How long will it take to heal a torn ligament?

Can ligaments heal on their own? For Grade 1 and most Grade 2 sprains, yes — the body’s natural repair process can fully heal the ligament without surgery. Grade 3 (complete) tears are the exception and often need surgical repair. How long it takes depends on several factors, explained below.

Healing times for torn ligaments can vary significantly depending on several factors, including the severity of the tear, the specific ligament involved, the patient’s age, overall health, and the treatment protocol followed.

Generally, ligament healing is a lengthy process due to the relatively poor blood supply to these structures compared to other tissues, and recovery time depends heavily on how severe the tear is (graded 1 to 3, as summarized above).

So, what do these grades of ligament injury mean? How do other factors determine the healing period? Let’s find out in this article.

Repairing process of ligament injury

Before we move on to how, based on the level of injury, ligament tears are classified into three grades, it is very important to learn the repairing process.

The repair process of ligament tears is different from that of other soft tissues. Because ligaments have relatively low vascularity (blood supply), healing takes much more time.

Muscle pain due to exercise heals within a week (due to a micro-tear in muscle fibre). However, ligament sprains may take months to years to fully recover. The healing/recovery process of the ligament is the same as that of any other soft tissue, but it heals with the formation of fibrous tissue, which limits the ligament’s elasticity.

It consists of the below-mentioned phases.

Inflammatory Phase: The inflammatory phase follows immediately after the injury. Depending on the severity, it may last for 3-5 days. The internal bleeding and fluid from damaged cells together produce swelling within the joint. Joint swelling causes pain.

Repair Phase: After inflammation and swelling, the repair phase starts. It is mediated by blood clotting over the damaged tissue and lasts 3-21 days after the injury. With blood clots, the fibroblast cells proliferate and begin to lay down collagen tissue.

Remodelling phase: The remodelling phase follows the repair phase and can last up to a year. It involves the maturation of collagen tissue and the realignment of collagen tissue. The haphazardly placed collagen tissue is weak; with the alignment of collagen tissue, it gradually becomes stronger and has much more tensile strength.  

Also read: 7 Easy Ankle Sprain Exercises to Start Running Early

Classification of a ligament sprain

The healing period for ligament injury depends on the degree of ligament sprain. The higher the degree, the more time it takes to heal. The degree of damage to the ligament’s fibres can be classified into 3 grades¹.

GRADE 1 SPRAIN:

• A grade 1 sprain is considered a mild sprain where only a few collagen fibres are damaged. This leads to a local inflammatory response characterized by pain over the affected ligament.
• Typically, grade 1 sprains result in minimal swelling and no joint instability.
• Treatment for a grade 1 sprain usually involves rest, ice, compression, elevation (RICE), and pain management.
• Allowing the ligament to heal correctly is essential to prevent further injury and promote full recovery.
• Healing of grade 1 ligament tear can take 2-4 weeks with proper care.

GRADE 2 SPRAIN:

• A grade 2 sprain involves the significant tearing of collagen fibres, leading to intense pain and swelling in the affected joint.
• This type of sprain requires prompt medical attention and may involve a longer recovery period compared to a grade 1 sprain.
• It’s important to follow the recommended treatment plan, which may include rest, ice, compression, elevation (RICE) and physical therapy to aid in healing and restore function to the affected joint.
• Grade 2 ligament injuries take longer to heal; it can take 6-8 weeks to recover fully.

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GRADE 3 SPRAIN OR RUPTURE:

• A Grade 3 sprain or rupture occurs when the ligament is completely torn.
• Interestingly, immediately after the rupture, there may be no pain. However, subsequent pain can result from spasms around the joint.
• This condition can lead to joint effusion and marked joint instability. In some cases, surgery may be required to restore joint stability.
• Post-surgery, the healing period can take 3-6 months.

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Treatment for a torn ligament

Treatment depends entirely on the grade of the tear:

• Grade 1 (mild): RICE (rest, ice, compression, elevation), pain management, and early gentle movement. Surgery is not needed.
• Grade 2 (moderate): RICE plus bracing and a structured physiotherapy program to restore strength and joint stability before returning to activity.
• Grade 3 (complete tear/rupture): Often requires surgical repair or reconstruction, followed by supervised rehab. Some Grade 3 tears in low-demand joints can be managed conservatively with bracing, but a physio or orthopedic surgeon needs to assess joint stability first.

No two ligament injuries are identical, so treatment should always be confirmed by a physiotherapist or orthopedic specialist after a physical exam (and imaging, if the tear is suspected to be Grade 2 or 3).

Can ligaments heal on their own?

Yes, for Grade 1 and most Grade 2 sprains, ligaments heal on their own without surgery. This is because the body’s natural repair process (inflammation, repair, remodeling) lays down new collagen tissue over the damaged fibers.

What you can’t skip is time and protected loading; that’s what makes the new collagen align properly and regain strength.

Grade 3 complete tears are the exception. A fully ruptured ligament has no tissue bridge left to heal across, so the two torn ends often can’t reconnect well on their own. Which is why surgery is more commonly recommended for complete tears, especially in joints that need to bear weight or rotate under load (like the knee).

How to heal ligaments faster

You can’t shortcut the biological timeline, but you can avoid slowing it down:

• Don’t skip the inflammatory phase. Some swelling and pain in the first 3-5 days is part of healing, not a problem to eliminate entirely. Heavy NSAID use in this window has been linked to slower ligament healing in some studies².
• Move early, but protected. Complete immobilization weakens the healing tissue; controlled, pain-free motion (guided by your physio) helps collagen fibers align correctly³.
• Follow a progressive loading plan. Jumping back to full activity before the remodeling phase is done (which can take months) is the single biggest cause of re-injury.
• Don’t skip physiotherapy. Guided strengthening and proprioception (balance/joint-position) training reduce re-injury risk more than rest alone⁴.
• Support the basics. Adequate protein intake and staying hydrated support collagen synthesis; smoking notably impairs healing⁵.

Conclusion

The healing time for a torn ligament varies depending on several factors. Mild injuries may heal in a few weeks, while severe injuries or those requiring surgery can take several months to a year. Surgical reconstruction is necessary for a complete ligament tear, and surgical repair is required for a grade 2 tear.

A previous ligament injury also raises your long-term risk of knee osteoarthritis, so once you’ve recovered, it’s worth checking your risk with our free Knee Osteoarthritis Risk Calculator.

Sunit. S. Ekka

The author is a physiotherapist who has been practising for the last 17 years. He holds a Bachelor's in Physiotherapy (BPT) from SVNIRTAR (Swami Vivekananda National Institute of Rehabilitation and Research), one of the prestigious physiotherapy schools in India.

Whatever he learns dealing with his patient, he shares it with the world through blogs and e-books. He also owns a YouTube channel, "Sunit Physiotherapist" with over 8 lakh active subscribers. Here, he shares everything he gets to learn serving the patient.