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An ACL injury can disrupt your daily life, making movement and physical activity difficult. Whether caused by sports, an accident, or a sudden twist, these injuries often leave you searching for ways to regain strength and stability.

At Barrington Orthopedic Specialists, we specialize in guiding patients through every stage of recovery. Founded in 1980, our practice was built on the belief that care should always be personal, treating patients as we’d want to be treated. Our expert team, including Dr. Sean JerebDr. Thomas Obermeyer, and Dr. Jason Rotstein, collaborates to create personalized treatment plans designed to help you recover from ACL injuries and return to what you love. 

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Recovery is possible, and it begins with understanding your injury and how therapy can help.

Understanding ACL Injuries

Your ACL is a key stabilizer in your knee joint, running diagonally through the center of the knee. It allows for bending, twisting, and overall knee stability. The ligament is often injured during activities involving sudden stops, changes in direction, or impacts, leaving individuals with knee pain, swelling, and reduced mobility.

If left untreated, ACL injuries can worsen over time, leading to instability or further damage to the knee. Early intervention through physical therapy not only addresses the immediate concerns but also ensures a foundation for lasting recovery.

Benefits of Physical Therapy for ACL Recovery

Physical therapy for ACL injuries helps in multifaceted ways:

  • Strengthens muscles surrounding the injured knee, such as the quadriceps muscles, hamstrings, and thigh muscles.
  • Restores knee flexion and extension, improving mobility.
  • Enhances balance and proprioception, ensuring better control during movement.
  • Reduces swelling and stiffness in the knee joint.
  • Prevents complications following knee surgery or severe strain.

By committing to these steps, ACL injury rehabilitation becomes more manageable, and the risk of future injuries drops significantly.

5 Effective Physical Therapy Exercises

These physical therapy exercises are designed to target strength, mobility, and stability, playing a crucial role in ACL recovery. Below is an improved, detailed breakdown of each exercise, along with tips to maximize their benefits.

1. Quadriceps Setting

This foundational exercise is ideal for activating and strengthening the quadriceps muscles without straining your knee joint. It’s particularly useful in the early stages of recovery to rebuild strength and prevent muscle atrophy.

Steps:

  • Sit or lie down with your injured leg extended and your knee straight. You can rest your other leg in a comfortable position.
  • Tighten the muscles in the front of your thigh by pushing the back of your knee flat against the floor or surface.
  • Hold the contraction for 5–10 seconds, focusing on engaging your quadriceps.
  • Slowly release and rest for a few seconds before repeating.

Tips for Success:

  • Imagine “pressing” your knee gently into the floor to ensure proper activation of the quadriceps.
  • Keep your breathing steady, exhaling as you tighten the muscles.

This exercise prevents muscle weakening and improves your ability to control knee movement, setting the groundwork for more complex exercises as you progress.

2. Heel Slides

Heel slides are essential for restoring knee flexion and improving your range of motion. They also help gently stretch the knee joint without risking excessive strain.

Steps:

  • Lie on your back with your legs extended and relaxed.
  • Slowly slide the heel of your injured leg toward your buttocks, keeping your foot in contact with the ground throughout the movement.
  • Hold the bent position for a few seconds, ensuring you don’t push into any sharp pain.
  • Gradually slide your heel back to the starting position.

Tips for Success:

  • Perform the movement slowly and without jerks to maintain control and proper alignment.
  • Use a towel or strap around your foot for some assistance if bending the knee is challenging.

Heel slides increase mobility and reduce joint stiffness, helping you regain functional movement in your knee, such as walking and climbing stairs.

3. Straight Leg Raises

This is a powerful exercise for rebuilding quadriceps strength and improving muscle control, especially during daily movements or rehabilitation after surgery.

Steps:

  • Lie on your back with your uninjured leg bent at the knee and your injured leg straight.
  • Tighten the thigh muscles of your injured leg (your quadriceps) to stabilize the knee.
  • Slowly raise your injured leg to the height of the opposite bent knee while keeping the leg straight.
  • Lower your leg back down with control and pause briefly before the next repetition.

Tips for Success:

  • Maintain a straight leg throughout the exercise; avoid bending at the knee during the lift.
  • Avoid arching your lower back. Engage your core muscles for added support.

This exercise safely builds muscle strength around the injured knee and enhances joint stability without compromising the healing ligament.

4. Bridge Exercise

Bridges are excellent for engaging your hamstring and core muscles, which contribute to knee stability and overall leg strength.

Steps:

  • Lie on your back with your knees bent and feet shoulder-width apart, flat on the ground.
  • Engage your core by drawing your belly button inward.
  • Press through your heels to lift your hips off the ground, creating a straight line from your shoulders to your knees.
  • Hold the position for a few seconds, then lower your hips back down in a controlled motion.

Tips for Success:

  • Keep your knees aligned with your hips during the movement. Avoid letting them fall inward or outward.
  • Do not overextend by lifting your hips too high; focus on creating a stable straight line.
    This exercise strengthens your hamstrings, glutes, and core, reducing the burden on your ACL and improving overall knee support.

5. Mini Squats

Mini squats are a functional exercise that replicates the movement patterns of activities like walking, climbing stairs, and sports. They strengthen your leg muscles while also improving balance and coordination.

Steps:

  • Stand with both feet shoulder-width apart and, if possible, add a light exercise band around your thighs for resistance.
  • Slowly lower your body into a quarter squat, keeping your back straight and knees aligned over your toes.
  • Hold the squat briefly at the bottom, then return to standing.
  • Perform 2-3 sets of 10-12 repetitions.

Tips for Success:

  • Keep your weight in your heels and avoid letting your knees collapse inward during the movement.
  • Use a chair or wall for support if needed, gradually decreasing assistance as you get stronger.

This exercise strengthens your quads, hamstrings, and glutes while also training your body to maintain balance and control during dynamic movements.

Tips for a Safe Recovery

Physical therapy exercises are crucial for ACL recovery, but it’s essential to perform them correctly and safely. Here are some additional tips to keep in mind:

  • Always start with low-intensity exercises and gradually increase difficulty as advised by your physical therapist.
  • Listen to your body and stop if you experience sharp pain or discomfort.
  • Don't push through fatigue; rest when needed to avoid overexertion.
  • Stay consistent with your exercise routine, aiming for 2–3 times a week.
  • Communicate with your physical therapist about any concerns or difficulties you encounter during exercises.

Remember that recovering from an ACL injury takes time and patience. With proper guidance and diligent practice of these exercises, you can strengthen your knee and regain the confidence to return to your daily activities.  

Preventing Re-Injury

After recovering from an ACL injury, it’s crucial to take steps to prevent re-injury in the future. Here are some tips:

  • Focus on maintaining muscle strength and flexibility in your legs.
  • Practice proper form during exercises and movements to avoid placing unnecessary strain on your knees.
  • Gradually increase the intensity of physical activities and sports, rather than jumping back in at full force.
  • Wear appropriate protective gear, such as knee braces or supportive shoes, when engaging in high-risk activities.
  • Listen to your body and don't ignore any signs of pain or discomfort; seek medical attention if necessary.

Strengthen Your ACL at Barrington Orthopedics

Regaining strength, stability, and confidence starts with expert care. Barrington Orthopedic Specialists offers personalized physical therapy for ACL injuries, tailored to your unique needs. Our dedicated team, including Dr. Sean JerebDr. Thomas ObermeyerDr. Jason RotsteinDr. Brett Schiffman, and Dr. Mark Levin, is here to support you at every step of your recovery.

To learn more about our services or schedule an appointment, visit Barrington Orthopedic Specialists today. Together, we’ll support you in rebuilding not just your knee, but your confidence too.

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