{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T07:02:12Z","timestamp":1789542132781,"version":"build-2803163510"},"reference-count":23,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T00:00:00Z","timestamp":1789430400000},"content-version":"vor","delay-in-days":257,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Case Reports in Orthopedics"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:p>This report describes a rare case of early nontraumatic periprosthetic femoral fracture following total hip arthroplasty. The patient was a 74\u2010year\u2010old woman with osteoarthritis of the hip who underwent left total hip arthroplasty via a posterior approach using a tapered, rectangular, cementless femoral stem. The patient progressed well through early rehabilitation and was ambulating independently by postoperative Day 8. However, on postoperative Day 9, she experienced sudden\u2010onset thigh pain and was unable to bear weight while ascending stairs. Radiographs demonstrated a short oblique fracture of the left femur that was located distal to the stem tip and classified as a Vancouver type C (postoperative) fracture. Open reduction and internal fixation were performed using a locking plate in conjunction with cables and screws. At the 2\u2010year follow\u2010up, the patient had regained her ability to ambulate independently, and radiographs confirmed successful bone union. Finite element analysis suggested that concentration of stress around the tip of the stem as a result of flexed stem alignment, together with stair climbing, may have contributed to the periprosthetic femoral fracture. Caution is warranted when inserting a femoral stem in a flexed position because of an increased risk of periprosthetic femoral fracture.<\/jats:p>","DOI":"10.1155\/cro\/1962733","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T06:04:03Z","timestamp":1789538643000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Early Nontraumatic Periprosthetic Femoral Fracture After Total Hip Arthroplasty: A Case 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