Can ACL tear heal itself?
Sarah Smith
Published Jan 21, 2026
We consider non-surgical treatments first, but if the tear is complete and the knee is unstable, or the knee doesn't heal with non-surgical treatment, surgery may be necessary. The ACL cannot heal on its own because there is no blood supply to this ligament.
How long does an ACL tear take to heal without surgery?
Non-surgical Treatment
The time it takes to recover is approximately 3 months.
What happens if a torn ACL goes untreated?
If left untreated, a small ACL tear will increase in size, causing more pain and increasing the laxity in the knee. Without a properly functioning ACL, the other structures of the knee experience greater strain, which causes further injuries to tissues in the knee.
How do you heal a torn ACL naturally?
model of self-care at home:
- Rest. General rest is necessary for healing and limits weight bearing on your knee.
- Ice. When you're awake, try to ice your knee at least every two hours for 20 minutes at a time.
- Compression. Wrap an elastic bandage or compression wrap around your knee.
- Elevation.
Can you walk with a torn ACL without surgery?
With ACL tears, walking is possible but can be painful. The patient should be able to walk in a straight line but will be unable to make sudden turns or pivot. A knee brace can help stabilize the knee, but with ACL tears, surgery is almost always required.
16 related questions foundCan I live with a torn ACL?
Can I live a normal life with an ACL tear? Yes, but it may take some time before you're completely back to how you were before the injury. Whether you choose to have surgery or not, with physical therapy you will eventually be back to normal and able to live your life.
How do I know if my ACL is torn again?
Seven Self-Administering Tests to Know If You've Torn Your ACL
- Listen for a Popping sound. If you tore your ACL your knee will pop. ...
- Observe a Joint Shift. Compare your injured knee with your healthy knee. ...
- Walk. A torn ACL will inhibit your ability to walk. ...
- Swelling. ...
- Evaluate Pain. ...
- Unable to Bend Knee. ...
- Weak Leg Muscles.
How long is ACL recovery?
Recovery generally takes about nine months. It may take eight to 12 months or more before athletes can return to their sports.
Do all ACL tears require surgery?
ACL injuries can either be complete or partial. While complete ACL tears almost always require surgery, partial ACL tears may be treated effectively with nonsurgical methods. ACL tears are graded by severity and are called sprains (a sprain is a stretch or tear in a ligament).
Can an ACL grow back?
So can the ACL grow back? We've seen excellent results on post-injection MRIs that support that concept. In addition, these results fit with how these patients respond physically in that most return to full sporting activities. This has provided more evidence that the ligament can grow back.
How long can you delay ACL surgery?
A delay of more than six months increases the risk of further damage and degeneration of the involved knee.
How long can you go with a torn ACL?
An ACL tear recovery time is generally eight to nine months, though some people may recover in six months.
What does a partially torn ACL feel like?
Severe pain. Rapid swelling. A loud “popping” in the knee. Knee instability where the knee feels like it will buckle and cannot support the weight.
How can I heal my ACL faster?
Tips for Healing Faster after ACL Surgery
- Physical therapy. A physical therapy program designed specifically for you will help you recover function, mobility, and strength. ...
- Cryotherapy. ...
- Bracing. ...
- Rest.
Can a dog's partially torn ACL heal on its own?
If left untreated, the lameness caused by a partially torn or ruptured CCL will improve or go away completely in many dogs, especially small ones, within three to six weeks.
How do I know if I need ACL surgery?
Surgery is generally recommended for people with recurring ACL injuries and high level athletes who plan on returning to their sport of choice. The AAOS recommends non-surgical treatment for patients who have a lower activity level or more minor ACL injuries.
What percent of ACL tears need surgery?
About 50% of young active patients will need a delayed reconstruction of the ACL (level 1 study).
Can a Grade 3 ACL tear heal without surgery?
Very minor tears (sprains) may heal with non-surgical treatments and regenerative medicine therapy. But full ACL tears cannot be healed without surgery. If your activities do not involve making pivoting movements on the knee, physical therapy rehabilitation may be all you need.
Does ACL tear hurt?
One of the most feared sports and work injuries is a tear of the anterior cruciate ligament (ACL), which has ended or derailed the careers of numerous high-profile athletes. A torn ACL is very painful and can debilitate a person for several months and perhaps for life, although recovery for some is possible.
How painful is ACL surgery?
Most people have some surgery-related pain and discomfort for the first week or so. Not surprisingly, pain decreases with time. By the end of a week or two at the most, you should have very little discomfort. Swelling and bruising are also relatively common, and like discomfort, they're temporary.
Will my knee ever be the same after ACL surgery?
Long-term results after anterior cruciate ligament (ACL) surgery aren't always perfect. But for the majority of patients, the outcome is favorable and patients are happy with the results.
Should I get a second ACL surgery?
The decision to proceed with a second ACL surgery depends on the patient, the condition and stability of his or her knee, the desired activity level and imaging findings. Patients are advised to seek out a specialist with ample experience in revision ACL surgery for the best chance of a good outcome.
Is it easier to tear your ACL the second time?
I'm going to get straight to the point on this question: can the acl be torn a second time in the same knee? Yes, not suprisingly, the ACL may be torn a second time. However, it's not the end of the world. The risk, percentage-wise, of retearing the ACL is about 5%, which puts you at about even with the other knee.
Can you repair an ACL twice?
In most instances, the surgery is a success and rehabilitation works out well. Which begs the question, can you tear your ACL again after surgery? Unfortunately, the answer is yes because there is a chance that complications can arise. In fact, you can re-tear the new ligament.
How can I tell if I tore my ACL or MCL?
It can be easy to confuse the two injuries, as both a torn ACL and a torn MCL exhibits similar symptoms, including: swelling, inflammation, extreme pain and possible bruising. The main difference between an ACL tear and an MCL tear is that an ACL tear will have a distinctive popping sound, while an MCL tear will not.