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ACL surgery · Months 3 to 6

ACL Surgery Recovery, 3 to 6 Months: Running, What’s Normal

Your PT says a treadmill jog might be next. Your first thought isn’t running. It’s whether that means you can climb the ladder at work.

Around month 3 is when the first jog usually comes up, as a time to ask, not a green light. A jog tests straight-line impact, not ladders or twisting, and one NHS leaflet says to avoid twisting and kneeling for the first 4 to 6 months.

What’s normal now

  • Month 3 is when the jog usually comes up. It’s a time to ask, not a green light. Source
  • A good jog says your knee can take straight-line impact. Ask your PT which test stands for each job you do. Source
  • One NHS leaflet says to avoid twisting and kneeling for the first 4 to 6 months. Source
  • With very heavy duties, or work needing agility on uneven ground, full duty may take 4 months or more. Source
  • Kneeling puts pressure on the most-operated-on patch of your knee. Expect it to lag. Source

What usually comes next

  • In one hospital program, week 1 of running is walk 5 minutes, jog 1 minute, done 5 times. Source
  • That program says to progress only if there’s no pain or swelling during or after the run. Source
  • Later, one US hospital protocol needs hop tests at 90% or more to start its return-to-sport phase. Source

Questions to bring to your surgeon or PT

  1. Which test clears me to jog, and which test stands for ladders? Source
  2. Which tests have I passed, and am I OK to start a run-walk? Source
  3. Can you show me the swipe test to check my swelling after runs? Source
  4. Am I cleared to kneel, and from when? Source

Don’t wait for your next visit

  • A loud pop or popping feeling, then the knee gives out, swells fast or loses motion. Source
  • A knee that locks, gives way, clicks painfully, or can’t take your weight. Source
  • A knee that is badly swollen or has changed shape. Source
  • A fever or chills with redness or heat around the knee. Source
  • Pain or swelling in one calf or thigh. A clot can show up weeks after surgery; with chest pain or shortness of breath, call 911. Source

Chest pain or trouble breathing: call 911.

Questions men ask at this stage

When can you start running after ACL surgery?
Patient guides cluster around month 3. New Zealand’s ACL registry says jogging comes after 3 months in general terms. Source
If I can jog after ACL surgery, can I climb ladders?
Not necessarily. A jog is straight-line running on flat ground. Ladders, step-downs, uneven ground and pivoting ask for single-leg control, landing and twisting. Source
What if my knee hurts or swells after a run?
One review’s rule: if pain goes up or swelling is more than a trace, stop running for 2 days, cross-train, then restart one step back. Source

Read next for this stage

Education only, not medical advice. Your surgeon’s plan comes first. Every point on this page comes from an After the Scope guide; each “Source” link opens the guide with its full references.