Should a patient 22 days after left anterior cruciate ligament reconstruction using a peroneus longus autograft fixed with bio‑absorbable screws undergo supervised rehabilitation rather than no rehabilitation?

Supervised Rehabilitation Should Be Implemented After ACL Reconstruction

A patient 22 days post-ACL reconstruction with peroneus longus autograft should undergo supervised rehabilitation rather than no rehabilitation, as structured rehabilitation programs are essential for optimizing functional recovery, strength gains, and safe return to activity.

Why Supervised Rehabilitation is Critical

The 2023 Aspetar clinical practice guidelines 1 provide the most comprehensive and recent evidence framework. These guidelines establish that immediate knee mobilization and progressive strength/neuromuscular training should be used during ACL postoperative rehabilitation 2. At 22 days post-surgery, this patient is in a critical window where specific interventions have been proven beneficial:

Evidence-Based Benefits at This Timeframe

Early mobilization and exercise initiation (weeks 2-3) demonstrate clear advantages:

• Isometric quadriceps exercises (static contractions, straight leg raises) can be safely prescribed during the first 2 postoperative weeks and confer advantages for faster recovery of knee range of motion at 1 month without compromising stability 1

• Starting leg press at 3 weeks (which this patient has just reached) can improve subjective knee function and functional outcomes 1

• Eccentric cycle ergometer training initiated at 3 weeks results in greater strength gains, better daily activity level, and greater quadriceps muscle hypertrophy compared to starting at 12 weeks, with beneficial effects persisting 1 year after ACLR 1

Supervised vs. Unsupervised: The Evidence

While the 2023 guidelines acknowledge that unsupervised exercise may be followed by patients who cannot afford supervised rehabilitation, have reduced access, or are highly motivated and compliant 1, this represents a pragmatic concession rather than an optimal recommendation. The evidence favors supervision:

Recent research demonstrates supervision advantages:

• A 2019 study showed supervised physiotherapy resulted in significantly higher return to sports activity (Tegner Scale: supervised=6 vs. non-supervised=5, p=0.003) and better quality of life (KOOS QOL: supervised=90 vs. non-supervised=74, p<0.001) at 12 months 3

• A 2015 study found fully compliant patients (>15 supervised sessions) had 18.5 times greater odds of successful return to sport compared to non-compliant patients (OR 18.5,95% CI 1.9-184.5, p=0.013) 4

• A 2026 systematic review found trends for higher knee strength, improved performance testing, and greater self-reported outcomes with longer duration of supervised rehabilitation, recommending at least 6 months of supervision 5

However, a 2021 meta-analysis provides nuance: Very-low to low-certainty evidence suggests intensive supervised rehabilitation is not superior to less supervised rehabilitation for self-reported function, sports participation, strength, or range of motion 6. A 2025 meta-analysis similarly found home-based protocols comparable for functional recovery, though supervised approaches slightly enhanced muscle strength, particularly hamstring strength (SMD = -0.48, p=0.02) 7.

Practical Implementation at 22 Days Post-Op

At this specific timepoint, the patient should be engaged in:

1. Closed kinetic chain exercises (prioritized to mitigate patellofemoral pain risk) 1, 2
2. Progressive leg press exercises (just entering the 3-week window) 1
3. Isometric and progressive quadriceps strengthening 1, 2
4. Neuromuscular re-education training in addition to muscle strengthening 2
5. Full weight-bearing as tolerated (should already be implemented) 2

Open kinetic chain exercises (90-45°) can be added as early as 4 weeks (approaching soon for this patient), but without extra weight in the first 12 weeks for hamstring grafts 2. Given this patient has a peroneus longus graft (not hamstring), this restriction may not apply, though caution is warranted as evidence specific to peroneus longus grafts is limited.

Critical Caveats

Graft-specific considerations: The evidence predominantly addresses hamstring and bone-patellar tendon grafts. Peroneus longus autografts are less studied. A 2026 study found all-inside ACLR using partial PLT autograft achieved earlier mobilization and return to work than conventional hamstring grafts 8, suggesting this graft may tolerate aggressive rehabilitation, but extrapolation requires caution.

Monitoring requirements: Whether supervised or unsupervised, patients must be monitored for:

• Anterior knee pain (particularly with open kinetic chain exercises) 1
• Extension deficits and range of motion limitations 2
• Proper exercise execution and progression 1

Minimum supervision model: If intensive supervision is not feasible, the guidelines support a minimally supervised model for highly motivated patients 1, 2, but this requires:

• Individually prescribed programs
• Regular monitoring of execution and progression
• Surveillance for adverse events

The Bottom Line

For this 22-day post-op patient, supervised rehabilitation is strongly recommended to ensure proper exercise progression, technique, and monitoring during this critical early strengthening phase. The evidence shows supervision improves return to sport rates and quality of life outcomes 3, 4, with particular benefits for strength development 7. If supervision is absolutely not feasible due to access or financial constraints, a minimally supervised program with regular check-ins is acceptable only if the patient demonstrates high motivation and compliance 1, 2.