Still sore after several days

What this tends to look like

• Still tender, stiff, or limping several days after the original event
• Either no improvement at all, or improvement that stalled and then reversed
• Sometimes a swelling that has not gone down, or a new swelling appearing
• Occasionally worse after any activity, and briefly better after rest
• May have started to shift weight away from the area, changing how they stand
• Sometimes visible loss of muscle on one side compared with the other

What is usually going on

Soft tissue bruising has a predictable course: worst in the first two days, clearly better by day four, largely resolved by a week. When that does not happen, the original assumption was wrong. The usual explanations are a fracture that was missed because the animal was still walking, a ligament injury such as a partial cruciate tear, a joint that was destabilized, a foreign body such as a grass seed working its way in, or an infection seeded at the time.

The pattern of stalling and reversing is particularly worth taking seriously, because it is the signature of an unstable joint. A partially torn cruciate ligament improves with rest, which reads as recovery, and then fails completely once normal activity resumes. Catching it while it is partial changes the options meaningfully, and roughly half of dogs that tear one go on to tear the other.

There is also a quieter point about pain. Animals that have been sore for a week have usually been compensating for a week, which is how a leg injury becomes a back problem and how muscle wastes on one side. Getting a diagnosis at this stage is not only about the original injury. It is about stopping the second-order damage that follows weeks of moving badly.

What people commonly use

Educational information only — not veterinary advice. Check with your vet before starting anything new.

What you can do at home

• Book the appointment. At this stage an examination and probably imaging is the useful next step
• Keep them rested until then rather than testing whether they can manage a normal walk
• Write down the timeline: when it happened, what they did, what improved, and when it stopped improving
• Film them walking away and back on a hard flat floor. Subtle lameness is far easier to see on video
• Compare the two sides for swelling, heat, and muscle bulk, and mention any difference
• Do not add human painkillers while you wait. Ask about proper pain relief instead

What progress should look like

How long to give this before you conclude it is not working.

• This weekGet seen. Several days of unresolved soreness has already ruled out simple bruising.
• At the visitAsk specifically about imaging, and about a partial cruciate tear if it is a hind leg in a dog.
• Two to six weeksRealistic recovery for a diagnosed soft tissue injury with proper rest and a plan.
• If nothing is foundAsk about a recheck in two weeks. Some injuries and foreign bodies only become apparent with time.

When to stop and call your vet

• Any leg that stops taking weight altogether
• Swelling that is growing, or heat over a joint
• Visible muscle loss on one side
• Pain severe enough to disturb sleep or stop them settling