In this disease, the number of osteoclasts may be increased or reduced. As a result, bone formation persists while its resorption fails. This condition gives rise to an excessive bone formation. However, the bone pathology of the sufferers reveals that parathyroid hormones, alkaline phosphatase, calcium and phosphate levels remain unaffected regardless of the severity of disease. The major symptoms of osteopetrosis include anaemia, shortening of bones,...