Tensor Fasciae Latae (TFL): Pain Pattern and Treatment
The tensor fasciae latae is a small muscle at the front of the outer hip that tensions the iliotibial band. Its documented pattern is a strong zone of pain at the hip joint over the greater trochanter, running down the outer thigh toward the knee. Travell and Simons called this picture pseudotrochanteric bursitis, because it is routinely mistaken for bursitis of the hip.
Attachments and action
Origin: The anterior outer lip of the iliac crest and the outer surface of the anterior superior iliac spine.
Insertion: The iliotibial tract, which continues down the outer thigh to the lateral tibia.
Action: Flexion, abduction, and internal rotation of the hip; tension on the iliotibial band stabilizing the knee.
Where the pain is felt: At the hip joint over the greater trochanter, extending down the outside of the thigh toward the knee, with tenderness that makes lying on that side difficult.
Common causes: Running on sloped surfaces, walking or hiking downhill, prolonged sitting with knees drawn up, a leg-length difference, excessive foot pronation.
Patients say: “Hip bursitis that never resolves.” Pain lying on that side at night. An outer thigh that aches on long walks.
When to get evaluated: Hip pain after a fall with inability to bear weight, or groin pain that grinds on hip rotation, gets imaging for fracture or joint disease before needling.
How this muscle is examined and treated
Examination tests resisted hip abduction and flexion, differentiates the trochanteric bursa from the muscle, and maps the TFL just below the front of the iliac crest for the point that reproduces the familiar hip and outer-thigh pain. Needling addresses this small muscle directly. Assessment and treatment happen in the same visit.
Related conditions
Hip & Glute PainKnee PainSports & Performance Injuries
This page is educational. It describes muscle referral patterns commonly associated with pain; it does not diagnose your condition. Individual patterns vary. For evaluation of your specific pain, see a licensed clinician. Seek immediate medical care for emergencies. Eugene Baek, L.Ac. · New Jersey License 25MZ00080600