Iliotibial band (ITB) friction syndrome is a common overuse injury typically seen in the active athlete population. A nodular lesion on the inner side of the ITB as an etiology or an accompanying lesion from friction syndrome has been rarely reported. A 45-year-old male presented with recurrent pain and a movable nodule at the lateral joint area, diagnosed as ITB friction syndrome. The nodule was confirmed as a rare intra-articular fibroma of the tendon sheath (FTS) on the basis of histopathologic findings. We describe the MRI findings, arthroscopic and pathologic features, in this case of intra-articular FTS presenting with ITB friction syndrome.
Cumulative Trauma Disorders/complications/*diagnosis ; Fibroma/*etiology ; Friction ; Humans ; Iliotibial Band Syndrome/complications/*diagnosis ; Knee Joint/*pathology ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Pain/etiology ; Tendons/*pathology

Iliotibial band syndrome (ITBS), as an overused injury of the lower extremities, has developed into a common cause of lateral knee pain. At present, the treatment of ITBS includes drug therapy, muscle strength training, physical therapy, and surgical treatment. Among these methods, physical therapy, drug therapy, and surgical treatment can only alleviate the symptoms of patients. As a safe and effective treatment, lower limb muscle strength training can improve patients' muscle strength, correct abnormal gait, and reduce the recurrence rate of the disease by paying attention to the dynamic changes of patients' recovery process. At present, the pathogenesis of ITBS remains unclear, and the treatment methods are not unified. It is necessary to further study the biomechanical factors related to the lower extremities and develop more scientific and comprehensive muscle strength training methods.
Humans ; Resistance Training ; Running/physiology* ; Iliotibial Band Syndrome/diagnosis* ; Lower Extremity ; Physical Therapy Modalities/adverse effects* ; Knee Joint ; Muscle Strength/physiology* ; Muscles/injuries* ; Biomechanical Phenomena

Running is becoming one of the most popular leisure sports. Part of the growing popularity of running is its easy accessibility and health benefits. The incidence of running injuries rates ranges from 37% to 56%, which incidence rate is still 2 to 6 times lower than in all other sports. Most running injuries are musculoskeletal overuse syndrome of the lower extremity. The risk factors of running injuries can be training errors, improper running surface, worn shoes, body flexibility, prior injury. The knee is the most common site of injury and accouts for 25% to 33% of all, and pa-tellofemoral stress syndrome is the most common known as runner's knee. Iliotibial band syndrome, medial tibial stress syndrome, plantar fascitis, Achilles tendinitis, stress fracture are common injuries in runners. The physical examination includes a biomechanical screening to identify related imbalances. Additionally, each runner is observed walking and running. This comprehensive, running specific approach to diagnosis can be helpful in developing optimum rehabilitation program.
Cumulative Trauma Disorders ; Diagnosis ; Fasciitis ; Foot ; Fractures, Stress ; Iliotibial Band Syndrome ; Incidence ; Insurance Benefits ; Knee ; Leisure Activities ; Lower Extremity ; Mass Screening ; Medial Tibial Stress Syndrome ; Physical Examination ; Pliability ; Rehabilitation ; Risk Factors ; Running* ; Shoes ; Sports ; Tendinopathy ; Walking