Patients with tibial fracture with limited knee flexion need to have their knee joint released as soon as possible. If the effect of rehabilitation exercise is not good, surgery can be performed. Tibia fracture is one of the more common clinical trauma of the lower limbs, often resulting in patients with knee and ankle joint activities are limited. Patients with limited bending of the knee need to undergo knee joint release surgery as soon as possible. The commonly used clinical treatment for tibia fracture with limited knee bending includes knee joint release, which can loosen the soft tissues to facilitate recovery. Most of the patients can recover the normal function of the knee after treatment. If the patients still have limited bending of the knee, they need to actively carry out rehabilitation training. If the patient still has limited knee flexion, active rehabilitation training is needed, such as knee joint mobility training within one week after treatment, strength training of quadriceps and gluteus muscles, etc., and non-weight-bearing walking in about two weeks after the operation, followed by a gradual increase in the weight-bearing capacity of the affected side. Rehabilitation training can enhance the muscle strength of the affected side, restore the function of the tibia, and promote bone healing, thus improving the dysfunction of the knee such as limited bending. If mobility cannot be restored after rehabilitation, knee surgery can be performed to promote bone healing and restore normal bone function. The limited bending of the knee after a tibia fracture requires active treatment and can be cured, so patients do not need to worry too much, seek medical treatment as soon as possible and follow the doctor’s instructions to carry out rehabilitation training.