Trial design and participants
infected injury, fracture
NAIL DISEASE
The NINJA (Nail bed INJury Analysis) trial was a multicentre, pragmatic two-arm parallel-group superiority RCT. The trial protocol and statistical and health economic analysis plans have been publishedParticipants were recruited from 20 UK National Health Service (NHS) hand surgery units. Inclusion criteria were: all children aged less than 16 years; a nail bed injury occurring within 48 h of presentation believed to require surgical repair; ability of patients, parents or guardians to give consent to inclusion and complete follow-up; and injury to a single finger. Patients were excluded if they had: an infected injury; underlying nail disease or deformity in the injured finger or contralateral finger before injury; a distal phalanx fracture requiring fixation; amputation; loss of part or all of the nail bed requiring reconstruction; and multiple nail bed injuries. Nail bed injuries extending to the nail fold were accepted.