ABSTRACT
Objective To evaluate the clinical significance of judgement about rheumatoid arthritis(RA)carpal subsidence by carpal height ratio(CHR).Methods The materials which have been maken definite diagnosis,including pair of carpal films of 40 cases,were devided into 6 groups to measure carpal height ratio by X-ray stage and deviation of metacarpal and phalanx toward ulna side.Results Early stage ? 36 =0.512,Middle stage ? 26 =0.514,Later stage? 18 =0.455.The group without deviation toward ulna side ? 69 =0.502,the group which deviation was smaller than 15?:? 10 =0.484,the group which deviation was larger than 15 ?:? 1 =0.450.Conclusion Carpal height ratio(CHR)has very importmant clinical significance to study the development and evolution of rheumatoid arthritis(RA)carpal subsidence.
ABSTRACT
The carpal injury is difficult to diagnose due to anatomical complexity and the like. So, in order to get radiological knowledge of normal wrist, the authors measured the values which will be described on the wrist PA and lateral roengenogram obtained from 440 normal wrists(male : 188 cases, female : 252 cases) in randomly selected patients. The following results were obtained. l. Ulnar variance(mm±standard deviation): Total 1.1±1.2 : negative variance : 9.3%, positive variance : 56.1%, 2. Scapholunate Gap(mm±standard deviation): Total 0.4±0.7, 3. Ulnar Tilt(degrees±standard deviation): Total 23.6±5.3, 4. Volar Tilt, 5. Carpal height rstio : Total 0.52±0.05 male 0.53±0.04 female 0.51±0.05 : Total 13.1±5.9, 6. Carpal ulnsr distance ratio Total 0.05±0.05, 7. Scapholunate Angle : Total 49.9'±10.1', 8. Capitatolunate Angle Total 17.5'±10.0', 9. Radiolunate Angle Total 8.8'±6.7', 10. Carpal width ratio Total 0.72±0.08 11. Carpal thickness ratio Total 0.49±0.07.