This exceptional outcome does not overturn current practice — but demands honest reflection on potential copers, shared decision-making, and whether we accept conservative failure as readily as surgical failure.

Keywords: ACL injury | coper | shared decision-making

Introduction

On 16 February 2026, 103 days after confirmed complete ACL rupture, an 18-year-old won Olympic bronze in freestyle ski Big Air without surgical reconstruction, classified as a ‘potential coper’ (Big Air final, run 3, 94.5 pts Italian link). Non-operative management was neither a courageous philosophical stance, nor a miracle, nor a manifesto against surgery. We report this case not as a template, but as a demonstration of a principle well established in the literature yet insufficiently integrated into clinical practice: copers exist. This is not a new scientific discovery — and it is not the conclusion of our reasoning. It is where it begins.

What the literature has long shown us: the dogma of biomechanical stability

A simple equation has long dominated our field: ACL rupture means mechanical instability; instability means surgery. This logic is intuitive but incomplete. The scientific literature, including the KANON trial[1]  the Delaware–Oslo cohorts [2] and the pioneering observations of Noyes in 1983[3],      has long suggested that in selected cases of isolated ACL rupture, the neuromuscular system can effectively compensate for the missing ligament. This Olympic performance provides a powerful real-world proof of concept in a sport defined by extreme rotational loads and high-impact landings.

103 days: a forced choice and the coper profile

Immediate ACL reconstruction would have meant one outcome only: withdrawal from the road to an Olympic dream. So, non-operative management was the only realistic path — undertaken exclusively because all established early screening criteria for ‘potential coper’ classification were met within days of injury (Table 1). 

FACTOR	FINDING	CLINICAL WEIGHT
MRI (Magnetic Resonance Imaging)	Isolated ACL, minimal notch sign, no meniscal/chondral lesion	Low secondary injury risk → favours non-operative pathway
Lachman	+2, no end-point	Marked laxity — yet functional compensation achieved. Laxity ≠ instability
Pivot shift	+1	Mild rotational instability; pivoting sport demands close monitoring
Effusion	Minimal	Preserved neuromuscular activation capacity
Giving-way	Absent (early)	No functional instability; consistent with coper profile
Perturbation test	Passed	Neuromuscular compensation confirmed; ‘potential coper’ classification justified

Table 1. Early screening criteria for ‘potential coper’ classification applied in this case, adapted from the Delaware-Oslo ACL cohort classification[2] and the criteria described by Noyes et al[3].

What followed was a rigorous process of shared decision-making, working through every phase with the athlete and coaches — from the injury to the final jump at the Olympic venue. There was no Plan B. There was only the work. All together.

The surgical decision and the honest question it raises

Despite the Olympic medal, the athlete underwent ACL reconstruction two weeks later. This does not deny her demonstrated coping ability. It reflects the reality of a long competitive career and the need to protect meniscal and chondral structures over time. A principle worth stating plainly: the higher the functional demands and the longer the competitive horizon, the harder it is to remain a long-term coper. In 2026, however, the scientific community must accept an uncomfortable truth: we lack definitive data to assert that reconstruction is the optimal long-term choice [4-11] .

An uncomfortable but necessary question

We readily accept surgical failures — graft rupture, revision surgery, early osteoarthritis — with professional resignation. This case forces us to ask:

• Are we equally prepared to accept failure of conservative management with the same intellectual honesty?
• Are our decisions driven purely by biology — or by a cultural reluctance to trust a neuromuscular system that just performed at Olympic level?

Conclusion

Coper screening tools need refining, and we need prospective trials in elite cohorts with long-term follow-up. But more than that: conservative failure deserves the same scrutiny we already give surgical failure — not less.

The future of sports traumatology may lie in our ability to optimise the “software” — the brain and neuromuscular system — when the “hardware” fails. As Alessandro Manzoni wrote: “Fu vera gloria? Ai posteri l’ardua sentenza.” For now, let us celebrate a memorable story of shared resilience — and use it to ask better questions.

Patient consent: Written informed consent was obtained from the athlete for publication of this case.

Authors & Affiliations

Gabriele Thiébat1,2,6 , Lars Engebretsen 3,4, Marco Delladio 2, Leonardo Pegoretti 2 , Federico Bristot 5, Andrea Panzeri 1,2,6

1 Sport Trauma and Research Centre, Istituto Clinico San Siro, Milan, Italy

2 Federazione italiana sport invernali

3 Oslo Sports Trauma Research Center

4 Norwegian School of Sports Sciences

5 Juventus FC, Turin, Italy

6 IRCCS Ospedale Galeazzi Sant’ambrogio, Milan, Italy

Corresponding author: Gabriele Thiébat — gthiebat@gmail.com

Competing Interests

None declared.

Declaration of AI use

Generative AI was used only to improve the fluency and clarity of the English language in this manuscript. It was not used to generate ideas, data, analysis, or conclusions, all of which are entirely the authors’ own.

References

1. Frobell RB, et al. A randomized trial of treatment for acute anterior cruciate ligament tears. N Engl J Med. 2010;363(4):331-42.
2. Thoma LM, et al. Coper Classification Early After ACL Rupture: The Delaware-Oslo ACL Cohort Study. Am J Sports Med. 2019;47(4):807-814.
3. Noyes FR, et al. The symptomatic ACL-deficient knee. Parts I & II. J Bone Joint Surg Am. 1983;65(2):154-174.
4. Wiksa Astrayana GA, Wien Aryana GN. Managing ACL Injuries: A Comprehensive Systematic Review and Meta-Analysis of Conservative vs. Operative Treatment Approaches. Orthop J Sports Med. 2024 Oct 24;12 (10 suppl3).
5. Meuffels DE, Favejee MM, Vissers MM, Heijboer MP, Reijman M, Verhaar JA. Ten year follow-up study comparing conservative versus operative treatment of anterior cruciate ligament ruptures. A matched-pair analysis of high level athletes. Br J Sports Med. 2009 May;43(5):347-51.
6. Papaleontiou A, Poupard AM, Mahajan UD, Tsantanis P. Conservative vs Surgical Treatment of Anterior Cruciate Ligament Rupture: A Systematic Review. Cureus. 2024 Mar 20;16(3).
7. van Yperen DT, Reijman M, van Es EM, Bierma-Zeinstra SMA, Meuffels DE. Twenty-Year Follow-up Study Comparing Operative Versus Nonoperative Treatment of Anterior Cruciate Ligament Ruptures in High-Level Athletes. Am J Sports Med. 2018 Apr;46(5):1129-1136.
8. Filbay SR, Roemer FW, Lohmander LS, Turkiewicz A, Roos EM, Frobell R, Englund M. Evidence of ACL healing on MRI following ACL rupture treated with rehabilitation alone may be associated with better patient-reported outcomes: a secondary analysis from the KANON trial. Br J Sports Med. 2023 Jan;57(2):91-98.
9. Filbay SR, Bullock G, Russell S, Brown F, Hui W, Egerton T. No Difference in Return-to-Sport Rate or Activity Level in People with Anterior Cruciate Ligament (ACL) Injury Managed with ACL Reconstruction or Rehabilitation Alone: A Systematic Review and Meta-Analysis. Sports Med. 2025 Sep;55(9):2191-2205.
10. Frobell RB, Roos HP, Roos EM, et al. Greater proportion of patients report an acceptable symptom state and better quality of life after ACL reconstruction compared with non-surgical treatment: a cross-sectional study from the Swedish National Knee Ligament Registry up to 10 years. Br J Sports Med. 2022;56(15):862-869.
11. Onobun DE, Orji C, Ojo EO, Adebisi AA, Igbokwe K, Sehmar R, Ononye R, Aksaray O, Oputa S, Nmereole CS. Exploring the Efficacy of Conservative Management Versus Surgical Intervention in Anterior Cruciate Ligament (ACL) Injuries: Insights Into Reinjury Rates, Quality of Life, and Long-Term Outcomes. Cureus. 2024 Nov 29;16(11):e74718.

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