Vascular Injuries following Knee Dislocation.

Area of Science:

• Orthopedic Surgery
• Trauma Surgery
• Vascular Surgery

Background:

• Knee dislocations (KDs) result from high-energy trauma and pose a significant risk of limb-threatening vascular injury.
• Popliteal artery injury is a critical concern in KDs, with reported rates varying significantly.
• Traditional management often involved mandatory emergent arteriography, but this is being re-evaluated.

Purpose of the Study:

• To review the current clinical practice for evaluating vascular status in patients with knee dislocations.
• To assess the safety and efficacy of a clinical examination-first algorithm combined with advanced imaging.

Main Methods:

• Clinical practice review of knee dislocation management.
• Emphasis on thorough clinical examination for vascular assessment.
• Selective use of advanced imaging modalities like CT angiography and MR angiography when indicated by clinical findings.

Main Results:

• Contemporary studies report popliteal artery injury rates between 7-15%.
• Selective arteriography has been suggested as a safe alternative to mandatory emergent arteriography.
• Advanced imaging modalities offer alternatives to conventional arteriography, which has a higher complication rate and cost.

Conclusions:

• An algorithm prioritizing clinical examination followed by advanced imaging for abnormalities is a safe and prudent policy for managing knee dislocations.
• This approach balances diagnostic accuracy with patient safety and resource utilization.
• It challenges the necessity of routine emergent arteriography in all KD cases.