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ACL Reconstruction Surgery

Overview of the Procedure

ACL reconstruction surgery is a procedure to replace a torn anterior cruciate ligament (ACL) in the knee with a tissue graft. The ACL is one of the major ligaments in your knee that connects your thighbone (femur) to your shinbone (tibia) and helps stabilize your knee joint. At KLSMC, our orthopaedic surgeons perform this procedure using advanced arthroscopic techniques, which are minimally invasive and promote faster recovery.​

Signs & Diagnosis of an ACL Injury​

Signs & Symptoms of an ACL Injury

Patients with an ACL injury commonly experience:​

  • A sudden “popping” sound or sensation at the time of injury​
  • Rapid swelling within the first few hours​
  • Pain when bearing weight or walking​
  • A feeling that the knee is unstable or giving way​
  • Difficulty fully straightening or bending the knee​
  • Recurring swelling after activity

How Is an ACL Injury Diagnosed?

  • MRI Scan – Confirms the presence and severity of the ACL tear and identifies associated injuries.​
  • X-rays – Performed to rule out fractures or bone injury.​
  • Specialist evaluation is required to determine whether surgical reconstruction is recommended.

Our ACL Reconstruction Surgery Procedure​

Preparation Before ACL Surgery

Before ACL reconstruction surgery, patients are advised to:​

  • Inform the doctor of any medical conditions, medications, or allergies.​
  • Complete required pre-operative tests as instructed.​
  • Follow specific fasting instructions prior to surgery.​
  • Adjust or temporarily stop certain medications if advised.​
  • Arrange for a family member or friend to accompany you on the day of surgery and assist after discharge.

​ What Happens During the ACL Surgery

During ACL reconstruction surgery:​

  • You will be admitted and prepared for the procedure.​
  • The medical team will review your medical history and obtain final consent.​
  • Anaesthesia will be administered to ensure you are comfortable throughout the surgery.​

Once the procedure begins:​

  • The surgeon makes small incisions around the knee.​
  • A tiny camera (arthroscope) is inserted to provide a clear view inside the joint.​
  • The damaged ACL is carefully removed.​
  • Small tunnels are created in the thighbone and shinbone to position the graft.​
  • The selected graft is passed through the tunnels and secured using specialised fixation devices (such as screws).​
  • The graft acts as a scaffold, allowing new ligament tissue to grow and gradually restore knee stability.​

The procedure is performed using minimally invasive arthroscopic techniques, which support precise reconstruction and smaller incisions.

Graft Options

Autograft

In this technique, the surgeon uses tissue from your own body to create the new ACL. Common autograft sources include:
  • Patellar Tendon Graft: Tissue taken from the middle third of the patellar tendon, along with small pieces of bone at each end
  • Hamstring Tendon Graft: Uses portions of the hamstring tendons from the back of the thigh
  • Quadriceps Tendon Graft: Uses the central portion of the quadriceps tendon, sometimes with a small piece of bone from the kneecap

Allograft

This technique uses tissue from a deceased donor that has been carefully screened and processed. Allografts eliminate the need to harvest tissue from your own body, reducing surgical time and post-operative pain at the harvest site.

Synthetic Grafts

Although less common, some synthetic materials or a combination of synthetic and biological tissues may be used in specific situations.

At KLSMC, our surgeons will recommend the most appropriate graft option based on your specific needs, activity level, and medical history.

What Happens After the ACL Reconstruction?

After surgery:​

  • You will be admitted for observation.​
  • Your knee will be bandaged, and a brace or splint may be applied to protect the graft.​
  • Crutches will be provided to assist movement while limiting weight-bearing as advised.​

Pain Management​

  • Pain control is prioritised in the immediate post-operative period.​
  • Prescribed medications will be provided to manage discomfort.​
  • Ice therapy may be recommended to reduce swelling.​

Rehabilitation & Follow-Up​

  • Physiotherapy typically begins the following day to restore range of motion and prevent stiffness.​
  • Follow-up appointments will be scheduled to:​
  • Monitor healing progress​
  • Remove non-dissolving sutures (if applicable)​
  • Adjust your rehabilitation programme as needed​

What Are the Benefits / Risks of ACL Reconstruction?

Benefits:

  • Improved Stability: Restores stability to the knee, reducing the sensation of “giving way”
  • Return to Activities: Allows most patients to return to sports and active lifestyles
  • Prevention of Further Damage: Reduces the risk of additional injuries to the meniscus and cartilage
  • Long-term Joint Protection: May help prevent early onset of arthritis by restoring proper knee mechanics
  • Improved Quality of Life: Enables participation in everyday activities without fear of knee instability

Risks:

  • Infection: Though uncommon, surgical site infections can occur
  • Blood Clots: Deep vein thrombosis is a potential complication of knee surgery
  • Graft Failure: The new ligament can re-tear, particularly if rehabilitation is inadequate
  • Stiffness: Some patients experience limited range of motion after surgery
  • Numbness: Temporary or permanent numbness around the incision sites
  • Persistent Pain: Some patients may have ongoing pain or discomfort
  • Hardware Problems: Rarely, the screws or other devices used to secure the graft may cause irritation

How Long Is the Recovery Period from ACL Reconstruction?

Full recovery from ACL reconstruction typically takes 6-9 months, though individual healing times vary. The recovery journey can be divided into several phases:

  • Phase 1 (1-2 weeks): Focus on controlling swelling, regaining range of motion, and protecting the graft. You’ll use crutches and a brace during this phase.
  • Phase 2 (2-6 weeks): Gradually increasing range of motion and beginning basic strengthening exercises. Most patients transition away from crutches during this phase.
  • Phase 3 (6-12 weeks): Progressive strengthening with emphasis on regaining normal walking pattern and improving single-leg stability.
  • Phase 4 (3-6 months): Advanced strengthening, beginning sport-specific training, and functional exercises.
  • Phase 5 (6-9 months): Return to sport activities after passing functional tests and receiving clearance from your surgeon.

At KLSMC, our sports medicine specialists and physical therapists work closely together to customize your rehabilitation program based on your specific needs and goals.

What Can You Do to Help Recovery After ACL Reconstruction?

  1. Follow Rehabilitation Protocol: Adhere to your prescribed physical therapy program, which is crucial for optimal recovery
  2. Manage Swelling: Use ice therapy and elevation as recommended to control swelling
  3. Wear Your Brace: Use the knee brace as instructed by your surgeon
  4. Gradual Progression: Avoid rushing the recovery process or skipping phases of rehabilitation
  5. Maintain a Healthy Diet: Proper nutrition supports tissue healing and recovery
  6. Stay Hydrated: Adequate hydration is essential for tissue repair
  7. Monitor for Complications: Report any unusual symptoms such as excessive pain, swelling, or warmth to your healthcare provider
  8. Be Patient: Understand that healing occurs gradually, and following the recommended timeline reduces re-injury risk
  9. Maintain Overall Fitness: Work on maintaining cardiovascular fitness with approved activities that don’t stress the knee
  10. Mental Preparation: Maintain a positive mindset and set realistic expectations for recovery milestones

Next Steps

If you’ve suffered a knee injury and suspect an ACL tear, or if you’ve been diagnosed and are considering surgical options, here’s how to proceed at KLSMC:

  1. Schedule a Consultation: Contact our appointment line at +603-2096 1033 or book through our website to arrange an evaluation with one of our orthopaedic specialists.
  2. Prepare for Your Visit:
    a. Bring any previous imaging studies (X-rays, MRIs) and medical records
    b. Make a list of medications you’re currently taking
    c. Note all symptoms and how the injury occurred
    d. Prepare questions about the procedure, recovery, and return to activities
  3. Assessment Process: Your initial consultation will include a thorough physical examination and review of your medical history. If not already completed, diagnostic imaging such as an MRI may be ordered to confirm the diagnosis and assess for additional injuries.
  4. Pre-Surgical Planning: If ACL reconstruction is recommended, our team will discuss graft options, surgical approach, and set realistic expectations for recovery and return to activities.
  5. Financial Considerations: Our patient care coordinators can provide information about procedure costs, insurance coverage, and payment options.

Taking the first step toward ACL reconstruction at KLSMC puts you on the path to reclaiming an active lifestyle with a stable knee. Our experienced surgical team and comprehensive rehabilitation program are designed to guide you through every stage of recovery.

FAQ

Common symptoms include a popping sound at the time of injury, rapid swelling, pain, instability, or a feeling of the knee “giving way” during movement. However, a proper diagnosis requires evaluation by an orthopaedic specialist, typically including an MRI scan to confirm the tear and check for associated injuries.

Yes, most patients will need to wear a knee brace for protection during the initial recovery period. The type of brace and duration of use varies depending on your specific procedure and surgeon preference. Some patients may also benefit from a functional ACL brace when returning to sports activities.
Return to sports typically occurs between 9- 12 months after surgery, depending on individual recovery progress. Before returning to full sports participation, you must meet specific criteria including: full range of motion, adequate strength (compared to the uninjured leg), successful completion of functional testing, and clearance from your surgeon.
Yes, most patients will use crutches for the first 6 weeks after surgery. Your surgeon will provide specific instructions about weight-bearing status and when you can transition away from crutches based on your individual recovery progress.
Completing the full rehabilitation program is essential. Additional preventive measures include: participating in neuromuscular training programs, proper warm-up before activities, maintaining good overall fitness and muscle strength, using proper technique during sports movements, and possibly wearing a functional knee brace during high-risk activities
  • Bearing full weight on the operated leg unless instructed by your surgeon.​
  • Removing your knee brace or support without medical advice.​
  • High-impact activities such as running, jumping, pivoting, or contact sports.​
  • Twisting or sudden directional movements that may strain the graft.​
  • Skipping prescribed physiotherapy sessions.​
  • Driving until cleared by your doctor.​
  • Soaking the surgical wound (e.g., swimming, baths) until fully healed.​
  • Ignoring signs of complications such as increasing pain, swelling, redness, fever, or wound discharge.
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KLSMC is a specialist hospital based in Kuala Lumpur, Malaysia, with a strong focus on orthopaedics, regenerative treatments, and physiotherapy rehabilitation. Our dedicated team of medical professionals is committed to helping patients regain mobility and enhance their quality of life through personalised and evidence-informed care.