An anterior cruciate ligament (ACL) tear is a significant knee injury that affects stability, confidence and tolerance to load. Whether managed surgically or non-surgically, people returning to work often notice stiffness, fatigue or discomfort with prolonged sitting, standing or walking.

At work, symptoms are influenced by how long the knee is held in one position, how evenly weight is distributed, and how frequently movement is built into the day. Understanding these factors helps support comfort and a smoother return to daily work activities.

How an ACL tear affects comfort at work

After an ACL injury, the knee and surrounding muscles are often sensitive to both static positions and sudden changes in load.

Common workplace challenges include:

• Prolonged sitting with the knee bent
Long periods at a desk can lead to stiffness and discomfort when standing or walking again.

• Low or cramped seating
Deep knee bending increases joint stress and can feel uncomfortable, particularly in early recovery.

• Prolonged standing
Sustained weight-bearing can lead to fatigue or a feeling of instability in the knee.

• Reduced movement confidence
Many people instinctively move less after an ACL injury, which can increase stiffness and slow functional recovery.

These factors can cause knee discomfort or fatigue to build gradually through the working day.

How to support comfort and confidence at work

After an ACL tear, the aim is to manage load carefully, avoid prolonged positions, and use regular, controlled movement.

1. Optimise seating height and space

Use a chair that allows the knee to sit at a comfortable angle, avoiding deep flexion.
Ensure there is enough leg room to change position easily.

2. Break up prolonged sitting

Stand up, walk briefly or gently straighten the knee every 20–30 minutes.
Short, frequent movement breaks reduce stiffness more effectively than long breaks.

3. Stand with symmetry

When standing, distribute weight evenly between both legs rather than favouring one side.
Avoid locking the knees.

4. Use gentle, comfortable movement

Light movement helps reduce stiffness and maintain confidence, such as:

• Short walks at a relaxed pace
• Standing knee straightening within comfort
• Changing sitting position rather than staying fixed

Movement should feel controlled and never forced.

5. Reduce unnecessary knee strain

Keep frequently used items within easy reach to avoid repeated squatting or twisting.
Use lifts or handrails where available, especially during early return to work.

Final thoughts

An ACL tear can have ongoing effects on knee comfort and confidence at work, even as recovery progresses. Supportive seating, regular gentle movement and balanced weight-bearing can make a significant difference to day-to-day comfort. Small, consistent adjustments help people work more comfortably and sustainably while the knee continues to recover.

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