Primary Focus
Conservative Path
Symptom management, quad strength, offloading
Interventional Path
Structural correction, joint resurfacing or repair
Treatments
ACL Reconstruction
Surgical replacement of a torn Anterior Cruciate Ligament using a tendon graft to restore knee stability.
On this page
Overview
ACL reconstruction is performed to address persistent knee instability following a ligament tear. This page explains graft options, the surgical process, and recovery stages.
ACL reconstruction is a surgical procedure where a ruptured Anterior Cruciate Ligament is replaced with a graft, typically harvested from the patient's own hamstring, patellar, or quadriceps tendon. The graft is secured in bone tunnels drilled into the femur and tibia. Wording is cautious: surgery is not always required, and success depends heavily on structured postoperative rehabilitation.
This information is for general patient education and does not replace an individual clinical assessment. Suitability and outcomes depend on joint condition and physical health.
Clinical Overview Illustration
What does this treatment involve?
Typical clinical stages of this treatment pathway include:
1Preoperative checks, general anaesthetic, and surgical preparation
2Harvesting the chosen tendon graft through a small incision
3Using keyhole arthroscopy to clear the damaged ACL remnants
4Drilling precise bone tunnels in the tibia and femur at the anatomical ACL attachment sites
5Pulling the tendon graft through the tunnels and securing it with specialized screws or buttons
6Closing wounds, applying dressings, and placing a cooling wrap or brace
Suitability
Suitability depends entirely on an individual clinical examination, diagnostic imaging, medical history, and personal activity goals.
Who may benefit?
- Patients experiencing recurrent episodes of the knee giving way or instability
- Athletes wishing to return to pivoting or contact sports (football, rugby, netball)
- Individuals with multi-ligament injuries or associated repairable meniscus tears
When might it not be suitable?
- Patients with stable, asymptomatic ACL tears who do not participate in pivoting sports
- Advanced knee osteoarthritis where ligament reconstruction will not resolve the primary pain
- Individuals unable to commit to a rigorous 9-to-12-month rehabilitation program
Alternatives
Alternative treatment pathways that may be considered depending on clinical severity:
Intensive physical therapy focusing on hamstring and core strengthExplore Option >
Functional knee bracing for stability during activitiesExplore Option >
Activity modification (avoiding pivoting sports)Explore Option >
Risks
As with any clinical intervention, risks and complications differ between patients. Suitability and risk profiles are discussed in detail during consultation. General risks associated with this procedure include:
Graft failure or rupture, requiring revision surgery
Persistent joint stiffness (arthrofibrosis) or loss of terminal extension
Knee pain, particularly around the graft harvest site (e.g. kneecap pain)
Deep vein thrombosis (DVT) or infection
Recovery & Rehabilitation
Post-treatment rehabilitation and timelines are key to restoring joint health. We do not provide guaranteed recovery times.
Immediate Recovery
- Crutches are typically used for 1 to 2 weeks; weight-bearing is allowed as pain tolerates
- Return to desk work in 2-3 weeks; light driving in 3-4 weeks once muscle control is restored
- Full return to pivoting sports requires 9 to 12 months of progressive rehabilitation
Rehabilitation Pathway
- Early phase (0-6 weeks): restoring full knee extension and control of the quadriceps
- Mid phase (6 weeks - 6 months): progressive strength training, balance, and straight-line jogging
- Late phase (6-12 months): sport-specific agility drills, landing mechanics, and testing for return-to-sport clearance
Rehabilitation Milestones
ACL Reconstruction Recovery Timeline
Typical phase-based progression and return to functional activity guidelines.
1
Phase 1 (Weeks 1-2)
Initial Mobility & Healing
Primary Focus:Control swelling, achieve full extension, activate key stabilizing muscles.
- Use crutches or support frame for safety
- Perform gentle range of motion exercises (0-90° flexion)
- Regular elevation and icing to manage inflammatory response
Weight BearingWeight-bearing as tolerated with aids
Driving StatusNot permitted
2
Phase 2 (Weeks 3-6)
Gait Normalisation & Range
Primary Focus:Restore normal walking gait, progress knee bending beyond 90°, and increase standing load.
- Gradually wean off walking aids as gait stabilizes
- Introduce closed-chain exercises (squats, calf raises)
- Increase active movement and daily walking distances
Weight BearingFull weight-bearing
Driving StatusPermitted once emergency stop is safe (approx. 6 weeks)
3
Phase 3 (Weeks 6-12+)
Strengthening & Functional Return
Primary Focus:Restore leg strength, balance, and return to light work/recreation.
- Progress resistance training (leg press, cycling)
- Incorporate balance and coordination drills
- Gradual return to work, driving, and low-impact activity
Weight BearingUnrestricted
Driving StatusPermitted
Important Clinical AdviceRecovery timelines are indicative. Individual rehabilitation progression depends on surgical findings, tissue quality, and the specific guidance of your consultant orthopaedic surgeon and physiotherapist.
Surgical Recovery Resources
As this is a surgical procedure, you may find our recovery resources helpful. These explain how to prepare and what to expect:
Clinical Pathway Map
Staged treatment and recovery journey.
Staged Clinical Pathway
Phased Rehabilitation & Recovery Pathway
Patient Education Pathway: This pathway diagram is for patient educational purposes only. It is not a diagnostic, triage, or clinical decision-making tool. Individual care options are determined dynamically following consultation.
Anatomy Comparison
Management Strategy Comparison
Comparing conservative treatment with active intervention options.
Conservative Path
Conservative PathClinical Reference
Conservative PathClinical ReferenceInterventional Path (Intervention Options)
Interventional PathClinical Reference
Interventional PathClinical ReferenceTimeframe
Conservative Path
Gradual ongoing adaptation over 3-6 months
Interventional Path
Structured acute healing followed by targeted rehab
Expected Outcome
Conservative Path
Improved function and pain control, preserved anatomy
Interventional Path
Restored mechanical stability, reconstructed tissue
| Anatomical Feature | Conservative Path | Interventional Path |
|---|---|---|
| Primary Focus | Symptom management, quad strength, offloading | Structural correction, joint resurfacing or repair |
| Timeframe | Gradual ongoing adaptation over 3-6 months | Structured acute healing followed by targeted rehab |
| Expected Outcome | Improved function and pain control, preserved anatomy | Restored mechanical stability, reconstructed tissue |
Frequently Asked Questions
No. Many patients, especially those who do not play pivoting sports, achieve excellent knee stability and function through high-quality physical therapy alone.
The choice between hamstring, patellar, or quadriceps tendon grafts depends on your age, sport, anatomy, and physical demands, and is decided during consultation.
Awaiting Clinical Review
This page is in draft and has not yet been formally reviewed by our clinical team. Content may change following clinical review.
Would you like to discuss your treatment options?
A consultation can help clarify the cause of your symptoms and discuss appropriate treatment options.
Face-to-face appointments are arranged through the reception team at the chosen clinic. Video consultations use Google Calendar where available.
Continue Your Knee Journey
Explore Recovery→Next Step: Recovery & Rehabilitation
Understand recovery milestones, physical therapy timelines, and guidelines for returning to daily activities, driving, work, or sports safely.
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Medical Disclaimer
This website provides educational and general information about knee symptoms, conditions, and treatments. The content is for informational purposes only and does not constitute medical advice, diagnosis, or a treatment plan. It should not be used as a substitute for a professional consultation, examination, or clinical decision-making by a qualified orthopaedic specialist.
If you are experiencing symptoms or are concerned about a knee problem, please arrange a clinical consultation. If you have urgent symptoms, severe pain, or are unable to put weight on your leg, please read our urgent advice guidance or contact emergency services immediately (dial 999 or NHS 111).