09/04/2026
Quite a lot of bruising can be completely normal after an Anterior Cruciate Ligament reconstruction (ACL reconstruction). Do not be too alarmed.
Several things during surgery can lead to extensive bruising (ecchymosis):
1. Surgical bleeding
• Small blood vessels are cut during the procedure.
• Blood can track down the leg due to gravity.
2. Graft harvesting
• If a Patellar tendon or Hamstring tendon graft is used, the tissue harvesting itself causes additional trauma and bleeding.
3. Fluid movement after surgery
• Post-operative swelling can push blood into surrounding tissues.
4. Gravity
• Bruising often moves down the leg over days.
• It’s common to see bruising around the **shin, calf, or even ankle.
Typical timeline
• Days 2–5: Bruising usually becomes more visible.
• Week 1–2: Can look quite dramatic (dark purple/yellow).
• Weeks 2–4: Gradually fades.
Normal bruising can be:
• Large or spreading
• Dark purple/blue/yellow
• Slightly tender
• Moving downward along the leg
Red flags 🚩
Contact a clinician if you see:
• Rapidly increasing swelling or tightness
• Severe calf pain (possible Deep Vein Thrombosis)
• Redness, warmth, or fever (possible Postoperative infection)
• Bruising that keeps expanding significantly after ~1–2 weeks
Practical tips
• Elevation helps limit spread
• Compression (if prescribed)
• Ice around the knee (not directly on deep bruising)
• Gentle movement as guided in rehab