{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T09:24:04Z","timestamp":1789550644621,"version":"build-2803163510"},"reference-count":70,"publisher":"SLACK, Inc.","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Orthopedics"],"published-print":{"date-parts":[[2015,12]]},"abstract":"<jats:p>\n            Mason type I fractures are the most common fractures of the radial head. The fractures have a benign character and often result in good, pain-free function. Nevertheless, up to 20% of patients with a Mason type I fracture report loss of extension and residual pain. Currently, there is a lack of consensus concerning diagnosis and treatment of these fractures. The goal of this study was to systematically review incidence, diagnosis, classification, treatment, and outcome of Mason type I radial head fractures in adults and establish an evidence-based treatment guideline. A search of the MEDLINE, EMBASE, and Cochrane databases was conducted for English titles without restrictions on publication date. The authors included titles that addressed Mason type I radial head fractures and covered incidence, diagnostics, treatment, or functional or patient-related outcome. Included were randomized controlled trials; case-control studies; comparative cohort studies; case series with more than 10 patients; and expert opinions. Reference lists were cross-checked for additional titles. The search yielded 1734 studies, of which 95 met the inclusion criteria. Seven studies showed that the elbow extension test has a high sensitivity (88.0\u201397.6) to rule out Mason type I radial head fractures. If radiography is required, antero-posterior and lateral radiographs suffice. For pain relief, hematoma aspiration seems safe and effective. Mason type I fractures are best treated with 48 hours of rest with a sling, followed with active mobilization. Cast immobilization should be avoided. Mobilization should be encouraged and if needed supported by physical therapy. [\n            <jats:italic>Orthopedics.<\/jats:italic>\n            2015; 38(12):e1147\u2013e1154.]\n          <\/jats:p>","DOI":"10.3928\/01477447-20151123-06","type":"journal-article","created":{"date-parts":[[2015,12,22]],"date-time":"2015-12-22T20:10:13Z","timestamp":1450815013000},"source":"Crossref","is-referenced-by-count":12,"title":["Mason Type I Fractures of the Radial Head"],"prefix":"10.3928","volume":"38","author":[{"given":"Robert-Jan O.","family":"de Muinck Keizer","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Monique M. 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