Effect of 900MHz electromagnetic fields emitted from cellular phones on fracture healing: an experimental study on rats.

Abstract

OBJECTIVE: The aim of this study was to investigate the effect of electromagnetic fields (EMFs) at 900 MHz frequencies on bone fracture healing. METHODS: The study included 30 adult male Wistar albino rats (average weight: 256 g) divided into two equal groups. Transverse fracture was created manually by pressing a finger on the right tibias of all rats and fractures were fixed intramedullary using a K-wire. Rats in Group 1 were exposed to EMF at 900 MHz frequency 30 minutes a day, 5 days a week for 8 weeks. Group 2, the control group, was kept under the same experimental conditions without EMF exposure. Radiological, mechanical and histological examination of tibial fracture healing was performed. RESULTS: There was a significant difference between radiological, histological and manual biomechanical scores of the study and control groups (p=0.020, p=0.006 and p=0.032, respectively). All scores were lower in the study group than the control group. CONCLUSION: Results of this study demonstrate that EMF at 900 MHz of frequency emitted from cellular phones has a significantly negative effect on bone fracture healing in a rat tibia model.

AI evidence extraction

Main findings

Compared with controls, rats exposed to 900 MHz EMF had significantly lower radiological, histological, and manual biomechanical fracture-healing scores (p=0.020, p=0.006, p=0.032).

Outcomes measured

• Radiological scores of tibial fracture healing
• Histological scores of tibial fracture healing
• Manual biomechanical (mechanical) scores of tibial fracture healing

Limitations

• No SAR or exposure intensity metrics reported in abstract
• Animal model; generalizability to humans not addressed in abstract
• Exposure described as EMF at 900 MHz but specific device/setup details not provided in abstract

Suggested hubs

• mobile-phones (0.9)
  Exposure described as 900 MHz EMF emitted from cellular phones.

{
    "study_type": "animal",
    "exposure": {
        "band": "RF",
        "source": "mobile phone",
        "frequency_mhz": 900,
        "sar_wkg": null,
        "duration": "30 minutes/day, 5 days/week for 8 weeks"
    },
    "population": "Adult male Wistar albino rats with experimentally induced right tibial transverse fractures fixed with intramedullary K-wire",
    "sample_size": 30,
    "outcomes": [
        "Radiological scores of tibial fracture healing",
        "Histological scores of tibial fracture healing",
        "Manual biomechanical (mechanical) scores of tibial fracture healing"
    ],
    "main_findings": "Compared with controls, rats exposed to 900 MHz EMF had significantly lower radiological, histological, and manual biomechanical fracture-healing scores (p=0.020, p=0.006, p=0.032).",
    "effect_direction": "harm",
    "limitations": [
        "No SAR or exposure intensity metrics reported in abstract",
        "Animal model; generalizability to humans not addressed in abstract",
        "Exposure described as EMF at 900 MHz but specific device/setup details not provided in abstract"
    ],
    "evidence_strength": "low",
    "confidence": 0.83999999999999996891375531049561686813831329345703125,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "900 MHz",
        "RF-EMF",
        "cellular phone",
        "fracture healing",
        "tibia",
        "rat",
        "bone healing",
        "radiological",
        "histological",
        "biomechanical"
    ],
    "suggested_hubs": [
        {
            "slug": "mobile-phones",
            "weight": 0.90000000000000002220446049250313080847263336181640625,
            "reason": "Exposure described as 900 MHz EMF emitted from cellular phones."
        }
    ]
}

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