English Social Sciences Law (general) incapacitation

Hello everyone,

There may be cases in which the nature of the index offence was such that the circumstances leading to it are very unlikely to be repeated. Or there may be factors about the offender's own circumstances at the time of release which allows the relevant authority to conclude that the risk of future offending is acceptably small. Such factors may include, for example, ill health, ***incapacitation*** or genuine religious conversion (which may of course in itself be difficult to assess). It also has to be recognised that the existence of any of these factors does not necessarily preclude the risk of serious re-offending. Each case must be decided on its merits

According to the dictionary, "incapacitation" means that a person is deprived (by sombody) of an apility, strength or the legal power

http://dictionary.reference.com/browse/incapacitation

But what does "incapacitation" implies in this case? Does it mean that a prisoner lost his/her ability/strength due to some reason? If so, why is "ill health" mentioned?

Thank you.