Study design and participants
knee joint diseases, injuries, mental illness or cognitive impairment, cartilage injury
JOINT TUBERCULOSIS, OSTEOMYELITIS, JOINT INFECTION
This is a randomized controlled trial in which patients were tested 1 day before surgery and 2 and 6 weeks after surgery. The patients were individually randomized to one of two parallel groups in a 1:1 ratio to receive either conventional or conventional care plus mHealth-based intervention. Physiotherapists divided the patients into two parallel groups according to the grouping tool designed by the statistician, who was not involved in the data collection. Group allocation was completed before surgery. Except for the physiotherapists administering the treatment, the patients and data collectors were blinded to the patients' group assignments.Patients awaiting ACL reconstruction were recruited at Peking university third hospital from April 2019 to December 2019 under the direction of five orthopedic surgeons. The inclusion criteria were as follows: (1) age between 18 and 60 years; (2) isolated ACL reconstruction for the first time, which can be combined with cartilage injury and partial meniscus resection; (3) a consistent postoperative recovery plan; (4) essential reading and writing skills and no communication problems; (5) ability to use smartphones with WeChat installed. The patient exclusion criteria were as follows: (1) the previous history of joint infection, joint tuberculosis or osteomyelitis, or lower limb surgery within 6 months; (2) severe heart, brain, kidney, and other organ dysfunctions; (3) combined with other severe knee joint diseases and injuries; (4) patients with mental illness or cognitive impairment; (5) transfer to other medical institutions after discharge.The pre- and post-injury physical activity levels were determined using the ROM.