Prevalence of Bennett lesions based on sex, ancestry, and age in an osteologic collection of 5,662 scapulae

Background Bennett lesions represent an extra‐articular ossification on the posteroinferior aspect of the glenoid fossa and a potential source of posterior shoulder pain and limitation. The prevalence of Bennett lesions in the general population is unknown. Materials and methods A total of 5,662 sca...

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Bibliographic Details
Published in:Clinical anatomy (New York, N.Y.) N.Y.), 2020-09, Vol.33 (6), p.844-849
Main Authors: Knapik, Derrick M., Merryman, Brandon, Tanenbaum, Joseph E., Bafus, Blaine T.
Format: Article
Language:English
Subjects:
Adult
Age
Age Factors
Aged
Bennett
Biomedical materials
Cadaver
Cadavers
Death
Evaluation
Female
Females
glenoid fossa
Humans
lesion
Lesions
Male
Males
Middle Aged
Museums
Ossification
Ossification, Heterotopic - epidemiology
Prevalence
Scapula - anatomy & histology
scapulae
Sex
Sex Factors
shoulder
Shoulder Joint - anatomy & histology
Statistical analysis
Young Adult
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Summary:Background Bennett lesions represent an extra‐articular ossification on the posteroinferior aspect of the glenoid fossa and a potential source of posterior shoulder pain and limitation. The prevalence of Bennett lesions in the general population is unknown. Materials and methods A total of 5,662 scapulae from 2,831 individual cadaveric specimens greater than 18 years of age at the time of death were examined. Matching scapulae were evaluated for Bennett lesions by two independent authors. Lesion prevalence was calculated and statistical analysis performed to evaluate differences in prevalence based on specimen sex (males vs. females), ancestry (African‐American vs. Caucasian) and with increasing age at the time of death. Results Bennett lesions were observed in 3.5% (n = 98 of 2,831) of specimens and 1.8% (n = 104 of 5,662) of scapulae. Interobserver reliability was 0.83, indicating excellent agreement among authors. Males possessed significant higher odds of possessing a Bennett lesion when compared to females (p = .009) and African‐American specimens when compared to Caucasian specimens (p
ISSN:0897-3806
1098-2353
DOI:10.1002/ca.23547