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Periprosthetic bone remodeling around short stem.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Synder, Marek Krajewski, Karol Sibinski, Marcin Drobniewski, Marek
Abstract	Total hip arthroplasty (THA) has become standard treatment for advanced degenerative changes of the hip. A few studies have reported promising clinical outcomes with the Metha stem fixated by metaphyseal anchoring. This study evaluated early bone remodeling around the Metha stem during 12 months of follow-up. The study population included 36 patients (18 women and 18 men) with a mean age of 50.4 years who underwent THA between 2009 and 2011 for advanced degenerative changes of the hip with the Metha stem. Patients were evaluated on the day of surgery, 10 days postoperatively, and then at 3, 6, and 12 months postoperatively. Evaluation included Harris Hip Score and dual-energy x-ray absorptiometry (DEXA) scanning in 7 Gruen zones. At 12 months postoperatively, Harris Hip Score increased significantly by 38 points. A significant change in bone mineral density (BMD) was found immediately after surgery; this change was most pronounced in Gruen zone 3 (+36%), followed by Gruen zones 2 and 5. The smallest postoperative BMD increase was observed in Gruen zone 7 (+3.66%). In contrast, at 3 months postoperatively, a trend toward decreased BMD was observed in all Gruen zones. At 6 months postoperatively, mean BMD decreased in all Gruen zones except for Gruen zone 6. At 12 months postoperatively, mean BMD increased in Gruen zones 2 through 6, with the highest value (30%) observed in Gruen zone 3; in Gruen zones 1 and 2, mean BMD decreased. Short-term assessment of periprosthetic bone remodeling after uncemented Metha stem implantation revealed different host-bone responses. Apparently, the Metha stem can reduce BMD loss in the proximal femur. DEXA is a precise method for assessing BMD changes around implanted Metha stem.
Related Links	https://www.healio.com/orthopedics/journals/ortho/2015-3-38-3-supplemental/{2315bbf4-e37b-4fec-b8de-665375aa6bec}/periprosthetic-bone-remodeling-around-short-stem
File Format	HTM / HTML
ISSN	01477447
e-ISSN	19382367
DOI	10.3928/01477447-20150215-55
Journal	Orthopedics
Issue Number	3 Suppl
Volume Number	38
Language	English
Publisher	SLACK Incorporated
Publisher Date	2015-03-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Orthopedics Arthroplasty, Replacement, Hip Bone Remodeling Femur Surgery Hip Joint Hip Prosthesis Joint Diseases Absorptiometry, Photon Bone Density Physiology Postoperative Period Prospective Studies
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Surgery

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