In the study by Widuchowski et al(14), some type of chondral lesion was found in 60% of the knees operated, of which 67% were classified as osteochondral or chondral lesions, 29% as osteoarthritis, 2% as osteochondritis dissecans and 1% as other types.
Your account balance, also referred to as your current balance, is the total balance on your account, including any activity since your last statement. That last bit of the definition is probably the best way to differentiate the pair.
A current account deficit represents a negative net sales abroad. Developed countries, such as the United States, often run current account deficits, while emerging economies often run current account surpluses. Countries that are very poor tend to run current account deficits.