Exercise Helps, but Fracture Prevention Needs a System

Exercise can lower fracture risk, especially when professionals supervise it. But the best real-world evidence here points to a broader prescription: structured exercise, bone-health assessment, and practical fall prevention delivered together.

In rural Germany, that combined approach reduced femoral fractures over 12 months. It did not significantly reduce all fragility fractures requiring hospitalization, the trial's primary endpoint. That distinction matters. A hip or femoral fracture prevented is clinically meaningful, but it does not prove that a health-system program prevents every kind of fragility fracture—or that exercise alone caused the result.

A routine-care program produced a narrow, useful result

The OFRA cluster-randomized trial tested an osteoporosis-fracture prevention program in routine care rather than under the tidy conditions of a single exercise study. The program offered three interventions to older adults: mobility and falls-prevention classes, bone-health assessment with reimbursed DXA scanning, and home-safety counseling.

The modified intention-to-treat analysis included 9,408 people in intervention regions and 27,318 matched controls; their mean age was 78.7 years. Over 12 months, the primary endpoint—all fragility fractures requiring hospitalization—did not differ significantly between groups. The reported hazard ratio was 0.96 (95% CI, 0.82 to 1.13). Because the confidence interval includes 1.0, the study cannot rule out no effect on that broader outcome.

Femoral fractures did fall: hazard ratio 0.76 (95% CI, 0.59 to 0.99). That estimate reached conventional statistical significance, although the upper bound sits close to no difference. The program did not improve mortality or nursing-home admission during the observed follow-up.

This is the central practical finding: a bundled routine-care pathway coincided with fewer femoral fractures, not fewer hospitalized fragility fractures overall. The trial does not identify the ingredient responsible. It tested a package, and patients used each part of the package unevenly.

Why exercise belongs in the plan

Direct evidence for exercise is stronger than the OFRA trial alone might imply. A 2022 systematic review and meta-analysis by Hoffmann et al. found that exercise reduced overall low-trauma fractures, with an incidence rate ratio of 0.67 (95% CI, 0.51 to 0.87). It also reduced major osteoporotic fractures, with an incidence rate ratio of 0.69 (95% CI, 0.52 to 0.92).

The review found larger effects in predominantly supervised programs than in less supervised formats. That fits the practical appeal of OFRA's organized classes: supervision can support regular participation and safer progression, while falls-prevention training targets a route to fracture that bone density alone cannot close.

Still, "exercise" is not one intervention. A supervised, structured program differs from a printed routine on the refrigerator door, where it may spend its active life holding up grocery lists. The evidence in this group of studies does not show that every exercise format prevents fractures.

Simple home exercise did not settle the question

The DO-HEALTH randomized trial tested vitamin D3, omega-3s, and a simple home exercise program in older adults, with incident vertebral fractures as an outcome. The home-exercise component showed a null or unclear result for vertebral fractures. That does not contradict the supervised-exercise meta-analysis outright: the intervention, supervision, and fracture endpoint differed. It does rule out a confident claim that a light home program alone reliably prevents vertebral fractures.

Likewise, a systematic review of progressive resistance training in people at risk of fracture found health and functional benefits, but no clear reduction in falls or the number of people who fell. Resistance training may improve strength and some bone-related measures without automatically producing fewer injurious falls in day-to-day life.

The rest of the system mattered, even when uptake was incomplete

OFRA's participation figures make single-cause stories impossible. About 30% of invited participants attended exercise classes, 13.6% completed reimbursed DXA, and 51.8% received home-safety advice. New anti-osteoporotic medication prescribing occurred in 3.8% of intervention participants versus 1.9% of controls.

Among people who did attend exercise, more than half reportedly completed all six 90-minute sessions, and 59% reported continuing home exercise. Those adherence figures came from a telephone subsample of 780 people, not from complete follow-up of every participant. The study also did not measure whether home-safety counseling led people to remove hazards or change their living environments.

Partial uptake likely diluted the effect of the assigned program on total fracture incidence. It also means the femoral-fracture result cannot be assigned to exercise, DXA, medication initiation, home advice, or any particular combination. A fracture-prevention system is harder to study than a pill, because participants do not swallow the same system at the same dose.

The program's economic evaluation adds a needed brake on easy public-health claims. Compared with usual care, OFRA cost an additional 148.37 euros per participant, with an incremental cost-effectiveness ratio of 66,094.63 euros per fracture-free year of survival. The estimate does not mean the program lacks value, but it does mean implementation was not free and its short-horizon economics were unfavorable.

Why preventing femoral and hip fractures carries weight

Hip fractures often change a person's ability to live independently. In a prospective South African study of 287 people presenting with hip fracture, participants had clinical risk factors similar to those reported in high-income countries and had poor functional outcomes after fracture. The authors argued for screening and treatment pathways before a fracture occurs; see Dela et al.'s study.

Risk also persists after the first event. A study of second hip fractures describes high morbidity, loss of function, and mortality after repeat fracture. In another study of people recovering from hemiarthroplasty after acute femoral neck fracture, 219 of 459 participants with known fall status—48%—fell at least once within six months; however, fall status was unknown for 384 of 843 trial participants, which limits certainty about the overall rate. These findings support prevention that addresses both bone fragility and the circumstances that cause falls.

What this evidence can and cannot support

The evidence supports structured, preferably supervised exercise as a reasonable part of fracture prevention. It also supports testing exercise within a care pathway that includes fracture-risk assessment, treatment when indicated, and fall-risk or home-hazard reduction.

For people focused on lowering serious fracture risk, the sensible target is a prevention plan with several working parts—not an exercise routine asked to do everyone else's job.

Do not overread OFRA. Its primary endpoint was null, its positive femoral-fracture result was narrower, and routine insurance data missed fractures that did not require hospitalization. The program operated in rural, agriculture-linked German insured populations, so its uptake, costs, and results may not transfer neatly elsewhere. Longer follow-up, greater use of bone-directed treatment, or more complete participation could produce different results, but this trial did not test those scenarios.

The honest conclusion is more useful than a miracle routine: exercise has credible fracture-prevention evidence, with better results in supervised programs. In routine care, the clearest signal came from combining exercise with screening and fall-prevention measures. Build the whole pathway if the goal is fewer serious fractures.