At a glance
ACL reconstruction is a surgical procedure that replaces a torn anterior cruciate ligament (ACL), one of the four major ligaments that hold the knee together and keep it stable during movement.
The ACL runs diagonally through the middle of the knee joint, connecting the thigh bone (femur) to the shin bone (tibia). When it tears, the knee can feel loose or buckle unexpectedly, especially when twisting or changing direction. Because the ligament cannot heal reliably on its own, surgeons remove the torn remnants and replace them with a graft, which is a strip of tendon taken either from another part of your own body or from a donor. Over the following months, that graft gradually bonds with the surrounding bone and takes on the role of the original ligament.
Medical Condition
ACL reconstruction is considered when a torn ACL causes significant instability and conservative treatments such as physiotherapy have not restored enough function for the patient's daily life or activity level.
- Complete ACL tear (rupture) with knee instability during walking, sports, or work
- Partial ACL tear with persistent giving-way of the knee despite physiotherapy
- ACL tear combined with damage to the meniscus (the cartilage cushion inside the knee) or other knee ligaments
- Young or physically active patients who want to return to cutting, pivoting, or contact sports
- Patients whose work involves physical demands that require a stable knee
Reconstruction is generally not the first choice in every situation. Older or less active patients, or those with certain other health conditions, may do equally well with a structured rehabilitation programme instead. Your orthopaedic surgeon will weigh your age, activity goals, the pattern of the tear, and any additional damage inside the knee before recommending surgery.
- Patients who are happy to avoid sports that stress the knee and whose knee is stable enough for daily activities
- Active growth plates in the knee, which affects surgical technique choices in children and adolescents
- Severe arthritis (joint degeneration) already present in the knee, where reconstruction may not improve symptoms
- Medical conditions that significantly raise anaesthesia or surgical risk
Risks & Complications
ACL reconstruction is a routinely performed procedure, but like any surgery it carries risks that your surgeon will discuss with you beforehand.
- Knee pain and swelling in the weeks following surgery, which usually settles with time and physiotherapy
- Stiffness or limited range of motion in the knee
- Graft failure, meaning the new ligament does not integrate properly or is re-injured before it has fully matured
- Infection at the wound site or, more rarely, inside the knee joint
- Numbness or altered sensation around the knee or lower leg, usually from small nerves affected during graft harvesting
- Blood clot (deep vein thrombosis) in the leg, which in rare cases can travel to the lungs
- Donor-site discomfort, particularly if the graft is taken from your own kneecap tendon or hamstring tendon
- Risks related to anaesthesia, including allergic reaction or breathing difficulties
- In rare cases, damage to blood vessels or major nerves around the knee
Preparation & Procedure
Before surgery is scheduled, most surgeons want the acute swelling in the knee to settle, which may take several weeks after the injury. A course of physiotherapy before the operation, sometimes called "prehabilitation", helps strengthen the muscles around the knee and has been shown to support a smoother recovery.
Your medical team will give specific instructions about fasting. As a general guide, patients stop eating solid food around six to eight hours before the procedure, and stop drinking clear fluids about two hours before. Blood thinners, anti-inflammatory medications, and certain supplements are often paused in the days before surgery, but your surgeon and anaesthetist will give you a personalised list.
Smoking reduces blood flow and slows healing; most surgical teams ask patients to stop smoking for several weeks before and after the operation. Alcohol is also typically avoided in the days leading up to surgery.
Investigations done before surgery usually include blood tests, an MRI (magnetic resonance imaging) scan to map the injury in detail, and sometimes X-rays to assess the bones. An ECG (electrocardiogram, a heart tracing) and a chest X-ray may be added if you have other health conditions.
On the day of surgery, the steps typically follow this sequence:
- You arrive at the hospital, change into a surgical gown, and the surgical team confirms your identity and the correct knee.
- An intravenous (IV) line is placed in your arm to deliver fluids and medications.
- The anaesthetist gives you either general anaesthesia (you are fully asleep) or spinal/regional anaesthesia (the lower body is numb while you are awake or lightly sedated), depending on what is planned.
- The surgeon makes several small cuts around the knee and inserts a camera called an arthroscope to see inside the joint.
- The torn ACL remnants are removed and the new graft is prepared.
- Tunnels are drilled through the femur and tibia at precisely calculated angles.
- The graft is threaded through the tunnels and fixed in place with screws, staples, or other fixation devices.
- The camera and instruments are removed, the small cuts are closed, and a sterile dressing is applied.
- You are moved to the recovery area where the nursing team monitors you as the anaesthesia wears off.
Aftercare
Most patients go home the same day or the morning after surgery, once pain is controlled and they can safely use crutches. Recovery from ACL reconstruction is measured in months, not days, because the graft needs time to integrate fully with the bone, a biological process called ligamentisation.
- Crutches are used for the first one to four weeks, depending on your surgeon's protocol and how quickly your strength returns.
- A knee brace may be fitted to protect the graft during the early weeks; your surgeon will specify how long to wear it.
- Ice packs and keeping the leg elevated help manage swelling in the first few days.
- Physiotherapy usually begins within a day or two of surgery, starting with gentle range-of-motion exercises and progressing through strengthening and then functional training over several months.
- Driving is generally not permitted until you can brake firmly and predictably, which varies by which leg was operated on and your surgeon's assessment.
- Desk work or sedentary jobs can often be resumed within one to two weeks; physical or outdoor jobs take longer.
- Return to recreational sport usually takes at least six months, and return to competitive cutting or contact sports often takes nine months to a year or more.
- Follow-up appointments are typically scheduled at intervals to check wound healing, graft maturation, and functional progress.
- Wound care involves keeping the dressing clean and dry until the stitches or staples are removed, usually at ten to fourteen days.
- Signs such as increasing redness, warmth, discharge from the wound, sudden severe pain, or a swollen calf should prompt immediate contact with your medical team.
Cost & What Determines It
The price of ACL reconstruction varies considerably depending on where it is performed, what technique is used, and how complex the individual case is. Two patients with a torn ACL can face very different total bills.
- Complexity of the injury: an isolated ACL tear costs less than a combined procedure that also repairs a torn meniscus or other damaged structures in the same session.
- Graft choice: using your own tendon (autograft) versus a donor tendon (allograft) affects both the surgical time and material costs.
- Fixation devices: the type of screws, buttons, or anchors used to secure the graft in the bone tunnels varies in cost.
- Hospital class and country: a private hospital in a major city, particularly in countries with higher healthcare costs, will charge more than a comparable facility elsewhere.
- Anaesthesia type and duration: the longer the procedure and the more specialised the anaesthesia, the higher that portion of the bill.
- Length of hospital stay: an overnight stay adds accommodation, nursing, and monitoring costs compared with a day-surgery model.
- Imaging before and after: MRI before surgery and X-rays during follow-up may or may not be bundled into a package price.
- Physiotherapy: some packages include a set number of rehabilitation sessions; ongoing physiotherapy over the months of recovery is usually charged separately.
- Medications: prescription pain relief, blood-thinners to prevent clots, and any antibiotics given after surgery may be itemised individually.
Hospital packages for ACL reconstruction typically include the surgeon's fee, the anaesthetist's fee, the operating theatre, one night of inpatient care, the graft and fixation materials, and the first follow-up appointment. Items that are often billed separately include the pre-operative MRI, blood tests, the knee brace, physiotherapy sessions beyond any included allowance, and medications dispensed on discharge.
BPJS Kesehatan does not cover treatment carried out abroad, and most standard Indonesian health insurance policies follow the same rule. Patients who travel for ACL reconstruction abroad typically pay entirely out of pocket or through a private international health insurance plan that explicitly covers overseas procedures. Before confirming any booking, asking the hospital for a written, itemised cost estimate protects you from unexpected charges after the procedure is done.
Frequently Asked Questions
How long does ACL reconstruction surgery take?
The operation usually takes between one and two hours. The exact time depends on the graft type chosen (the tissue used to replace the torn ligament), whether any other structures in the knee are repaired at the same time, and the surgeon's approach.
How much does ACL reconstruction cost?
The cost varies depending on the graft type selected, the hospital class, the length of your stay, and any additional knee repairs performed during the same procedure. Requesting a written estimate directly from the hospital is the most reliable way to get a figure that reflects your specific situation.
How long is recovery after ACL reconstruction?
Most people need six to nine months before returning to sport, though the timeline depends on how well rehabilitation (physiotherapy exercises to rebuild strength and stability) progresses. Walking with support is often possible within days, and many patients manage light daily activities within a few weeks.
What warning signs should I watch for after ACL reconstruction?
Contact your medical team promptly if you notice increasing redness, warmth, or swelling in the knee, a fever, calf pain or swelling, or any wound that looks infected. Some swelling and discomfort in the first few days is normal, but symptoms that worsen rather than gradually improve deserve attention.
This page is general information, not a substitute for medical advice. Every case is different. Your doctor decides what is right for you.
