In sickle cell vaso-occlusive crisis, which areas are commonly involved by bone pain?

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Multiple Choice

In sickle cell vaso-occlusive crisis, which areas are commonly involved by bone pain?

Vaso-occlusive crises cause bone pain because sickled red cells block the tiny vessels in bone marrow, leading to ischemia and infarction. Areas with red marrow and rich blood supply are most affected, so pain commonly shows up in the axial skeleton and the large and loaded bones: the back from vertebral marrow infarcts, the long bones of the arms and legs (including knees and other joints), the chest wall from rib infarcts, and the pelvis/abdomen region. A crisis can involve several sites at once, which is why a distribution that includes back, legs, knees, arms, chest, and abdomen best fits the typical pattern. Neck, face, and scalp are not the usual sites for bone-infarction pain in VOC, and pain in the hands alone wouldn’t reflect the common multi-site involvement seen in many crises.

Vaso-occlusive crises cause bone pain because sickled red cells block the tiny vessels in bone marrow, leading to ischemia and infarction. Areas with red marrow and rich blood supply are most affected, so pain commonly shows up in the axial skeleton and the large and loaded bones: the back from vertebral marrow infarcts, the long bones of the arms and legs (including knees and other joints), the chest wall from rib infarcts, and the pelvis/abdomen region. A crisis can involve several sites at once, which is why a distribution that includes back, legs, knees, arms, chest, and abdomen best fits the typical pattern. Neck, face, and scalp are not the usual sites for bone-infarction pain in VOC, and pain in the hands alone wouldn’t reflect the common multi-site involvement seen in many crises.

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