Is It True That Madonna Has Arthritis?

Madonna probably has not got arthritis, although some of her critics may feel that this would be retribution for some of her antics over the years.  However, she may have pulled a muscle recently whilst exercising.
This rumour began when Madonna was seen put shopping and carrying a pack of Voltarol which claims to provide 'penetrating relief for pain and inflammation'.  Soon this was transformed by some of the British media into 'Madonna has arthritis'.
Whilst this cream may be used for arthritis, it is also used after pulling  a muscle or a sports injury.  Madonna is well known for her gruelling workouts, exercising for around 3 hours per day in the gym.  Her regime usually includes Pilates, yoga and some weight training.
Given the extent of her training, it is likely that she has simply pulled a muscle and instead of popping painkillers decided to buy some anti-inflammatory cream.  Not such an exciting story but more than likely.