Rib stress fractures occur in 8.1–16.4% of elite rowers (2% university, 1% junior elite), 86% in ribs four to eight
Case series tie them to amenorrhoea, low bone density or poor technique combined with volume increases; volume alone may matter less than those factors
Key Findings
A rib stress fracture (RSF) is an incomplete fracture from an imbalance between bone resorption and formation. Incidence: 8.1–16.4% of elite rowers, 2% of university rowers, 1% of junior elite rowers; elite rowers are more likely to sustain one than non-elite. About 86% of cases with a known site are in ribs four to eight, mostly anterolateral/lateral. Sweep rowers and scullers are affected equally, but the site differs.
Mechanism is multifactorial: posterior-directed resultant forces from the arm-to-handle force vector combined with scapular-retractor forces at mid-drive, or the external obliques and rectus abdominis loading the ribs repeatedly at the finish, may be what causes RSF. Low bone mineral density, joint hypomobility or vertebral malalignment may be associated.
In case studies, risk was higher when amenorrhoea, low bone density or poor technique coincided with a rise in training volume; volume on its own may matter less than the other factors. Other candidate contributors: big differences between seat and handle velocity, sequential movement patterns, high elbow-flexion:knee-extension strength ratios, high shoulder-angle excursion, gearing (indirectly), low calcium or vitamin D, eating disorders, low testosterone, depot medroxyprogesterone.
Management: 1–2 weeks off rowing with analgesic modalities, then a slow return at low-impact intensity with modified pain-free training. Prevention (some evidence): strengthen serratus anterior and leg extensors, stretch the lumbar spine, increase hip flexibility, reduce excessive scapular protraction, use ergometers on slides or floating-head ergometers, calcium and vitamin D supplementation.
Practical Application
This review puts rib stress fractures at 8.1–16.4% of elite rowers, concentrated in ribs four to eight, and finds the risk in case series comes from amenorrhoea, low bone density or poor technique combined with volume increases — volume alone may matter less. Manage the stack together: progress volume gradually, and treat menstrual dysfunction, suspected low BMD, low calcium/vitamin D and technique faults as the multipliers to act on (REF-644, REF-341).
Treat new localised rib or chest-wall pain as a suspected stress injury → imaging and a supervised return (the reviewed protocol: 1–2 weeks off, then a slow pain-free, low-impact build), never push-through.
Prevention levers with some evidence in the review: serratus anterior and leg-extensor strength, lumbar and hip mobility, less scapular protraction, slide or floating-head ergometers, calcium and vitamin D.
Limitations
Evidence is largely case series and small elite cohorts; incidence varies by squad, sex and monitoring; mechanisms are proposed from biomechanics rather than proven; prevention strategies have "some evidence" only.
How this entry was checked and changed
Content correction 2026-09-27
"Cluster around rapid load increases" -> per the abstract, risk rises when amenorrhoea, low bone density or poor technique coincide with volume increases, and volume by itself may affect injury less than other factors do; wording changed accordingly. "Technique/equipment change" -> technique faults and gearing/ergometer type as the abstract frames them.
Added the abstract's numbers (2% university, 1% junior elite, 86% in ribs four to eight, 1–2 weeks cessation), mechanisms, other risk factors, management and prevention list. Type clarified as a search-based literature review without meta-analysis.