There was a war and Matthew (Dan Stevens) was bedridden until he got up and walked.
bedridden Child Rather spent about three years of his childhood bedridden with rheumatic fever.
As Rather puts it, “bedridden seriously, as in using a bed pan.”
also bed-ridden, mid-14c., from adjectival use of late Old English bæddrædæn "bedridden (man)," from bedrid, from Old English bedreda, literally "bedrider, bedridden (man)," from bed + rida "rider" (see ride (v.)). Originally a noun, it became an adjective in Middle English and acquired an -en on the analogy of past participle adjectives from strong verbs such as ride.
bedridden bed·rid·den (běd'rĭd'n) or bed·rid (-rĭd')
Confined to bed because of illness or infirmity.