LAUSR

Introduction Peripheral neuropathy is an uncommon complication in patients with hemophilia, usually characterized by mononeuropathies, caused by hematoma and compartmental syndrome. The femoral nerve is the most affected, but several other locations have been described. The purpose of this article is to describe four cases of peripheral nerve injury in hemophiliacs comparing with data from the literature. Methods This is a descriptive study, carried out by reviewing the medical record of four hemophiliac patients diagnosed with peripheral nerve injury, performed at a hematology and hemotherapy center in the state of Ceara, Brazil. The literature review was performed on the PubMed platform. All four patients underwent imaging and electromyography studies. The data collected were compared with those of the literature. Results The first case involves a male patient, twenty-nine years old, with a massive hematoma encapsulated in the right thigh (pseudotumor), and associated with paresthesia and a sensory and motor NCS evidencing sciatic nerve involvement. The second case refers to a male patient, forty-seven years old, with chronic hemophilic arthropathy at the right elbow, presenting with tactile-painful hypoesthesia at the medial border of the hand and the fifth finger. The study of nerve conduction revealed ulnar neuropathy at the elbow. In this case, the probable pathophysiology involves the stretching of the ulnar nerve by the pronounced valgus of the elbow. The last two patients were a man of forty-two and a boy of sixteen, both with left iliopsoas hematoma, accompanied by paresthesia in the anterior and lateral aspect of the thigh. The evaluation of the sensory e motor NCS revealed the involvement of the sensory branch of the femoral nerve (saphenous) and acute denervation in quadriceps muscle on needle EMG. Conclusion Even in a limited sample, the four reported cases are in accordance with the literature data. The main publications on the subject indicate the nerves of the lower limbs as the most affected ones, predominating the femoral nerve, followed by the sciatic nerve.