ACL & sports knee injuries

ACL reconstruction and repairand the sports knee

Professor Lee performs the full gold-standard sports-knee repertoire, ACL reconstruction with named grafts, MPFL reconstruction, tibial tubercle transfer and knee arthroscopy, alongside STARR augmented ACL repair. The advance grows out of the fundamentals: the same mastery that delivers a predictable reconstruction is what makes preservation possible when the indication is right.

ACL reconstructionSTARR ACL repairMPFL reconstructionKnee arthroscopyReturn to sport
ACL knee anatomy diagram

A predictable ACL reconstruction and a successful ACL repair come from the same place: deep command of the gold standard. One is not chosen instead of the other, it is chosen for the right knee.

01 · Anatomy

The ACL is not just a strap, it is part of how the knee thinks

The anterior cruciate ligament is the primary restraint to anterior tibial translation and to internal rotation. Lose it, and the knee loses both mechanical stability and a layer of proprioception, the unconscious knowing of where the joint is in space.

That second loss is part of why ACL injuries are so disorienting for athletes. It is not just instability. It is the knee not feeling like the knee.

Athlete with knee pain outdoors
02 · Decision

ACL reconstruction and repair, two right answers

Reconstruction is the gold standard and the right operation for most ACL ruptures. Professor Lee performs the full range of graft choices, refined through the Arthrex Advanced Sports Knee Fellowship. For a defined sub-group, STARR augmented repair adds a second option. Both sit co-equal here; the skill is in matching the operation to the knee.

Reconstruction

The gold standard for over thirty years, and still the right operation for most ACL ruptures: the torn ligament is replaced with a tendon graft (hamstring, patellar tendon or quadriceps), with the graft chosen to the patient and the demands placed on the knee. Professor Lee performs the full range, refined through the Arthrex Advanced Sports Knee Fellowship.

Strengths

  • Long, deep evidence base
  • Predictable graft healing
  • Established rehab pathway

Trade-offs

  • Native ligament removed
  • Donor-site considerations from graft harvest
  • Proprioception is restored, not identical

Repair

For a defined sub-group, a different first question becomes available: can this ligament be preserved and supported to heal? With the right tear pattern, the right timing, and the right technique, STARR augmented repair is a genuine option. It exists because of mastery of reconstruction, not instead of it.

Strengths

  • Preserves the native ACL
  • No graft harvest
  • Potential for more natural proprioception

Trade-offs

  • Specific indications only
  • Timing-sensitive, works best on acute, proximal tears
  • Newer evidence base than reconstruction
03 · Repertoire

The full sports-knee repertoire

ACL surgery is one part of a complete sports-knee practice. Professor Lee performs the established, well-evidenced procedures that most knees need, and it is this command of the conventional repertoire that the augmented techniques are built on.

Gold standard

ACL reconstruction (hamstring, patellar tendon or quadriceps graft)

Reconstruction of the anterior cruciate ligament using a tendon graft, with named graft options selected to the patient and the demands placed on the knee.

Gold standard

Medial patellofemoral ligament (MPFL) reconstruction

Reconstruction of the MPFL to restore patellar stability after recurrent patellar dislocation or patellofemoral instability.

Gold standard

Tibial tubercle transfer

Realignment of the tibial tubercle to offload the patellofemoral joint and correct maltracking in anterior knee pain and patellar instability.

Gold standard

Synovial plica excision

Arthroscopic excision of a symptomatic synovial plica causing mechanical knee symptoms.

Gold standard

Diagnostic and therapeutic knee arthroscopy

Keyhole assessment and treatment of the joint, used to diagnose and address cartilage, meniscal and synovial pathology under direct vision.

Professor Lee's advance

STARR ACL repair

Single Treatment ACL Regenerative Repair, augmented ACL repair inspired by BEAR ACL repair, enhanced with collagen scaffold and cell augmentation to eliminate the need for graft harvesting in suitable repair-eligible cases.

04 · STARR

STARR ACL Repair, preserving what is still there

STARR, Suture-Tape Augmented ACL Repair, is the technique Professor Lee has helped develop, teach, and refine. The principle is simple to state and technically demanding to execute: the native ligament is preserved, supported by a high-strength internal scaffold, and given the conditions to heal.

STARR is not a replacement for reconstruction. It is a different first question. For the right patient, an acute injury, a proximal tear pattern, viable ligament tissue, it offers something reconstruction cannot: the patient's own ACL, still in place, healing.

Suture-Tape Augmented Repair

The native ligament is preserved and reinforced with a high-strength suture tape that acts as an internal scaffold while the ligament biology heals.

Timing-driven

STARR is at its best in acute, proximal ACL tears where the ligament tissue itself is still viable. The first conversation matters most.

Sport-aware

Designed for patients who do not just need a stable knee, they need a knee that responds, accelerates, decelerates, and pivots the way a sporting body asks it to.

Biologically supported

Combined where appropriate with biological optimisation strategies that help the ligament heal in the environment it is being asked to heal in.

STARR ACL Repair technique
ACL repair surgical procedure
05 · Combined

Meniscus and combined injuries

Pure isolated ACL tears are uncommon. Most ACL injuries arrive with meniscus involvement, sometimes with cartilage damage, occasionally with collateral ligament injury. The decision is never about the ACL alone.

Where meniscus repair can be combined with ACL repair or reconstruction, Professor Lee's default position is preservation, not removal. The long-term joint depends on it.

  • ACL plus meniscus tears are the rule, not the exception
  • Repairing both at once changes the biomechanical trajectory of the knee
  • Removing a meniscus to "make the ACL surgery easier" is rarely the right answer
  • Combined-injury planning sits at the heart of joint-preservation orthopaedics
Meniscus anatomy closeup
06 · Return

Return to sport, built, not promised

Time-based protocols are how clinicians manage their calendars. Criteria-based progression is how patients actually get back to the field, the pitch, the trail. The two are very different things.

Stage 01 · 0-6 weeks

Protect and calm

Swelling control, gentle range, neuromuscular reactivation. The repair is healing biology; do not test it.

Stage 02 · 6-12 weeks

Strength foundation

Quadriceps, hamstrings, glutes, the muscle envelope that supports the ligament for the rest of its life.

Stage 03 · 3-6 months

Loaded movement

Running, jumping, change-of-direction, re-teaching the brain to trust the knee under sporting load.

Stage 04 · 6-9 months

Return to sport

Sport-specific drills, criteria-based progression. Time alone is never the criterion.

07 · Biology

Biological recovery and healing

Ligament biology is unforgiving in some respects and surprisingly adaptable in others. Sleep, nutrition, smoking status, systemic inflammation, and the rehab environment all affect how a repaired or reconstructed ligament behaves at six months, and at six years.

Where Professor Lee's broader systems-thinking practice applies, recovery is planned as part of the operation, not as something that happens to the patient afterwards. Read about recovery optimisation in detail.

FAQ

Common questions

For some tear patterns, proximal avulsion-type injuries, addressed early, in patients with good underlying biology, the native ACL can be preserved and supported to heal. That is what STARR is designed for.

For mid-substance ruptures, chronic tears, or where the ligament tissue is no longer viable, reconstruction with a graft remains the right answer. The skill is in honestly identifying which group the patient is in.

No, and any clinician saying so is overselling. Repair is better for the right patient. Reconstruction is better for many others. The right operation depends on the tear, the timing, the patient's sport, and the joint as a whole.

Typical return to full sport is 6-9 months. That number sits inside a wide individual range. What changes outcomes is not chasing a faster timeline, it is meeting criteria-based milestones at each stage rather than calendar-based ones.

Usually not, in the STARR-specific sense, the window for repair-as-preservation is narrower than people realise. But chronic ACL deficiency still has a clear specialist pathway, including modern reconstruction options that account for what has happened to the joint in the interim.

The ACL conversation is no longer one-size-fits-all

Specialist input on whether the ligament can still be saved

STARRrepairreconstructionreturn to sport

Timing matters. The first specialist conversation matters most. If your ACL injury is recent, the option for repair-as-preservation may still be on the table, but the window is real.

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