The purpose was to assess knee function outcomes between physical therapy and arthroscopic partial menisectomy(APM) for Metabolic syndrome(MetS) patients with degenerative meniscus lesions(DMLs) during 12 month follow up.

Metabolic syndrome were diagnosed with abdominal obesity, insulin resistance with or without glucose intolerance, dyslipidemia or elevated blood pressure and widely prevalence all around the world.MetS patients were always correlated with knee osteoarthritis or cartilage volume loss. For MetS patients with DMLs, whether physical therapy was non-inferior to APM in knee function and MetS components was unknown.

Inclusion Criteria:

• Must be age between 35 and 70 years old;

  • Clinical diagnosis of metabolic syndrome;
  • Clinical diagnosis of degenerative meniscus lesions;
  • Patients who has knee pain history
  • Knee symptoms consistent with DMLs verified on MRI
  • eligible for arthroscopic partial meniscectomy surgery by the examining orthopedic surgeons.

Exclusion Criteria:

• Must be able to have no acute knee injury such as car crash or acute sports injury;

  • Must be able to have no knee surgeries history;
  • Must be able to have no rheumatoid arthritis or serious knee osteoarthritis with deformity;
  • Must be able to have no contraindications to MRI;
  • Must be able to have no severe cardiopulmonary disease;
  • Must be able to have no musculoskeletal or neuromuscular impairments ;
  • Must be able to have good visual, hearing, or cognitive;