ACL Tear Management Without Surgery In Ospina Medical – New York, NY

Knee joint anatomy showing ACL

Two cruciate ligaments, named for their cross-like shape, are located inside the knee joint and help provide stability. These ligaments intersect to form an “X”—with the anterior cruciate ligament (ACL) positioned at the front and the posterior cruciate ligament (PCL) at the back.

The ACL helps prevent the tibia (shin bone) from moving too far forward, while the PCL helps prevent it from shifting backward.

ACL surgery is not typically performed on an emergency basis unless there is severe damage to surrounding structures, marked instability, or significant pain. In cases where some joint stability remains, adults may be able to delay surgical intervention for several weeks.

For younger athletes, the timeframe may be shorter, often influenced by the goal of returning to sports as soon as possible. In some situations, starting with physical therapy may support recovery. If improvement is not achieved through conservative care, less invasive options, such as Perc-ACLR, may be considered before moving forward with surgery.

Some studies have indicated that ACL sprains and even certain complete tears may have the potential to heal without surgical intervention, especially when supported by interventional orthopedic procedures like Perc-ACLR. These approaches use the body’s own repair mechanisms and do not involve surgery.

When the body shows the ability to support natural healing of the ACL, it raises an important question: Is surgery always necessary?

ACL sprains, tears, and ruptures are terms that are often used interchangeably, as they all refer to injury of the ligament. Medically, knee ligament injuries are categorized as “sprains” and classified by severity.

• Grade 1 Sprains: The ligament is slightly stretched and may have minor damage, but continues to provide stability to the knee joint.
• Grade 2 Sprains: This indicates a moderate injury in which the ligament is partially torn or more significantly stretched, leading to some looseness in the joint.
• Grade 3 Sprains: Commonly referred to as a complete tear, this type of injury involves the ligament being fully torn into two sections, resulting in knee instability.

The term ACL rupture is typically used to describe a complete tear, often involving full-thickness damage, potential deformity, or retraction of the ligament, characteristics associated with Grade 3 injuries.

Statistics show that only about half of athletes who undergo ACL reconstruction regain full function after rehabilitation and return to their previous level of athletic activity. While the procedure may restore joint stability, many individuals do not recover normal biomechanics or proprioception comparable to the uninjured knee. Some may also experience ongoing functional limitations in daily life.

Because of this variability—and the potential for diagnostic errors or alternative treatment options—it is advisable to seek a second opinion before proceeding with surgery. ACL reconstruction carries several documented risks, and many individuals may be candidates for less invasive approaches.

• Complications following surgery include anterior knee pain or discomfort during kneeling (affecting approximately 17% of adults), graft failure and loss of joint stability (reported in 5% to 29% of cases, with higher risk in younger patients). Additional potential complications include knee stiffness or limited range of motion (~5%), painful surgical hardware (~6%), infection (~1%–2%), and patellar tendon rupture or patellar fracture, particularly when bone-to-bone grafts are used.^3-6
• The increase in ACL surgeries among youth, driven by rising participation in high-level competitive sports, has raised concerns. Research indicates that younger individuals may face a greater risk of postsurgical complications. For those who wish to preserve the body’s original structures, a nonsurgical approach such as Perc-ACLR may be worth exploring.
• A large-scale analysis of 160 clinical studies found that teens undergoing ACL reconstruction experienced a higher incidence of complications, including growth disturbances, skeletal changes, and a greater likelihood of rerupture requiring revision surgery.⁷
• Additionally, a 2010 study from Sweden reported that 60% of athletes (average age 26) who pursued structured physical therapy instead of surgery did not require ACL replacement and were still able to participate in sports.⁸

ACL injuries can be categorized in several ways, but for the purposes of interventional orthobiologic procedures, they are typically grouped into three main types: partial-thickness tears, full-thickness non-retracted tears, and full-thickness retracted tears.

Both partial-thickness and full-thickness non-retracted ACL tears may be candidates for image-guided procedures using the Regenexx Perc-ACLR protocol. These treatment options aim to support the body’s natural repair response and may offer an alternative to surgery. In contrast, full-thickness retracted tears are generally more severe and often require surgical reconstruction to restore function.

1. Partial-Thickness ACL Tear:
   This type of tear does not extend completely through the ligament. Imaging will typically show that a portion of the ACL remains intact and connected.
2. Full-Thickness Non-Retracted ACL Tear:
   In this case, the ligament is fully torn, but the two ends have not separated. The structure remains in place, even though the tear extends across the full width.
3. Full-Thickness Retracted ACL Tear:
   This type of injury involves a complete tear in which the ends of the ligament have separated or retracted, similar to how a stretched rubber band might snap back. These cases usually require surgical intervention.

ACL tears