Although plain radiography of the knee (including a weight-bearing view, a semiflexed
view, and lateral and skyline views) remains the standard imaging modality for morphologic assessment of knee OA, imaging is an adjunct for diagnostic purposes.
Reproducibility of the semiflexed
(metatarsophalangeal) radiographic knee position and automated measurements of medial tibiofemoral joint space width in a multicenter clinical trial of knee osteoarthritis.
All had tibiofemoral knee osteoarthritis evaluated for pain on a visual analog scale and radiologically on digital x-rays using a high-performance Lyon schuss slightly modified semiflexed
There has been significant debate regarding the best technique to track progression of OA on plain radiographs, although now the gold standard is semiflexed
, fluoroscopic positioning.
Radiographic findings taken by a fluoroscopically positioned semiflexed
view confirmed a slowing of joint space narrowing in the high-dose group.