Trethowan's sign explained

Trethowan's sign is when Klein's line does not intersect the lateral part of the superior femoral epiphysis on an AP radiograph of the pelvis.^[1]

Clinical use

Trethowan's sign is indicative of a diagnosis of slipped capital femoral epiphysis.

See also

• Southwick angle

Notes and References

1. Goel . Ayush . Trethowan sign Radiology Reference Article Radiopaedia.org . 2023-11-15 . Radiopaedia . en-US . 10.53347/rid-22755. 239541553 . free .