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Halcy Orthopedics

ACL Tear Treatment in New York

Also known as: Anterior Cruciate Ligament Tear, ACL Injury, ACL Rupture, Anterior Cruciate Ligament Injury, Torn ACL

4 min read
Reviewed by Dr. Maya Chen, MD, FAAOS

An ACL tear is an injury to the anterior cruciate ligament, one of the key ligaments that stabilize the knee by connecting the thighbone (femur) to the shinbone (tibia). ACL injuries most often occur during sudden pivoting, cutting, deceleration, or landing maneuvers in sports such as soccer, basketball, football, and skiing. Patients typically describe a popping sensation at the time of injury, rapid swelling, and a feeling that the knee gives way. Partial ACL tears are uncommon; most injuries are complete or near-complete ruptures, which do not heal on their own and may require surgical reconstruction to restore stability.

At a Glance

  • One of the most common knee injuries is an anterior cruciate ligament sprain or tear, particularly in athletes participating in high-demand sports such as soccer, football, and basketball[1]
  • Partial ACL tears are rare; most ACL injuries are complete or near-complete tears, and they do not heal on their own[1]
  • ACL reconstruction is generally recommended for young, active patients who wish to return to cutting or pivoting sports, while less-active patients may do well with structured rehabilitation alone[2]

Affected Anatomy

  • Anterior cruciate ligament (ACL)
  • Knee joint
  • Femur (thighbone)
  • Tibia (shinbone)
  • Meniscus (often injured concurrently)
  • Articular cartilage of the knee
  • Medial collateral ligament (sometimes injured together with the ACL)

What are the symptoms of ACL Tear?

  • Audible popping sensation at the time of injury
  • Rapid swelling of the knee, typically within the first few hours
  • Sense that the knee gave way or buckled during the injury
  • Pain with weight-bearing or attempting to continue activity
  • Instability or a feeling that the knee will give out, especially with cutting or pivoting
  • Decreased range of motion of the knee
  • Difficulty walking, running, or climbing stairs

When should you seek care for ACL Tear?

  • Sudden knee injury with a popping sensation and rapid swelling
  • Inability to bear weight on the leg after the injury
  • Persistent instability or feeling that the knee gives way
  • Decreased range of motion or persistent locking of the knee
  • Pain that does not improve within a few days despite rest and ice

If any of these apply, consider reaching out to schedule a visit.

What causes ACL Tear?

Causes

  • Sudden change of direction (cutting) or pivoting with the foot planted
  • Awkward landing from a jump
  • Direct contact or collision, such as a tackle in football
  • Rapid deceleration or stopping suddenly while running
  • Twisting injuries with the knee flexed and rotated
  • Hyperextension of the knee during athletic activity

Risk Factors

  • Participation in high-demand sports such as soccer, basketball, football, and skiing
  • Female sex (women have higher rates of non-contact ACL injuries in pivoting sports)
  • Adolescent and young adult age range
  • Poor neuromuscular control, hamstring weakness, or quadriceps-dominant landing mechanics
  • Hyperlaxity of joints or generalized ligamentous laxity
  • Prior ACL injury, especially on the same knee or on the contralateral knee
  • Playing on certain field surfaces or with certain footwear

How It's Diagnosed

  • 1History and physical examination, including Lachman, anterior drawer, and pivot-shift tests
  • 2Plain X-rays to evaluate for bony injury, including an avulsion fracture or Segond fracture
  • 3MRI, which is the preferred imaging study to confirm an ACL tear and assess associated meniscal or chondral injuries
  • 4Assessment of associated injuries to the meniscus, collateral ligaments, and cartilage
  • 5In selected cases, diagnostic arthroscopy

How is ACL Tear treated?

At Halcy Orthopedics, we offer several approaches for ACL tear:

Knee Arthroscopy

Knee arthroscopy is a minimally invasive surgical procedure in which a small camera, called an arthroscope, is inserted into the knee joint through sm...

Learn more →

Physical Therapy

Physical therapy is a healthcare discipline that uses guided movement, manual techniques, and targeted exercise to restore function and reduce pain af...

Learn more →

Prognosis and Recovery

  • Most patients regain near-normal knee function after appropriate treatment
  • Return to cutting or pivoting sports after ACL reconstruction is typically targeted at 9 to 12 months
  • Approximately 80 to 90 percent of athletes return to some level of sport after reconstruction, with a smaller proportion returning to pre-injury performance
  • Risk of re-tear of the reconstructed graft or tear of the opposite ACL is meaningful, particularly in younger athletes returning to cutting sports
  • Associated meniscal injury and concurrent cartilage damage increase the long-term risk of post-traumatic osteoarthritis

Frequently Asked Questions

An ACL tear is an injury to the anterior cruciate ligament, one of the key ligaments that stabilize the knee. ACL injuries most often occur during sudden cutting, pivoting, or deceleration in sports. Patients typically describe a popping sensation, rapid swelling, and a feeling that the knee gave way.
Common symptoms include a popping sensation at the time of injury, rapid knee swelling, pain, instability, and a feeling that the knee will give out, especially with cutting or pivoting. Decreased range of motion and difficulty bearing weight are also common.
ACL tears most often occur during sudden change of direction, awkward landings from a jump, direct contact during contact sports, or rapid deceleration. Hyperextension or twisting with the foot planted are also common mechanisms.
Seek prompt evaluation for any sudden knee injury with a popping sensation, rapid swelling, or inability to bear weight. Persistent instability, feeling that the knee gives way, or decreased range of motion warrants medical evaluation. MRI is generally the preferred study to confirm an ACL tear.
Initial management includes rest, ice, bracing, and physical therapy emphasizing quadriceps and hamstring strengthening. ACL reconstruction is generally recommended for patients who wish to return to cutting or pivoting sports. Less-active patients may do well with structured rehabilitation alone.
Most complete ACL tears do not heal on their own because the torn ends retract and do not reattach. Some patients can compensate with rehabilitation and activity modification, but those who wish to return to cutting or pivoting sports typically require ACL reconstruction.

Your Practitioner

Dr. Maya Chen, MD, FAAOS

Fellowship-trained orthopedic surgeon specializing in cartilage preservation and minimally-invasive joint procedures. Dr. Chen treats high-performance athletes and weekend warriors alike, with a focus on returning patients to the activities they love.

Dr. Marcus Rivera, MD

Fellowship-trained orthopedic spine surgeon focused on conservative-first care for sciatica and herniated discs. Dr. Rivera has performed more than 1,500 lumbar microdiscectomies and lectures internationally on minimally invasive spine surgery.

Dr. Priya Nair, MD

Non-operative sports medicine physician focused on regenerative orthopedic care. Dr. Nair leads the practice's PRP and ultrasound-guided injection programs, and serves as team physician for two NYC-area collegiate athletic departments.

Sources & References

This article draws from 4 sources, including leading medical institutions.

Medical Institutions

Educational & General

Medically reviewed by Dr. Maya Chen, MD, FAAOS · Last reviewed: 2026-05-11