It usually happens in a moment: you plant your foot to turn while fielding or dribbling, feel a "pop" inside the knee and fall. Within a few hours the knee balloons up. Two weeks later the swelling settles, but the knee "gives way" when you turn.
That is the typical story of an anterior cruciate ligament (ACL) tear.
What does the ACL do?
The ACL is a strong band inside the knee that stops the shin bone from sliding forward and rotating. Without it, the knee is unstable during twisting and pivoting — exactly the movements of cricket, football, badminton, kabaddi and basketball.
Do you always need surgery?
No — but often yes for active people. The decision depends on:
- Your activity level — do you want to return to pivoting sports?
- Instability — does the knee give way in daily life?
- Associated injuries — a torn meniscus or cartilage damage changes the plan
- Age and occupation — police, army and sports aspirants usually need a stable knee
People who are less active and do not have giving-way episodes can do well with a structured strengthening programme.
Why not just "wait and see"?
An unstable knee keeps slipping. Each episode can tear the meniscus or damage cartilage, leading to early arthritis. That is why we don't recommend returning to sport on an ACL-deficient knee.
What ACL reconstruction involves
The torn ligament is replaced with a graft — usually your own hamstring tendons — through keyhole (arthroscopic) surgery. Most patients:
- Walk with a brace and support the next day
- Go home in 24 hours
- Return to desk work in 1–2 weeks
- Start jogging at 3–4 months
- Return to sport at 6–9 months after passing strength and hop tests
Prevention for weekend players
- Warm up for 10 minutes before playing — never start cold
- Strengthen hamstrings and hips (Nordic curls, side planks)
- Practise landing with knees bent and over the toes
- Wear proper sports shoes, not running shoes, on turf
The surgery takes an hour. The rehab takes months — and it is the rehab that gets you back on the field.
