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Emergency and Acute Medicine – Tibial Plateau Fracture
Tibial plateau fractures are serious intra-articular injuries involving the proximal tibia that can compromise knee stability and function. These fractures occur when axial loading is combined with valgus or varus forces, leading to splitting or depression of the articular surface. They are commonly classified using the Schatzker system, which ranges from low-energy lateral plateau fractures (types 1–3) to high-energy bicondylar and comminuted fractures (types 4–6), the latter often associated with significant soft tissue, ligamentous, and neurovascular injuries.
The mechanism of injury varies with fracture type. Low-energy injuries, such as those seen in sports or minor trauma, often produce lateral plateau fractures, particularly in younger individuals or those with relatively strong bone. In contrast, high-energy mechanisms such as motor vehicle collisions or falls from height tend to produce more severe medial or bicondylar fractures and are frequently associated with complications such as popliteal artery injury, peroneal nerve damage, and compartment syndrome.
Clinically, patients present with knee pain, swelling, and inability to bear weight. Examination may reveal joint effusion, limited range of motion, tenderness over the proximal tibia, and possible deformity or instability of the knee. A thorough neurovascular examination is essential, particularly in high-energy injuries, as vascular compromise or nerve injury can have limb-threatening consequences. Findings such as diminished pulses, sensory deficits, or weakness in ankle dorsiflexion should raise concern for serious complications.
Radiographic evaluation begins with plain X-rays, including specialized views to assess the tibial plateau and joint surface. Findings may include fracture lines, depression of the articular surface, or lipohemarthrosis, which is highly suggestive of an intra-articular fracture. Computed tomography is often used to better characterize fracture patterns, while MRI may be helpful in identifying associated ligamentous or meniscal injuries. In cases of suspected vascular injury, arteriography may be indicated but should not delay urgent intervention.
Initial management focuses on stabilization, pain control, and prevention of further injury. The affected limb should be immobilized in a long leg splint with the knee in extension, and the patient should remain non–weight bearing. Ice and elevation are important to reduce swelling. In cases of open fractures, prompt antibiotic administration, tetanus prophylaxis, and surgical consultation are required.
Stable, minimally displaced fractures without ligamentous injury may be managed conservatively with immobilization and close follow-up. However, unstable fractures, those with significant displacement, or injuries associated with vascular compromise or compartment syndrome require urgent orthopedic evaluation and often surgical intervention. High-energy injuries may also require hospital admission for monitoring due to the risk of delayed compartment syndrome.
A key clinical consideration is the potential for associated popliteal artery injury in high-energy mechanisms, which can be limb-threatening if missed. Additionally, tibial plateau fractures can be subtle on initial imaging, and a high index of suspicion is necessary, particularly when clinical findings are disproportionate to radiographic results.
Tibial plateau fractures are serious intra-articular injuries involving the proximal tibia that can compromise knee stability and function. These fractures occur when axial loading is combined with valgus or varus forces, leading to splitting or depression of the articular surface. They are commonly classified using the Schatzker system, which ranges from low-energy lateral plateau fractures (types 1–3) to high-energy bicondylar and comminuted fractures (types 4–6), the latter often associated with significant soft tissue, ligamentous, and neurovascular injuries.
The mechanism of injury varies with fracture type. Low-energy injuries, such as those seen in sports or minor trauma, often produce lateral plateau fractures, particularly in younger individuals or those with relatively strong bone. In contrast, high-energy mechanisms such as motor vehicle collisions or falls from height tend to produce more severe medial or bicondylar fractures and are frequently associated with complications such as popliteal artery injury, peroneal nerve damage, and compartment syndrome.
Clinically, patients present with knee pain, swelling, and inability to bear weight. Examination may reveal joint effusion, limited range of motion, tenderness over the proximal tibia, and possible deformity or instability of the knee. A thorough neurovascular examination is essential, particularly in high-energy injuries, as vascular compromise or nerve injury can have limb-threatening consequences. Findings such as diminished pulses, sensory deficits, or weakness in ankle dorsiflexion should raise concern for serious complications.
Radiographic evaluation begins with plain X-rays, including specialized views to assess the tibial plateau and joint surface. Findings may include fracture lines, depression of the articular surface, or lipohemarthrosis, which is highly suggestive of an intra-articular fracture. Computed tomography is often used to better characterize fracture patterns, while MRI may be helpful in identifying associated ligamentous or meniscal injuries. In cases of suspected vascular injury, arteriography may be indicated but should not delay urgent intervention.
Initial management focuses on stabilization, pain control, and prevention of further injury. The affected limb should be immobilized in a long leg splint with the knee in extension, and the patient should remain non–weight bearing. Ice and elevation are important to reduce swelling. In cases of open fractures, prompt antibiotic administration, tetanus prophylaxis, and surgical consultation are required.
Stable, minimally displaced fractures without ligamentous injury may be managed conservatively with immobilization and close follow-up. However, unstable fractures, those with significant displacement, or injuries associated with vascular compromise or compartment syndrome require urgent orthopedic evaluation and often surgical intervention. High-energy injuries may also require hospital admission for monitoring due to the risk of delayed compartment syndrome.
A key clinical consideration is the potential for associated popliteal artery injury in high-energy mechanisms, which can be limb-threatening if missed. Additionally, tibial plateau fractures can be subtle on initial imaging, and a high index of suspicion is necessary, particularly when clinical findings are disproportionate to radiographic results.
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