Radiographic evaluation of osteoarthritis of the hip: an inter-observer study of 61 hips treated for late-detected developmental hip dislocation. (2018) Journal of hip preservation surgery. Influence of Tönnis grade on outcomes of arthroscopy for FAI in athletes: a comparative analysis. (2018) Clinical orthopaedics and related research. Classifications in Brief: Tönnis Classification of Hip Osteoarthritis. Atlas of standard radiographs of arthritis" UNESCO and WHO Ģ. rapidly destructive osteoarthritis of the hipġ.grade 4: above criteria plus femoral head deformity.grade 3: criteria of grade 1 and 2 plus indistinct zone between femoral head and acetabulum subchondral signal loss due to bone sclerosis.
![normal xray of hip joint normal xray of hip joint](https://buxtonosteopathy.co.uk/wp-content/uploads/2016/01/a00213f03.jpg)
![normal xray of hip joint normal xray of hip joint](https://eorif.com/sites/default/files/AP-Hip.jpg)
grade 4: gross loss of joint space with above features plus large osteophytes and increased deformity of the femoral head and acetabulum.grade 3: marked joint space narrowing, small osteophytes, some sclerosis and cyst formation and deformity of femoral head and acetabulum.grade 2: definite joint space narrowing, defined osteophytes and some sclerosis, especially in the acetabular region.grade 1: possible joint space narrowing and subtle osteophytes.
![normal xray of hip joint normal xray of hip joint](https://prod-images-static.radiopaedia.org/images/23310558/43ab65b7bab45b881da26218dbbc49_jumbo.jpeg)
Classification Plain radiographĭifferent grading schemes are described for plain radiographs of the hip: Osteoarthritis of the hip can be graded according to its severity.