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Epidemiology and time trends of isolated greater tuberosity fractures from 1944 to 2020 – A cohort study in Malmö, Sweden

Cederwall, Anton LU ; Rosengren, Björn E. LU and Ahlborg, Henrik G. LU (2025) In Shoulder and Elbow
Abstract

Background: Although up to 25% of proximal humeral fractures are isolated greater tuberosity fractures (IGTFs), comprehensive epidemiological data are lacking. Objectives: Describe the epidemiology and time trends of IGTF in Malmö, Sweden, 1944–2020. Methods: We identified IGTF in Malmö residents (≥18 years) by reviewing relevant radiology examinations during 17 sample years from 1944 to 2020. Fractures were classified according to the Mutch classification. Results: In total, 614 IGTF (60% women) were identified (mean age women 60 (SD 16), men 48 (SD 16)). Among individuals <50 years, the incidence was lower in women than men (9 95% confidence interval (CI) 7–10] vs 15 [95% CI 13–18] per 100,000 persons years) whereas the reverse was... (More)

Background: Although up to 25% of proximal humeral fractures are isolated greater tuberosity fractures (IGTFs), comprehensive epidemiological data are lacking. Objectives: Describe the epidemiology and time trends of IGTF in Malmö, Sweden, 1944–2020. Methods: We identified IGTF in Malmö residents (≥18 years) by reviewing relevant radiology examinations during 17 sample years from 1944 to 2020. Fractures were classified according to the Mutch classification. Results: In total, 614 IGTF (60% women) were identified (mean age women 60 (SD 16), men 48 (SD 16)). Among individuals <50 years, the incidence was lower in women than men (9 95% confidence interval (CI) 7–10] vs 15 [95% CI 13–18] per 100,000 persons years) whereas the reverse was found in individuals ≥50 years (36 [95% CI 30–42] vs 19 [16–23]). No statistically significant time trends in the incidence rate were observed from year 1944 to 2020. We identified 45% avulsion-, 44% split- and 11% depression-fractures. Conclusions: IGTF is more common in men than women in age-group <50 years, while the opposite is found in age-group ≥50 years. No statistically significant time trend was observed in IGTF incidence from 1944 to 2020 in Malmö, Sweden.

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organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
epidemiology, greater tuberosity ratio, incidence, isolated greater tuberosity fracture, Mutch classification, proximal humeral fracture, time trend
in
Shoulder and Elbow
publisher
SAGE Publications
external identifiers
  • scopus:105007017572
  • pmid:40458603
ISSN
1758-5732
DOI
10.1177/17585732251344547
language
English
LU publication?
yes
id
d916216b-a760-4d55-9a16-8783bacafe70
date added to LUP
2025-09-18 14:45:04
date last changed
2025-09-19 04:02:28
@article{d916216b-a760-4d55-9a16-8783bacafe70,
  abstract     = {{<p>Background: Although up to 25% of proximal humeral fractures are isolated greater tuberosity fractures (IGTFs), comprehensive epidemiological data are lacking. Objectives: Describe the epidemiology and time trends of IGTF in Malmö, Sweden, 1944–2020. Methods: We identified IGTF in Malmö residents (≥18 years) by reviewing relevant radiology examinations during 17 sample years from 1944 to 2020. Fractures were classified according to the Mutch classification. Results: In total, 614 IGTF (60% women) were identified (mean age women 60 (SD 16), men 48 (SD 16)). Among individuals &lt;50 years, the incidence was lower in women than men (9 95% confidence interval (CI) 7–10] vs 15 [95% CI 13–18] per 100,000 persons years) whereas the reverse was found in individuals ≥50 years (36 [95% CI 30–42] vs 19 [16–23]). No statistically significant time trends in the incidence rate were observed from year 1944 to 2020. We identified 45% avulsion-, 44% split- and 11% depression-fractures. Conclusions: IGTF is more common in men than women in age-group &lt;50 years, while the opposite is found in age-group ≥50 years. No statistically significant time trend was observed in IGTF incidence from 1944 to 2020 in Malmö, Sweden.</p>}},
  author       = {{Cederwall, Anton and Rosengren, Björn E. and Ahlborg, Henrik G.}},
  issn         = {{1758-5732}},
  keywords     = {{epidemiology; greater tuberosity ratio; incidence; isolated greater tuberosity fracture; Mutch classification; proximal humeral fracture; time trend}},
  language     = {{eng}},
  publisher    = {{SAGE Publications}},
  series       = {{Shoulder and Elbow}},
  title        = {{Epidemiology and time trends of isolated greater tuberosity fractures from 1944 to 2020 – A cohort study in Malmö, Sweden}},
  url          = {{http://dx.doi.org/10.1177/17585732251344547}},
  doi          = {{10.1177/17585732251344547}},
  year         = {{2025}},
}