The upper limb is a mobile, sensory and highly adaptable system. It positions the hand, produces force, manipulates objects, protects the body and communicates non-verbally. Its success is measured not only by range or strength but by whether a person can wash, dress, eat, work, use a phone, care for family and participate in community life.
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From body structure to participation
The ICF approach links body structures/functions to activities and participation. A shoulder restriction is an impairment; difficulty putting on a shirt is an activity limitation; inability to return to a job or caregiving role is a participation restriction. Physiotherapy assessment should connect all three to the patient’s goals and environment.
Learning outcomes
- Describe the main functions of the upper limb and the systems that support them.
- Analyse reaching, grasping, manipulation, lifting, pushing and protective reactions.
- Relate upper-limb movement requirements to basic and instrumental activities of daily living.
- Identify how pain, weakness, stiffness, sensory loss, poor coordination and environmental barriers affect function.
- Set functional goals and select meaningful assessment and rehabilitation activities.
1. Core functions of the upper limb
| Function | What it involves | Example |
|---|---|---|
| Positioning/reaching | Scapular control, shoulder elevation/rotation, elbow extension and forearm orientation. | Reaching a shelf, hanging clothes or greeting someone. |
| Grasping | Hand shaping, thumb opposition, finger flexion, wrist stability and sensory feedback. | Holding a cup, walking aid or cooking utensil. |
| Precision manipulation | Fine thumb/finger control, intrinsic muscles, visual guidance and tactile discrimination. | Buttoning, writing, tying laces or using a phone. |
| Power production | Proximal stability, shoulder/elbow extension, wrist positioning and grip force. | Lifting a basin, pushing a door or transferring from a chair. |
| Support/weight-bearing | Closed-chain shoulder, elbow, wrist and hand control with trunk integration. | Using crutches, pushing up from bed or protecting a fall. |
| Protection | Rapid extension or flexion and sensory detection of danger. | Bracing during a loss of balance or withdrawing from heat. |
| Communication | Gestures, sign language, writing, pointing and facial/arm expression. | Signing, waving, indicating pain or giving directions. |
| Exploration/sensation | Touch, pressure, vibration, temperature and proprioception. | Identifying an object in a pocket or judging grip force. |
2. Functional movement chain
Upper-limb function depends on a proximal-to-distal chain. The trunk provides a base; the scapula positions the glenoid; the humerus reaches; the elbow adjusts distance; the forearm rotates; the wrist aligns the hand; the thumb and fingers interact with the object.
- Anticipatory postural control: trunk and scapula prepare before the hand moves.
- Reach: shoulder and elbow extend toward the target while vision guides direction.
- Pre-shaping: wrist and digits open to match the object’s size, shape and orientation.
- Contact and grip: tactile/proprioceptive feedback adjusts finger force and thumb opposition.
- Manipulation: wrist, thumb and digits move the object; proximal joints stabilise.
- Release: extensor and intrinsic control opens the hand at the intended location.
- Return/recovery: muscles eccentrically control the limb back to a resting position.
3. Activities of daily living
Basic ADLs are personal self-care activities; instrumental ADLs support independent living in the home and community. The exact task and cultural meaning vary, so ask the patient what matters rather than assuming a standard routine.
| Activity | Upper-limb requirements | Common limiting impairment |
|---|---|---|
| Eating and drinking | Reach, elbow flexion, forearm supination/pronation, wrist stability, grip and hand-to-mouth control. | Shoulder pain, tremor, weakness, sensory loss or poor coordination. |
| Bathing and washing | Shoulder elevation/rotation, elbow flexion, hand opening, grip and bilateral coordination. | Limited overhead reach, pain, reduced endurance or unsafe balance. |
| Grooming | Reach to face/head, sustained grip and fine manipulation. | Restricted shoulder rotation, hand stiffness or fatigue. |
| Dressing | Reach behind back/head, bilateral hand use, pinch, pull and sequence. | Shoulder stiffness, weakness, neglect, pain or reduced sensation. |
| Toileting | Trunk/hip positioning plus hand reach, clothing management and hygiene. | Limited shoulder rotation, balance, pain or poor dexterity. |
| Bed/chair transfers | Weight-bearing through arms, elbow extension, wrist/hand stability and protective reactions. | Weak triceps, painful wrist/shoulder, poor coordination or precautions. |
| Using a phone | Thumb opposition, finger isolation, sustained grip and visual-motor control. | Median/ulnar dysfunction, tremor or sensory loss. |
| Cooking | Reach, lift, pour, grip, bilateral stabilisation and heat protection. | Weakness, reduced sensation, limited endurance or unsafe release. |
| Carrying water/loads | Scapular depression, elbow extension, wrist neutral and power grip. | Pain, reduced grip, nerve injury or poor postural control. |
| Work/school tasks | Task-specific speed, precision, endurance and cognitive-motor planning. | Repetitive strain, fatigue, reduced dexterity or environmental barriers. |
4. Grasp patterns
| Pattern | Description | Example | Key requirements |
|---|---|---|---|
| Power grip | Object held against palm with flexed fingers and thumb. | Holding a hoe handle or bucket. | Wrist stability, finger flexors, thumb adduction/opposition and sensation. |
| Cylindrical grip | Fingers wrap around a cylinder. | Holding a bottle. | Grip strength and appropriate object diameter. |
| Spherical grip | Digits spread around a round object. | Holding a ball. | Finger abduction, thumb opposition and hand span. |
| Tip-to-tip pinch | Thumb tip meets another fingertip. | Picking up a bead. | Precision, sensation and intrinsic control. |
| Pad-to-pad pinch | Finger pad contacts thumb pad. | Turning a small page. | Thumb opposition and stable IP/MCP control. |
| Key pinch | Thumb pad presses against lateral index finger. | Holding a key or card. | Adductor pollicis, first dorsal interosseous and sensory feedback. |
| Tripod pinch | Thumb with index/middle fingers. | Writing with a pen. | Thumb opposition, wrist stability and graded force. |
| Hook grip | Fingers flex without thumb. | Carrying a bag handle. | FDP/FDS strength and protected wrist position. |
5. Functional range and movement combinations
Daily tasks use combinations rather than isolated movements. The required range varies with body size, object location and technique; a patient may complete a task through compensation even when a joint is restricted.
| Task | Typical movement combination | Observe for compensation |
|---|---|---|
| Hand to mouth | Shoulder flexion, elbow flexion, forearm supination, wrist extension and grip. | Trunk flexion, shoulder hiking or excessive wrist motion. |
| Hand to back of head | Shoulder abduction/external rotation, elbow flexion and forearm control. | Neck flexion, trunk rotation or scapular winging. |
| Hand behind back | Shoulder extension/internal rotation, elbow flexion and wrist positioning. | Trunk rotation or pelvic tilt. |
| Push up from chair | Shoulder extension/adduction, elbow extension, wrist extension and hand loading. | Unequal weight shift, painful wrist or trunk thrust. |
| Reach overhead | Scapular upward rotation, clavicular rotation, shoulder elevation and elbow extension. | Shoulder shrug, lumbar extension or rib flare. |
| Open a jar | One hand stabilises; other pronates/supinates with wrist and grip torque. | Excessive shoulder movement, pain or dropping object. |
6. Assessment of upper-limb function
- Activity interview: ask what the person needs and wants to do, where, how often and with whom.
- Observation: assess reaching, grasp, release, bilateral use, speed, accuracy, fatigue, pain and safety.
- Body-function measures: range, strength, tone, coordination, sensation, swelling, pain and endurance.
- Task-specific tests: timed dressing, reach-and-grasp, peg/coin tasks, supported weight-bearing or patient-selected activity.
- Patient-reported tools: use validated instruments appropriate to training and setting, such as region-specific disability or upper-limb function questionnaires.
- ICF documentation: separate impairment, activity capacity, activity performance, participation and environmental barriers.
7. Rehabilitation planning
| Problem | Possible intervention focus | Example goal |
|---|---|---|
| Painful shoulder reach | Education, graded range, scapular control, load modification and functional practice. | Reach a shelf at shoulder height to place a light cup with pain ≤3/10. |
| Weak grip after nerve injury | Protective positioning, sensory re-education, tendon glide and graded grasp. | Hold a phone for five minutes without dropping it. |
| Stiff hand after fracture | Oedema control, active range, joint protection and task practice. | Fasten three buttons using the affected hand as an assist. |
| Hemiparetic upper limb | Task-specific bilateral practice, weight-bearing, selective movement and environmental adaptation. | Use the affected hand to stabilise a bowl during a meal. |
| Reduced endurance | Pacing, interval practice, proximal strengthening and energy conservation. | Prepare a simple meal with planned rest and safe handling. |
8. Environmental and cultural factors
- Consider cooking methods, water containers, farming tools, school/work tasks, caregiving and transport relevant to the person’s life.
- Adapt handle size, object weight, height, seating, lighting and surface before assuming the person needs more muscle strength.
- Respect handedness, customary greetings, clothing, privacy and family roles.
- Teach safe compensations while continuing to restore the affected limb; do not create unnecessary dependence.
- Include family or caregivers only with consent and teach them how to support, not replace, the patient’s effort.
Clinical scenario: returning to work
A market vendor with wrist pain can lift a light cup but cannot pour a jerrycan or count coins rapidly. Analyse the different demands: load, grip diameter, forearm rotation, repetition, precision, rest and environment. Build a graded plan around meaningful tasks, modify the load and work height, teach pacing and monitor symptoms. A strength score alone would miss the participation problem.
9. Examination points and revision questions
High-yield points
- Upper-limb function requires proximal stability, distal mobility, vision, sensation and motor planning.
- Power grip, precision pinch and weight-bearing use different combinations of muscles and joints.
- ADL assessment should identify what the patient can do in a real context, not only isolated range or strength.
- ICF links body impairment to activity and participation while considering environmental factors.
- Functional goals should be specific, meaningful, measurable and linked to the patient’s life.
- List eight functions of the upper limb.
- Explain the proximal-to-distal movement chain during reach and grasp.
- Compare power grip, tripod pinch, key pinch and hook grip.
- Analyse the upper-limb requirements of eating, dressing and pushing from a chair.
- Describe how pain, weakness, stiffness and sensory loss affect ADLs.
- Write two impairment goals and two activity/participation goals for an upper-limb patient.
- Explain how culture and environment should influence functional assessment.
References for further study
- WHO: ICF beginners guide
- WHO: Rehabilitation
- ICF activity and participation in rehabilitation
- OpenStax: Upper-limb muscles
Educational note: Functional rehabilitation should be person-centred, culturally respectful and coordinated with the wider rehabilitation team.