Pulsed electromagnetic field treatment enhances healing callus biomechanical properties in an animal model of osteoporotic fracture

Bioelectromagnetics · 2014 · Benefit · Low evidence

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BenefitLow evidencePaper 2757

In skeletally mature OVX rats, daily PEMF treatment improved hard callus elastic modulus across fibula fractures by 6 weeks, described as normalizing this mechanical property relative to the delayed healing process. Radiographic evidence indicated improved ha…

Study snapshot

PublicationBioelectromagnetics · 2014

Study typeanimal

Reported directionBenefit

Evidence ratingLow

Abstract

Delayed bone healing has been noted in osteoporosis patients and in the ovariectomized (OVX) rat model of estrogen-depletion osteopenia. Pulsed electromagnetic field (PEMF) devices are clinically approved as an adjunct to cervical fusion surgery in patients at high risk for non-fusion and for the treatment of fracture non-unions. These bone growth stimulating devices also accelerate the healing of fresh fracture repair in skeletally mature normal rats but have not been tested for efficacy to accelerate and/or enhance the delayed bone repair process in OVX rats. The current study tested the hypothesis that daily PEMF treatments would improve the fracture healing response in skeletally mature OVX rats. By 6 weeks of healing, PEMF treatments resulted in improved hard callus elastic modulus across fibula fractures normalizing the healing process in OVX rats with respect to this mechanical property. Radiographic evidence showed an improved hard callus bridging across fibula fractures in OVX rats treated with PEMF as compared to sham treatments. These findings provide a scientific rationale for investigating whether PEMF might improve bone-healing responses in at-risk osteoporotic patients.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal

Effect directionbenefit

PopulationSkeletally mature ovariectomized (OVX) rats (estrogen-depletion osteopenia) with fibula fractures

Sample sizeNot supplied

Exposuredaily PEMF treatments; assessed at 6 weeks of healing

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Fracture healing response
Hard callus elastic modulus (biomechanical property)
Radiographic hard callus bridging across fibula fractures

Limitations

No exposure parameters reported in abstract (e.g., field strength, frequency, waveform).
Sample size not reported in abstract.
Animal model (OVX rat) may not directly generalize to humans.

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": null,
    "source": "pulsed electromagnetic field (PEMF) device/treatment",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "daily PEMF treatments; assessed at 6 weeks of healing"
  },
  "population": "Skeletally mature ovariectomized (OVX) rats (estrogen-depletion osteopenia) with fibula fractures",
  "sample_size": null,
  "outcomes": [
    "Fracture healing response",
    "Hard callus elastic modulus (biomechanical property)",
    "Radiographic hard callus bridging across fibula fractures"
  ],
  "main_findings": "In skeletally mature OVX rats, daily PEMF treatment improved hard callus elastic modulus across fibula fractures by 6 weeks, described as normalizing this mechanical property relative to the delayed healing process. Radiographic evidence indicated improved hard callus bridging in PEMF-treated OVX rats compared with sham-treated controls.",
  "effect_direction": "benefit",
  "limitations": [
    "No exposure parameters reported in abstract (e.g., field strength, frequency, waveform).",
    "Sample size not reported in abstract.",
    "Animal model (OVX rat) may not directly generalize to humans."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "pulsed electromagnetic field",
    "PEMF",
    "osteoporosis",
    "ovariectomized rat",
    "fracture healing",
    "callus",
    "biomechanics",
    "elastic modulus",
    "radiography",
    "bone growth stimulation"
  ],
  "suggested_hubs": [
    {
      "slug": "osteoporosis-bone-healing",
      "weight": 0.86,
      "reason": "Animal study of PEMF effects on osteoporotic fracture healing outcomes."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1002/bem.21855
PubMed: 24764277

Read the original paper →

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