Ischemia below the calf

Introduction Ischemia below the calf: The clinical manifestations of radial artery injury are mainly the ischemia of the lower leg and the weakening (or disappearance) of the dorsal artery of the foot.

Cause

(1) Causes of the disease

Stab wounds of the supracondylar fracture of the femur, strong violent knee dislocation, comminuted ankle fracture and sharp stab wound can cause injury.

(two) pathogenesis

The artery originates from the lower edge of the adductor myotube, and continues with the femoral (shallow) artery. It descends to 5-8 cm below the tibial plateau and is divided into the anterior tibial artery and the radial artery. Because the radial artery and the upper part of the femoral condyle are close together, the clinically common fracture of the supracondylar femur, due to the contraction of the distal end of the fracture caused by the contraction of the posterior gastrocnemius muscle, causes arterial injury to become a concern. In addition, traumatic knee dislocation, comminuted ankle fractures and blunt trauma to the axillary fossa are another common clinical cause. It is also necessary to be vigilant against iatrogenic factors, especially in the treatment of femoral condyle fractures.

an examination

Related inspection

Blood routine electromyogram

Similar to the clinical symptoms of femoral artery involvement, the ischemic and dorsiflexion of the dorsal artery is weakened (or disappeared); if it is caused by supracondylar fracture, it has specific signs of the fracture, including flexion of the lower thigh. Malformation, elastic fixation, severe pain and limited mobility. When the blood supply of the calf is insufficient, hemorrhagic peripheral neuritis may occur and there are symptoms such as pain, allergies and numbness.

Differential diagnosis

Differential diagnosis

To be differentiated from limb embolism. Limb embolism refers to a pathological process in which the embolus is detached from the heart or the proximal arterial wall, or enters the artery from the outside, pushed to the distal side by the blood flow, and blocks the blood flow of the artery, resulting in ischemia or even necrosis of the limb or internal organs. Pain in the affected limb, pale, distant arterial pulsation disappeared, cold, numbness and movement disorders.

Similar to the clinical symptoms of femoral artery involvement, the ischemic and dorsiflexion of the dorsal artery is weakened (or disappeared); if it is caused by supracondylar fracture, it has specific signs of the fracture, including flexion of the lower thigh. Malformation, elastic fixation, severe pain and limited mobility. When the blood supply of the calf is insufficient, hemorrhagic peripheral neuritis may occur and there are symptoms such as pain, allergies and numbness.

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