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The anterior cruciate ligament, popularly known as ACL, is a ligament which is situated at the anterior or front of the knee. It crosses over the PCL, or posterior cruciate ligament, and is responsible for stabilising the knee while preventing excess forward movement of the thigh (femur) and shin (tibia) bones. ACL tear is one of the most common types of sports injury, and it is primarily experienced by athletes participating in sports that involve a lot twisting, turning, jumping or sudden changes in movement. Once determined as a devastating blow to an athlete’s career, modern medicine and ACL rehabilitation procedures have now made it possible for athletes to make full recovery from it and return to sport after ACL tear.
Understanding ACL Tear
The ACL, or anterior cruciate ligament, is a ligament that is present at the anterior or front of the knee. It crosses over the PCL, or posterior cruciate ligament, forming an X shape. Together with the PCL, the ACL joins the thigh bone to the shin bone, and prevents excessive forward movement of these bones. ACL tears happen when the knee experiences enough force to get twisted beyond its natural limit. This is one of the most common types of sports injury experienced by athletes, especially those involved in sports like basketball, gymnastics, football and skiing.
ACL Rehabilitation and Treatment
ACL tear was previously deemed as something that could potentially end an athlete’s career. But with advancements in modern medicine and ACL rehabilitation measures, it is now possible to make a full recovery and return to sport after ACL tear after a period of time.
ACL tears are primarily treated with surgery, either by reconstructing (most common) or repairing (less common) the torn ligament. A new surgical approach involves using a protein-based implant with the patient’s blood. This new procedure, called BEAR (bridge-enhanced anterior cruciate ligament restoration), has seen significant successes, but requires more research.
ACL Recovery Timeline
The ACL recovery timeline phases start from week 1, going all the way to full recovery. Each phase of ACL rehabilitation is designed to build progressively, ensuring that your body adapts and strengthens safely. Adhering to this structured approach, guided by experienced professionals, is key to a successful return to sport after ACL surgery.
Phase 1: Post-Surgery Care (Weeks 1-2)
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Goals: To manage pain, reduce swelling, protecting the surgical graft, and initiating muscle activation. Regaining full knee extension is critical during this phase.
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Activities:
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RICE (Rest, Ice, Compression, Elevation) protocol.
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Gentle, passive range of motion exercises (under guidance).
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Quadriceps sets and ankle pumps to prevent muscle atrophy and promote circulation.
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Use of crutches and a knee brace as prescribed.
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Phase 2: Early ACL Rehabilitation (Weeks 3-6)
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Goals: To restore full, non-weight-bearing range of motion, improve quadriceps strength, and gradually progress to partial weight-bearing.
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Activities:
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Progressive range of motion exercises.
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Initiation of closed-chain strengthening exercises (e.g., heel slides, mini-squats with support).
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Stationary cycling with minimal resistance.
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Gradual weaning off crutches and brace as strength and gait improve.
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Phase 3: Intermediate Strengthening (Weeks 7-12)
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Goals: The focus shifts to enhancing overall lower extremity strength, improving balance, and refining proprioception (your body's sense of position in space).
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Activities:
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Increased resistance in closed-chain exercises (leg press, squats).
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Introduction of balance exercises (e.g., single-leg stands, wobble board).
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Elliptical trainer and stair climber.
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Initiation of light jogging on a treadmill, provided strength and form are adequate.
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Phase 4: Advanced Strengthening & Agility (Months 3-6)
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Goals: This phase prepares the athlete for sport-specific movements, focusing on power development, agility, and dynamic stability.
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Activities:
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Plyometric exercises (jump training).
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Agility drills (shuttle runs, ladder drills).
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Progressive running program, including changes of direction.
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Sport-specific drills, gradually increasing intensity and complexity.
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Phase 5: Return to Sport Preparation (Months 6-9+)
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Goals: The ultimate goal is a safe and confident return to sport after ACL. This involves comprehensive functional testing, psychological readiness, and perfecting sport-specific skills.
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Activities:
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High-intensity, sport-specific training.
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Simulated game scenarios.
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Biodex or similar strength and power testing.
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Psychological preparation and counseling to address any apprehension.
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Conclusion
ACL tear is a common knee injury that is suffered by many athletes worldwide. Once considered detrimental to one’s sports career, it is now entirely possible to make a full recovery, thanks to modern treatment and ACL rehabilitation approaches. Studies indicate that athletes who delay their return to sport until at least 9 months post-surgery, having completed a comprehensive ACL rehabilitation program, can significantly reduce their risk of re-injury. At Manipal Hospitals Dhakuria, our experts at the Department of Orthopaedics use the latest technology in providing accurate diagnosis and creating personalised treatment plans for each patient’s individual needs. For expert care and guidance for your ACL injury, visit Manipal Hospitals Dhakuria today!
FAQ's
Partial ACL tears can heal without surgery within a period of 3 months with proper ACL rehabilitation to help rebuild strength and functionality in the knee. But full ACL tear can only be repaired with surgery.
An ACL tear takes about 6-9 months to heal fully, provided that proper recovery protocol was followed from right after surgery.
Some of the most common symptoms associated with an ACL tear include pain, swelling and knee instability, which can often be followed by a “pop” sound during the injury.
The ACL is a ligament present at the anterior or front of the knee, which, together with the posterior cruciate ligament, prevents excessive twisting of the knee. But when the knee is twisted beyond its natural capacity due to force, the ACL tears, leading to pain, swelling and difficulty walking.
The most common treatment form of ACL is surgery, especially reconstructive surgery with a ligament taken from a different part of the body (hamstring or kneecap). ACL repair may also be performed, but it is less common.
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