METHOD FOR DETERMINING OPTIMAL INTERVAL BETWEEN OPERATIONS OF ENDOPROSTHESIS DURING BILATERAL HONARTHROSE OR COXARTHROSIS IN PATIENTS WITH OSTEOPOROSIS Russian patent published in 2017 - IPC G01N33/48 

FIELD: medicine.

SUBSTANCE: method comprises an individual examination of the patient, 3 months after the first operation T-criterion of the femoral neck on the side of the planned operation, the level of osteocalcin, the level of β-Cross laps, the level of vitamin D in the blood serum are additionally examined. If the 10-year risk of major osteoporotic fractures is less than 10%, the T-criterion of the femoral neck on the side of the planned operation is greater than -1 SD, the level of osteocalcin, the level of β-Cross laps, the level of vitamin D in the blood serum is normal, then the operation of the second endoprosthesis can be performed 3 months after the first one. If the 10-year risk of major osteoporotic fractures is more than 10% and less than 20%; the T-criterion of the femoral neck on the side of the planned operation is less than -1 SD and more than -2.5 SD; the level of osteocalcin is below normal, the level of β-Cross laps is above normal, the level of vitamin D in the blood serum is below normal, then the operation of the second endoprosthesis can be performed not earlier than 6 months after the first endoprosthesis. If the 10-year risk of major osteoporotic fractures is more than 20%; the T-criterion of the femoral neck on the side of the planned operation is less than -2.5 SD; the level of osteocalcin is below normal, the level of β-Cross laps is above normal, the level of vitamin D in the blood serum is below normal, then the operation of the second endoprosthesis can be performed not earlier than 12 months after the first one.

EFFECT: use of the invention allows to assess the risks of early aseptic instability of the endoprosthesis, to determine the optimal time for the second operation, to reduce the number of complications, to reduce the costs of treatment and to improve the quality of patients' life.

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