ACL Tear, Repair & Revision

A board-certified, fellowship-trained orthopaedic knee surgeon and sports medicine specialist, Dr. Steven Chudik is renowned for his arthroscopic knee expertise and innovative procedures that reduce surgical trauma, speed recovery and yield excellent outcomes.

Through his research, Dr. Chudik investigates and pioneers advanced and novel arthroscopic procedures, instruments and implants that have forever changed patients’ lives. Never content to settle for what’s always been done for orthopaedic knee care, Dr. Chudik prides himself on providing individualized care and developing a plan that is right for each patient. By taking this approach for the past 20 years, Dr. Chudik has developed minimally invasive surgical techniques, instruments and implants for the arthroscopic repair, reconstruction and revision-reconstruction of anterior cruciate ligament (ACL) injuries, pediatric growth plate-sparing ACL surgery, and meniscus repair, as well as injury-specific rehabilitation programs and return to sport protocols and testing.

ACL Expertise

  1. Arthroscopic anatomic ACL reconstruction
  2. Arthroscopic physeal-sparing (growth plate) reconstruction in skeletally immature pediatric patients (Developed by Dr. Chudik)
  3. Complex arthroscopic revision surgery for previously failed ACL reconstructions
  4. Arthroscopic Tibial Spine Avulsion Surgery for Pediatric Patients
  5. Anterolateral ligament reconstruction
  6. Tunnelless ligament reconstruction (Under development by Dr. Chudik)
  7. Arthroscopic meniscus repair
  8. Arthroscopic meniscectomy
  9. Arthroscopic partial meniscectomy
  10. Arthroscopic meniscal root repair
  11. Arthroscopic meniscus transplant
  12. Return to sport Neuromuscular training program
  13. Return to sport testing

Arthroscopic Assisted ACL Reconstruction

Individualized Treatment and Rehabilitation

Because no two people and no two injuries are alike, Dr. Chudik uses his expertise to develop and provide individualized care and recovery plans for his patients. This customized attention explains why patients travel to have Dr. Chudik care for their knee injuries, especially pediatric ACL injuries and patients with failed ACL surgeries.

To ensure his ACL patients are able to return to sports and activities safely, Dr. Chudik researched and developed a return to sport functional test protocol that provides objective measures for both the athlete and Dr. Chudik to know when it is safe to return, as well as what else needs to be done if the athlete fails to pass the exam.

Testimonials and Patient Stories

“Dr. Chudik and his team do a great job! My wife and I both have had been treated with care and compassion with our injuries. I would recommend anyone with a knee problem to see him!”

“I had a great experience with Dr. Chudik. He did a great job on my 2nd surgery. He fixed what the other doctor tried fixed on my 1st surgery. Because of him I walk better. He is so wonderful. I always refer people to him with any knee pain.”

“Doctor Chudik has repaired three different joints for myself and worked on many friends that I have sent his way. His team members are all remarkable and very helpful too. His bedside manners are very good. HE explained in detail what to expect. I have not been disappointed with any of his work and would recommend Doctor Chudik and Hinsdale orthopedics to anyone in need of joint care. Great team and amazing doctor.”

“Since I was 8 years old I have had over 100 dislocations on each leg. My pain management doctor referred me to Dr. Chudik. He is a miracle worker and his staff are beyond great as well. I can’t say enough good about him. He seriously gave me my life back. I HIGHLY recommend him and will be forever grateful for him! And for anyone wondering, his bedside manner is nothing short of excellent. I have seen many, MANY top notch knee and sports doctors since I was little–the Cubs, the White Sox, the Bears doctors–and Dr. Chudik beat them all and gave me my life back!”

“I cannot say enough positives about my experience with Dr. Chudik and his team. At 47 years old, I was extremely apprehensive about needing a TKA. His team walked me through every step. I’m grateful for his expertise in stressing the importance of keeping my leg straight as possible the first few days after surgery. I’m able to straighten and bend my leg in just 3 months after surgery better than others years later. I’m looking forward to my knee getting stronger in the months ahead!”

Active mom returns to pain-free life following overdue shoulder surgery.

Fate and a torn rotator cuff are changing the lives of countless orthopaedic patients

Daily commute gives active businessman, avid golfer an unexpected ride

Second shoulder work injury jeopardized Kucera’s job, bow hunting pastime

Fractured, displaced humerus is no showstopper for Lewensohn

Uncommon knee condition nearly sidelines All American’s lacrosse future, NCAA national championship

Bailey overcomes injury, orthopaedic surgery to lead Bolingbrook to first state football title

Santi simultaneously rebuilds his shoulder and his house

Repeated shoulder dislocations and surgeries don’t sideline former rugby player Shawn Bastic

A race against time: Frantz’s passion versus prudence

Kmoch “nets” six largemouth bass first day fishing just five months after rotator cuff repair surgery

Susan Swanson’s determination to resume activities after a patella fracture drives need for a new surgical repair procedure

Determination, dedication and arthroscopic surgery return Mary Falck to the slopes and her very active life

Nagel skates through two orthopaedic surgeries, returns to league play but maybe not snowboarding

New ACL arthroscopic procedure by Dr. Steven Chudik lets active kids stay active

“Lower body” hockey injury needed delicate hamstring surgery, lengthy recovery and determination for Edwards to return to activities

Competitive running, bicycling back on energetic executive’s schedule between work, volunteering

Two knee surgeries and a replacement don’t slow down Quirk

Knee replacements, customized care plan have Irwin cheering again from the bleachers and soccer fields

Knee Anatomy

Your knees are the most commonly injured joints in your body. Unlike your shoulder that moves in all directions, your knees appear only to bend and straighten, but actually their movements are much more complex and involve rotation, translation, sliding and rolling.


There are five main ligaments connecting the bones at the knee joint and provide stability when you walk, run and jump. They are the:

  • Anterior cruciate ligament (ACL)
  • Posterior cruciate ligament (PCL)
  • Medial collateral ligament (MCL)
  • Posterolateral corner (PLC) ligaments including the lateral collateral ligament (LCL)
  • Anterolateral ligament (ALL)







Cartilage and Meniscus

The joint surface of the knee is covered with a thin, but durable layer of cartilage over the ends of the femur, tibia, and patella and, along with the meniscus, allows the knee surfaces to articulate, move smoothly—almost frictionless and painlessly along each other. The cartilage lacks a blood supply and receives nutrition from the joint fluid. The meniscus has an unlimited blood supply. Without a blood supply and because of their relatively less active cellular makeup, the cartilage and meniscus do not maintain themselves. The cartilage and meniscus are extremely durable, but in time with “wear and tear” or following injury, they break down, fail, and lead to meniscus tears, cartilage damage, and eventually symptomatic (pain, stiffness, swelling) arthritis (failure of this protective joint surface).



Tendons and Muscles

Tendons also help provide knee joint stability and movement. They act like strong cables connecting your muscles to your bones. These muscle-tendon units cross joints to compress, hold and move joints in specific directions. Like other parts of your knee, they are susceptible to injury and overuse. The two knee tendons most commonly injured are the quadriceps and patellar tendons.






Anterior Cruciate Ligament

The Anterior Cruciate Ligament (ACL) is the most well known of the knee ligaments because it is the one most often injured by athletes. When torn, the ACL does not heal and the knee can be unstable (shifts or gives way), especially during sports that require pivoting, changing direction (cutting), jumping, or landing. About one-half of the people who tear their ACL also tear their meniscus in their knee.

The ACL is one of a pair of cruciate ligaments in the human knee. The other is the Posterior Cruciate (PCL). The two ligaments also are called “cruciform” ligaments because they cross each other forming an “X”. The ACL is a ropelike structure composed of strong collagen fibrils that help maintain the normal relationship of the femur (thigh bone) and the tibia (leg bone) as the knee moves.

ACL Injuries & Conditions

ACL & Associated Meniscus Surgical Procedures

Meet Dr. Steven Chudik

The Patient Experience


Arthroscopic Pediatric Physeal ( Growth Plate)-Sparing ACL Reconstruction

Arthroscopic Assisted ACL Reconstruction


Through his research, Dr. Chudik investigates and pioneers advanced and novel arthroscopic procedures, instruments and implants that change patients’ lives because of better outcomes. His efforts continue to yield scores of patents that will positively affect orthopaedic surgical techniques worldwide.


Novel Procedures

US Patents and Patent Applications

Dr. Steven Chudik continually innovates to create new technology surgical techniques and improve patient care. He also collaborates worldwide with other leaders in the orthopaedic technology industry. Surgeries provide Dr. Chudik with an endless source of ideas to create new, safer, less invasive, and more effective surgical procedures, surgical instruments, and implants. Several of his patents are the direct result of these pioneering endeavors.

  • Method of Minimally Invasive Shoulder Replacement Surgery, U.S. Patent No. 9,445,910, filed September 11, 2006
  • Humeral Implant for Minimally Invasive Shoulder Replacement Surgery. Patent application serial number 11/529,185 case II, filed September 25, 2006
  • Glenoid Implant for Minimally Invasive Shoulder Replacement Surgery, U.S. Patent No. 9,974,658, filed September 25, 2006
  • Humeral Implant for Minimally Invasive Shoulder Replacement Surgery, Serial No.11/525,629, filed September 25, 2006, application published as U.S. Patent App. Pub. 2007/0016305 (A)
  • Guide for Shoulder Surgery, U.S. Patent No. 9,968,459, filed September 29, 2006
  • Suture Pin Device. Patent application serial number 11/529,2006, case XV, filed September 29, 2006
  • Suture Pin Device, Serial No. 11/529,185, filed September 29, 2006, application published as U.S. Patent App. Pub. 2007/0027477 (A)
  • Method of Arthroscopic or Open Rotator Cuff Repair Using An Insertional Guide For Delivering a Suture Pin, U.S. Patent No. 8,540,737, filed October 24, 2006
  • Acromioclavicular Joint Repair System, U.S. Patent No. 9,387,011, filed February 2, 2007
  • Resurfacing Implant for a Humeral Head, Serial No. 13/068,309, filed May 9, 2011, application published as U.S. Patent App. Pub. 2012/0041563 (A)
  • Universal Anterior Cruciate Ligament Repair and Reconstruction System(Cannulated Scalpel), U.S. Patent No. 10,034,674, filed February 2, 2007
  • Resurfacing Implant for a Humeral Head. Patent application serial number 13/068,309 case II (A), filed May 9, 2011
  • Method of Arthroscopic or Open Rotator Cuff Repair Using an Insertional Guide for Delivering a Suture Pin. U.S. Patent Number 8,540,737 B2, issued September 24, 2013
  • Cortical Loop Fixation System for Ligament and Tendon Reconstruction, Serial No. 13/998,567, filed November 12, 2013, application published as U.S. Patent App. Pub. 2015/0134060 (A)
  • Acromioclavicular Joint Repair System. U.S. Patent Number 9,387,011 B2, issued July 12, 2016
  • Method of Minimally Invasive Shoulder Replacement Surgery. U.S. Patent Number 9,445,910 B2, issued September 20, 2016
  • Guide for Shoulder Surgery. U.S. Patent Number 9,968,459 B2, issued May 15, 2018
  • Glenoid Implant for Minimally Invasive Shoulder Replacement Surgery. U.S. Patent Number 9,974,658 B2, issued May 22, 2018
  • Glenoid Implant with Replaceable Articulating Portion, U.S. Patent No. 11,406,505, filed August 20, 2019, issued August 9, 2022
  • Cortical Loop Fixation Method for Ligament and Bone Reconstruction, Serial No. 15/731,719, filed July 24, 2017, application published as U.S. Patent App. Pub. 2019/0021845 (Pending)
  • Humeral Implant and Method, Serial No. 17/532,714, filed November 22, 2021 (Pending), published as U.S. Patent App. Pub. US 2023/0157832
  • Humeral Implant with Cannulation and Method, Serial No. 18/211,396, filed June 19, 2023 (Pending)
  • Glenoid implant with Portal and Method, filed July 2023 (Pending)


An inquisitive nature was the impetus for Dr. Steven Chudik’s career as a fellowship-trained and board-certified orthopaedic surgeon, sports medicine physician, and arthroscopic pioneer for treating ACL injuries. It also led him to design and patent special arthroscopic surgical procedures and instruments and create the Orthopaedic Surgery and Sports Medicine Teaching and Research Foundation (OTRF). Through OTRF, Dr. Chudik conducts unbiased orthopaedic research, provides up-to-date medical information to help prevent sports injuries, and shares his expertise and passion for mentoring medical students in an honors research program. He also serves as a consultant and advisor for other orthopaedic companies and industry.


Areas of Knee Research & Development