In forensic pathology, fractures of the hyoid bone (a U-shaped bone at the base of the tongue) and thyroid cartilage (the largest laryngeal cartilage, forming the „Adam’s apple“) are key findings in deaths involving neck compression, such as hanging or strangulation. These injuries result from force applied to the neck, but their presence, pattern, number, and location help differentiate mechanisms. No single fracture type is pathognomonic (exclusive) to homicide or suicide; interpretation requires context, including scene evidence, ligature marks, petechiae, toxicology, and other autopsy findings.
Modern studies (including prospective anthropological analyses) show that laryngohyoid fractures occur frequently in suicidal hanging, often more than previously thought due to improved detection methods (e.g., stereomicroscopy, decalcification, or post-mortem CT). Frequency varies widely across studies due to differences in population age, suspension type (complete vs. incomplete), ligature width, knot position, and examination technique.
Key Forensic Patterns and Frequencies
- Hyoid Bone Fractures:
- More common in older individuals (>40–50 years) because the bone ossifies and becomes brittle with age.
- In suicidal hanging: Incidence ranges from ~3–25% in many studies, but higher (up to 15–30%) when combined with other structures in comprehensive reviews. Recent prospective studies report overall laryngohyoid fractures (including hyoid) in 47–72% of cases.
- In homicidal strangulation (manual or ligature): Often higher (20–50%+), especially in manual cases where direct thumb pressure targets the hyoid.
- Pattern: Typically unilateral greater cornu (horn) fracture; bilateral or multiple fractures possible but not diagnostic alone.
- Thyroid Cartilage Fractures:
- The most common site in many hanging series (e.g., isolated thyroid fractures in 15–34% of cases).
- In suicidal hanging: Frequently the predominant injury (e.g., 33.7% isolated in one large prospective study of 178 cases).
- In strangulation: Also common, sometimes more so than hyoid in ligature cases.
- Pattern: Superior horns most vulnerable; fractures often superior or bilateral.
- Combined or Multiple Fractures (e.g., Hyoid + Thyroid):
- Occur in both mechanisms; incidence increases with age, body weight/BMI, and force (e.g., complete suspension in hanging).
- Not inherently indicative of homicide; seen in 7–23% of suicidal hangings in meta-analyses.
- Cricoid Cartilage Fractures:
- Rare in suicidal hanging (near 0% in large reviews; one case in thousands reported).
- More suggestive of homicide if present in apparent hanging (incidence 5–20% in homicidal strangulation).
- Influencing Factors:
- Age: Strong positive correlation; fractures rare in young victims (<30 years), common in older ones.
- Suspension Type: Higher in complete hanging (full body drop) vs. incomplete (partial support), especially in those >40 years.
- Ligature/Knot Position: Trends toward more fractures with narrower ligatures or posterior knots, but not always statistically significant.
- Detection Method: Visual/palpation misses many; advanced techniques (microscopy, CT, anthropological dissection) reveal higher rates.
Hanging vs. Strangulation: Comparative Insights
- Suicidal hanging often produces a high posterior furrow, upward traction, and potential for thyroid-dominant fractures.
- Homicidal strangulation (manual) involves anterior pressure, potentially more hyoid-focused fractures.
- Overlap is significant; fractures alone do not rule in/out suicide. Other signs (e.g., no defensive wounds, scene consistency, absence of struggle marks) support suicide.
- Recent 2025 prospective study (56 cases): 71.4% laryngohyoid fractures in suicidal hangings, thyroid most common, age significant factor.
- Meta-analyses: Overall ~36–72% in hanging; no strong evidence that multiple fractures (e.g., 3+) are „extremely unusual“ in suicide—contrary to some older claims.
Application to High-Profile Cases (e.g., Jeffrey Epstein)
In Epstein’s 2019 autopsy (ruled suicide by hanging), fractures included bilateral thyroid cartilage and left hyoid. Dr. Michael Baden (hired by family) claimed these were „extremely unusual“ in suicidal hanging and more consistent with homicidal strangulation. However, NYC Chief Medical Examiner Dr. Barbara Sampson stood by suicide, noting such fractures occur in hangings, especially in older individuals (Epstein was 66). Peer-reviewed literature supports this: Multiple fractures are documented in suicidal cases, particularly with age and suspension dynamics. No official reversal has occurred; FBI/DOJ reviews confirmed suicide.
Forensic consensus: Neck fractures are evidence of significant force but must be interpreted holistically. Isolated reliance on fracture number/location risks error.
Verified Sources List (Direct Links to Key Studies and Reports):
- Journal of Forensic Sciences (2025 Prospective Study on Laryngohyoid Fractures in Suicidal Hangings): https://onlinelibrary.wiley.com/doi/10.1111/1556-4029.70102
- Forensic Science International (Various Studies on Hanging Fractures): https://www.sciencedirect.com/science/article/abs/pii/S0379073810004500
- PubMed (Multiple Abstracts on Hyoid/Thyroid in Hanging): https://pubmed.ncbi.nlm.nih.gov/40495358/
- ScienceDirect (Review of Throat Trauma): https://www.sciencedirect.com/science/article/pii/S2589871X20300516
- PBS NewsHour (Medical Examiner on Epstein Autopsy): https://www.pbs.org/newshour/nation/medical-examiner-dismisses-doubts-about-epstein-autopsy
- The New York Times (Baden’s Claims vs. Official Ruling): https://www.nytimes.com/2019/10/30/nyregion/jeffrey-epstein-homicide-autopsy-michael-baden.html
- Wikipedia (Death of Jeffrey Epstein, Sourced Section on Autopsy): https://en.wikipedia.org/wiki/Death_of_Jeffrey_Epstein
- MedPage Today (Forensic Opinion on Neck Fractures in Hanging): https://www.medpagetoday.com/opinion/working-stiff/83087
