ACL Tear

An anterior cruciate ligament tear is a common knee injury, particularly among athletes. This article will explore what ACL tea is, its symptoms, and treatment options.
Contact our physical therapists in Manhattan, NY, today at Paspa Physical Therapy for a comprehensive understanding of how we can help you recover with personalized, one-on-one care!
What is an ACL Tear?
The anterior cruciate ligament (ACL) is one of the four major ligaments in the knee joint. It plays a critical role in stabilizing the knee, particularly during activities involving sudden stops or changes in direction.
An ACL tear occurs when this ligament is stretched beyond its capacity, leading to a partial or complete tear. This injury is common in sports like soccer, basketball, and skiing, where quick movements and turns are frequent.
How Does it Feel?
An ACL tear can be a distressing experience, often marked by a sudden “pop” in the knee. This sensation is usually followed by intense pain and swelling. The knee may feel unstable or give way when you attempt to stand or walk. Some individuals report that their knee feels as though it is “loose” or unable to bear weight, leading to significant discomfort and difficulty in movement.
What Causes an ACL Tear?
An ACL tear is typically caused by a sudden change in direction, a rapid stop, or a direct impact to the knee. These movements place extreme stress on the ACL, especially when the knee is slightly bent. High-risk activities include jumping, pivoting, and decelerating quickly, which are common in sports like football, tennis, and gymnastics.
Additionally, improper landing techniques, weak leg muscles, and poor biomechanics can increase the risk of an ACL tear. Understanding these risk factors can help in preventing anterior cruciate ligament injuries.
What Are the Symptoms of an ACL Tear?
The symptoms of an ACL tear are usually immediate and include:
- A loud “pop”: Many individuals hear or feel a popping sensation in their knee at the time of injury.
- Severe pain: The pain is often sharp and localized to the knee joint, making it difficult to continue activity.
- Swelling: Swelling typically begins within a few hours as the knee joint fills with fluid due to the injury.
- Instability: The knee may feel unstable or as though it could give way, particularly during activities that involve weight-bearing.
- Loss of range of motion: The knee may become stiff, and bending or straightening it fully may be challenging.
- Difficulty walking: Bearing weight on the injured leg often leads to a limp or inability to walk.

How Are ACL Tears Diagnosed?
Diagnosing an ACL tear involves a combination of physical examination and imaging tests. During the physical exam, a healthcare provider will assess the knee’s stability, range of motion, and tenderness. Specific tests, such as the Lachman test and the anterior drawer test, help evaluate the integrity of the ACL.
Imaging tests, including X-rays and magnetic resonance imaging, are often used to confirm the diagnosis. X-rays can rule out bone fractures, while an MRI provides detailed images of the soft tissues, including the anterior cruciate ligament, medial collateral ligament, and other structures within the knee joint. These tests are crucial for determining the extent of the injury and planning the appropriate treatment.
How Are ACL Tears Treated?
Treatment for ACL injuries depends on the severity of the tear and the patient’s activity level. Options include both surgical and non-surgical approaches:
- Non-Surgical Treatment: For partial tears or for individuals with low activity levels, non-surgical treatment may be sufficient. This approach typically involves physical therapy to strengthen the leg muscles, improve knee stability, and restore range of motion. Bracing and activity modification are also part of conservative management.
- Surgical Treatment: A complete tear of the ACL often requires surgical intervention, especially for athletes or those with high activity levels. The surgery involves reconstructing the ACL using a graft, which can be taken from the patient’s own tissue (autograft) or from a donor (allograft). After surgery, rehabilitation through physical therapy is essential for recovery.
How Can Physical Therapy Help ACL Tears?
Physical therapy is a cornerstone in both non-surgical and post-surgical treatment of ACL tears. At Paspa Physical Therapy, our experienced physical therapists in NYC provide one-on-one care to help patients recover from ACL injuries.
- Pre-Surgery Rehabilitation: Also known as “prehab,” this phase focuses on strengthening the muscles around the knee and improving flexibility. This preparation can lead to better surgical outcomes and a quicker recovery.

- Post-Surgery Rehabilitation: After ACL reconstruction, physical therapy is vital for restoring knee function. The rehabilitation process is divided into phases:
- Phase 1: Focuses on reducing swelling, restoring range of motion, and activating the leg muscles.
- Phase 2: Involves strengthening exercises to build muscle around the knee joint, with an emphasis on the leg muscles, including the hamstrings and quadriceps.
- Phase 3: Concentrates on functional training, including balance and proprioception exercises, to prepare the patient for a return to daily activities.
- Phase 4: The final phase involves sport-specific drills and exercises to ensure the knee is stable and strong enough for high-impact activities.
Paspa Physical Therapy’s individualized approach ensures that each patient receives tailored exercises and manual therapy techniques that address their specific needs. Our private treatment rooms provide the privacy needed to focus on recovery without distractions, while our full gym allows for comprehensive rehabilitation.
Preventing an ACL Tear
Prevention strategies for ACL injuries focus on strengthening the muscles around the knee joint, improving flexibility, and practicing proper movement techniques. Some key preventive measures include:
- Strength Training: Building strong leg muscles, particularly the quadriceps, hamstrings, and glutes, can help stabilize the knee and reduce the risk of injury.
- Flexibility Exercises: Stretching the muscles around the knee, including the posterior cruciate ligament and medial collateral ligament, can improve flexibility and prevent strain on the ACL.
- Plyometric Exercises: These exercises train the body to absorb shock more effectively, reducing the likelihood of an ACL injury during sudden movements.
- Neuromuscular Training: Focusing on balance and proprioception helps the body react more effectively to sudden changes in direction, reducing the risk of an ACL tear.
- Proper Technique: Learning and practicing proper landing and pivoting techniques can significantly reduce the risk of anterior cruciate ligament injuries.
At Paspa Physical Therapy, we incorporate preventive exercises into our treatment plans to help patients avoid future injuries. By providing one-on-one attention, our physical therapists can ensure that each patient is performing exercises correctly and safely.
Visit Your ACL Recovery Partner Today
Recovering from an ACL tear requires dedication, time, and the right support. At Paspa Physical Therapy, we are committed to helping you regain your strength, mobility, and confidence. Our team provides one-on-one care in a supportive environment, using our full gym and private treatment rooms to offer personalized, focused rehabilitation.
If you’ve suffered an ACL injury, don’t wait to start your recovery. Schedule an appointment with our expert physical therapists in Manhattan, New York, today and take the first step towards getting back to the activities you love!
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