{
  "id": 3021000,
  "title": "How shoulder replacement changes bone mineral density",
  "url": "https://urgent.news/2026/08/24/how-shoulder-replacement-changes-bone-mineral-density",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-08-24T12:40:03.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-08-shoulder-bone-mineral-density.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "A recent study published in The Bone & Joint Journal has revealed changes in bone mineral density (BMD) around shoulder implants following total shoulder arthroplasty (TSA) and reverse shoulder arthroplasty (RSA) procedures. Led by Dr. Katsumasa Nakazawa and Professor Hidetomi Terai at Osaka Metropolitan University's Graduate School of Medicine, the research utilized dual-energy x-ray absorptiometry (DEXA) to objectively measure bone density changes over the first two years post-surgery. The study analyzed 137 patients, comparing BMD changes in the upper humeral area for 94 RSA patients and 43 aTSAs. The findings showed that RSA patients experienced significant decreases in BMD in certain regions around the implant stem, particularly in those with osteoporosis. In contrast, aTSA patients experienced a decline in BMD below the humeral head within the first six months, with little further decline thereafter. The results suggest that osteoporosis before surgery, monitoring BMD post-surgery, and optimizing osteoporosis treatment may be crucial for improving long-term outcomes in RSA patients. These findings may also enhance preoperative evaluation and postoperative care for elderly patients undergoing shoulder arthroplasty, particularly those with osteoporosis undergoing RSA.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}