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Serum alkaline phosphatase as an indicator of heterotopic bone formation following total hip arthroplasty. 1988

P Kjaersgaard-Andersen, and P Pedersen, and S S Kristensen, and S A Schmidt, and N W Pedersen
Department of Orthopaedic Surgery, Kolding Hospital, Denmark.

Serum alkaline phosphatase (SAP) was analyzed in 193 patients treated with total hip arthroplasty (THA) and correlated with the degree of heterotopic bone formation (HBF) one year after surgery. The influence of indomethacin on changes in SAP related to the development of heterotopic bone was studied. Ninety-eight patients received 25 mg of indomethacin three times daily for the first six postoperative weeks; the remaining 95 patients received a placebo treatment. No further anti-inflammatory drugs were allowed during the six weeks. SAP was measured preoperatively and six weeks and 12 weeks after surgery. No patients at risk for developing heterotopic bone after THA could be identified from the preoperative level of SAP. The level of SAP six weeks after THA gradually increased with the amount of HBF. A rise in SAP above 250 IU/liter 12 weeks after surgery was associated with the development of severe heterotopic bone in 13 of 17 patients. Indomethacin inhibited the development of heterotopic bone associated with a rise in SAP following THA. Future studies on HBF and SAP following THA should include information on patient use of anti-inflammatory drugs in the early postoperative period.

UI MeSH Term Description Entries
D007213 Indomethacin A non-steroidal anti-inflammatory agent (NSAID) that inhibits CYCLOOXYGENASE, which is necessary for the formation of PROSTAGLANDINS and other AUTACOIDS. It also inhibits the motility of POLYMORPHONUCLEAR LEUKOCYTES. Amuno,Indocid,Indocin,Indomet 140,Indometacin,Indomethacin Hydrochloride,Metindol,Osmosin
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009999 Ossification, Heterotopic The development of bony substance in normally soft structures. Ossification, Pathologic,Ectopic Ossification,Heterotopic Ossification,Ossification, Ectopic,Ossification, Pathological,Pathologic Ossification,Pathological Ossification
D004796 Clinical Enzyme Tests Analyses for a specific enzyme activity, or of the level of a specific enzyme that is used to assess health and disease risk, for early detection of disease or disease prediction, diagnosis, and change in disease status. Enzyme Tests, Clinical,Clinical Enzyme Test,Enzyme Test, Clinical,Test, Clinical Enzyme,Tests, Clinical Enzyme
D005260 Female Females
D006622 Hip Prosthesis Replacement for a hip joint. Femoral Head Prosthesis,Femoral Head Prostheses,Hip Prostheses,Prostheses, Femoral Head,Prostheses, Hip,Prosthesis, Femoral Head,Prosthesis, Hip
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly

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