S85.182

Clinical Causes: Trauma from a vehicle accident or fall resulting in blunt or penetrating injury Sports injuries, especially during contact sports or mishaps resulting in direct impact Surgical complications involving the lower limb Piercing injuries such as bites or gunshot wounds Crushing injuries from heavy objects falling or being rolled over the leg Iatrogenic injuries during medical procedures or interventions

Key Symptoms: Severe pain in the affected leg, especially along the inner side where the posterior tibial artery runs Swelling and tenderness around the ankle or lower leg Discoloration of the skin—pale, bluish, or cold to touch due to compromised blood flow Reduced or absent pulse in the posterior tibial artery, detectable with a Doppler ultrasound Numbness or tingling sensations in the foot or toes Possible visible bleeding or bleeding under the skin (hematoma) Weakness in the foot muscles, leading to difficulty moving or walking

Diagnosis Path: Assessment typically begins with a physical examination focusing on circulation signs, such as checking for pulses and skin temperature. Imaging tests are essential to confirm the injury, including: - Ultrasound Doppler to evaluate blood flow and locate the injury - Angiography, a special imaging technique using contrast dye to visualize the artery and extent of damage - MRI or CT scans if additional soft tissue or bone damage is suspected Laboratory tests are generally not specific but may be conducted to rule out associated injuries or conditions such as infection or clotting disorders.

Treatment Protocols: Managing an injury to the posterior tibial artery involves urgent medical intervention to restore blood flow and prevent tissue damage. Treatment options include: - Surgical repair or reconstruction, such as vessel suturing, patching, or bypass procedures - Endovascular techniques like angioplasty or stent placement in suitable cases - Conservative measures, including compression and immobilization, are usually secondary and depend on injury severity - Antibiotics if there is an associated wound infection - Pain management to ease discomfort - Monitoring and follow-up to assess blood flow restoration and detect potential complications In some cases, additional procedures may be required to address tissue damage or restore limb function, emphasizing the importance of timely and appropriate medical care.