(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.grade 2: inhomogeneity with areas of high signal intensity in articular cartilage (T2WI) indistinct trabeculae or signal intensity loss in femoral head and neck (T1WI).grade 1: inhomogeneous high signal intensity in cartilage (T2WI).grade 5: femoral head deformity plus three of the above mentioned radiographic features.grade 4: three of the above mentioned radiographic features.
![normal male hip arthritis xray normal male hip arthritis xray](http://321gomd.com/wp-content/uploads/2012/09/hip-arthritis.jpg)
grade 3: two of the above mentioned radiographic features.The Croft score uses different compositions of the following features for the grading of hip osteoarthritis: osteophytes, joint space narrowing, subchondral sclerosis, subchondral cysts 4,5. grade 3: severe joint space narrowing or obliteration, large subchondral cysts, severe deformity of the femoral head.grade 2: moderate joint space narrowing, small subchondral cysts of the femoral head and/or acetabulum, moderate loss of sphericity of the femoral head.grade 1: minor joint space narrowing, subchondral sclerosis of the femoral head and/or acetabulum, small osteophytes.The original Tönnis classification consists of three degrees of degenerative changes featuring osteoarthritis of the hip. Tönnis classification for osteoarthritis of the hip 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 male hip arthritis xray normal male hip arthritis xray](https://gruttermd.com/sites/default/files/hip-arthritis-xray.jpg)
Classification Plain radiographĭifferent grading schemes are described for plain radiographs of the hip: Osteoarthritis of the hip can be graded according to its severity.