Activity Modification for Arm Injuries

Tissues need load to stay healthy

A tendon completely rested for six weeks loses meaningful strength and stiffness. When you eventually return to activity, the tendon is weaker and more likely to re-injure.

Tissues also need rest from excessive load

Repeated overload with no chance to recover causes microscopic damage to accumulate faster than the body can repair it. Pain persists and can become chronic.

1. Identify the aggravating activity

Spend a week paying close attention. Which movements reproduce pain? What tasks leave you aching that evening or the next morning? Which positions wake you at night? A short symptom diary usually reveals the pattern.

2. Reduce the dose, not the activity

Reduce volume, intensity, frequency or duration to a level the injured tissue can handle. Keep the pattern of movement, but shrink it.

Pain to respect

• Sharp, stabbing, electric or shooting pain.
• Pain at rest or at night, especially if waking you.
• Pain with swelling, redness or warmth.
• Pain that worsens session-on-session.
• Sudden weakness, loss of function, pins, needles or numbness.

Pain to work through — within reason

• Dull ache up to 4/10 during loaded exercise.
• Discomfort that eases as the tissue warms up.
• Stiffness that improves with gentle movement.
• Mild residual ache that settles within 24 hours.
• Familiar discomfort that improves week-on-week.

Rotator cuff tendinopathy and shoulder impingement

• Avoid sustained overhead work; break it into 5-minute blocks.
• Keep elbows below shoulder height during weight training.
• Sleep on the unaffected side, hugging a pillow with the painful arm.
• Use “9 and 3” steering wheel position, not “10 and 2”.
• Replace upright rows with face pulls and avoid behind-the-neck exercises.

Frozen shoulder

• Maintain pain-free range with small, frequent movements.
• Avoid sudden grabs or reaching behind the body.
• Dress by sliding the affected arm in first and out last.
• Use heat before, ice after and gentle daily mobility.
• Do not force stretching pain.

Tennis elbow

• Reduce gripping intensity with ergonomic handles and padded grips.
• Lift with the palm facing up rather than down.
• Use a counterforce brace during work or sport.
• Check tennis grip size and string tension.
• Consider a vertical mouse and split keyboard if work-related.

Golfer’s elbow

• Avoid sustained heavy gripping and repetitive wrist flexion.
• Address golf grip pressure and technique with a coach.
• Use neutral-grip or supinated pulls instead of pronated pulls.
• Temporarily substitute heavy deadlifts with lighter trap-bar variations.

Carpal tunnel syndrome

• Wear a neutral wrist splint at night.
• Float the hands while typing; never rest wrists on the desk edge.
• Use a vertical or contoured mouse.
• Take micro-breaks every 20-30 minutes.
• Avoid prolonged vibration or pressure without padded gloves.

De Quervain’s tenosynovitis

• Lift babies with both hands under the trunk, not extended thumbs.
• Use a thumb spica splint during aggravating activities.
• Alternate thumbs and use voice dictation on phones.
• Replace pinch grip with whole-hand grip.
• Wring cloths with two hands rather than twisting one-handed.

Trigger finger / thumb

• Avoid prolonged forceful gripping.
• Use padded gloves or grip sleeves on tools.
• Consider a night splint to keep the digit straight.
• Reduce palm-compressing activities such as long cycling or heavy secateur use.

Thumb base arthritis

• Replace pinch grip with whole-hand power grip.
• Use jar openers, electric tin openers and lever-style handles.
• Avoid wringing wet cloths or twisting tight lids by hand.
• Use a thumb spica brace for flares and prolonged tasks.

Doing nothing for weeks, then everything in a day

Complete rest weakens tissue. Reintroduce load early and gradually.

Over-relying on splints and braces

Splints protect when used during aggravating activities or at night. Worn constantly for months, they can cause stiffness and weakness.

Assuming pain medication means it is fixed

Medication can mask pain that would otherwise tell you to slow down. The tissue may still be healing.

Asking the wrong question

Instead of asking “When can I get back to normal?”, ask “What can I do today that gets me closer to normal without setting me back?”

Week 1 — Identify and reduce

• Symptom diary identifies mouse use and heavy gym press as triggers.
• Mouse swapped for a vertical mouse with micro-breaks every 25 minutes.
• Heavy pressing replaced with lower-body strength work and floor presses.
• Counterforce strap used during the working day.

Weeks 2-4 — Load and progress

• Loaded eccentric exercises begin three times weekly.
• Pain during exercise stays around 3/10.
• Mouse work tolerable up to 30 minutes before breaks.
• Cardio and lower-body training continue.

Weeks 4-8 — Rebuild

• Exercises increase by around 10% weekly.
• Light upper-body pressing returns with neutral grip.
• Counterforce strap is gradually weaned.
• Daily symptoms become intermittent and mild.

Weeks 8-12 — Return

• Full gym programme returns with attention to grip and elbow position.
• Tennis is reintroduced with coaching on grip and mechanics.
• Symptoms resolve at rest and during normal work.
• Maintenance routine continues.