the main routine metric.
Published norms for this exact protocol are limited, so repeated testing with the same setup is especially important.
The strongest comparisons are usually the client’s own baseline, right-left comparison and repeated testing using the same setup.
Measurz should capture hand tested, dominance, digits included, contact position, peak force, symptoms, confidence, compensations and retesting conditions.
Mathiowetz, V., Kashman, N., Volland, G., Weber, K., Dowe, M., & Rogers, S. (1985). Grip and pinch strength: Normative data for adults. Archives of Physical Medicine and Rehabilitation, 66(2), 69–74.
Moussavi, A. A., Saied, A., et al. (2025). Normative values of grip and pinch strength and their anthropometric predictors in healthcare staff. International Orthopaedics. https://doi.org/10.1007/s00264-025-06409-3
Roberts, H. C., Denison, H. J., Martin, H. J., Patel, H. P., Syddall, H., Cooper, C., & Sayer, A. A. (2011). A review of the measurement of grip strength in clinical and epidemiological studies: Towards a standardised approach. Age and Ageing, 40(4), 423–429. https://doi.org/10.1093/ageing/afr051
Werle, S., Goldhahn, J., Drerup, S., Simmen, B. R., Sprott, H., & Herren, D. B. (2009). Age- and gender-specific normative data of grip and pinch strength in a healthy adult Swiss population. The Journal of Hand Surgery, European Volume, 34(1), 76–84. https://doi.org/10.1177/1753193408096763
