foreach ($order->getAllItems() as $item
{

   $orderItemId = $item->getOrderItemId();

   $orderItem = Mage::getModel('sales/order_item')->load($orderItemId);

   $product = Mage::getModel('catalog/product')->load($item->getProductId());

   $html.='<tr height="10">
     <td>'.$item->getSku().'</td>

     <td colspan="3">'.$product->getName().'</td>

     <td>'.(int)$orderItem->getQtyBackordered().'</td>

     <td>'.(int)$item['qty_ordered'].'</td>

   </tr>';
}