Multiligament knee injuries (MLKIs) represent rare yet severe orthopedic emergencies. These complex injuries involve the disruption of at least two of the four primary knee ligaments. Consequently, successful multiligament knee injury management depends on a rapid diagnosis and a systematic clinical approach. Because high-energy trauma often causes these injuries, surgeons must frequently manage associated neurovascular complications.

Clinicians should prioritize the patient's vascular status immediately upon arrival. Notably, vascular injuries occur in up to 18% of cases. Although palpable pulses provide some reassurance, they do not definitively exclude significant arterial damage. Therefore, surgeons should measure the ankle-brachial index (ABI) for all suspected cases. If the ABI measures less than 0.9, the patient requires an urgent computed tomography (CT) angiogram. Furthermore, practitioners must conduct serial neurovascular examinations for at least 48 hours to identify any delayed thrombosis.

Best Practices for Multiligament Knee Injury Management

Modern treatment protocols use the Schenck classification to guide surgical decisions. Currently, most specialists recommend operative management for active individuals to restore joint stability. While conservative care remains an option for sedentary patients, it typically results in inferior functional outcomes. Regarding the timing of intervention, early reconstruction within three weeks generally provides superior clinical scores. However, some surgeons prefer staged procedures if severe soft tissue swelling complicates the initial presentation. Additionally, proper rehabilitation remains crucial for preventing joint stiffness and ensuring long-term recovery.

Frequently Asked Questions

Is a normal pulse enough to rule out a vascular injury?

No, a normal pulse does not exclude vascular damage. Research shows that vascular injuries can exist despite palpable pulses. Therefore, clinicians must perform an ABI measurement and maintain a low threshold for CT angiography if they suspect arterial involvement.

What is the benefit of early surgery in MLKI cases?

Early surgery, typically performed within three weeks, often results in better functional outcomes and higher Lysholm scores. It allows for the anatomical repair or reconstruction of tissues before significant scarring occurs, though surgeons must weigh this against the risk of arthrofibrosis.

Disclaimer: This content is for informational and educational purposes only, and should not be considered medical advice or a substitute for professional consultation with a healthcare provider. Refer to the latest local and national guidelines for clinical practice.

References

1. Hantes M et al. Multiligament-injured knee: what the general orthopedic surgeon should know. EFORT Open Rev. 2026 May 01. doi: 10.1530/EOR-2026-0053. PMID: 42065223.

2. Sleem B, et al. Management and reconstruction strategies for multiligament knee injuries: Advances in diagnosis, surgical techniques, and rehabilitation. J Arthrosc Surg Sports Med. 2025;6:112-124.

3. Murray IR, et al. Multiligament knee injury (MLKI): an expert consensus statement on nomenclature, diagnosis, treatment and rehabilitation. Br J Sports Med. 2024.