Objective:To observe the changes of hyaluronic acid(HA)in synovial fluid of patients in different stages with osteoarthritis(OA)in knee joint and analyze joint functional status of them.

Objective To investigate the conditions of joint function rehabilitation in discharged patients undergoing hip replacement and study the factors influencing the joint function rehabilitation.

Objective To study the knee function recovery following distal femoral fracture operation through different approaches.

Objective:To evaluate the degree of Knee function and incidence rate of pain of the tibial shaft after intramedullary nailing fixation,analyse possible factors resulting in Knee pain.

In order to study the relationship between type s adult Colles fracture(ACF),wrist s instability and wrist joint s function,according to types of ACF made by Frykman,102 cases of ACF(104 wrist) were examined the anteroposterior and lateral X-Rays of wrist joint at the time of pre-reduction,post-reduction and post-removal of external fixation,the function of wrist joint was observed.

The clinical research of injury category of tibial plateau fracture and influence to knee joint function;

Analyze the injury mechanism of tibial plateau fracture by combining the Schatzker type and Compare the influence to knee joint function to find the greatest type;2.