{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "name": "M. Brachioradialis — surface EMG electrode placement",
    "id": "brachioradialis_r",
    "slug": "brachioradialis-r",
    "url": {
        "en": "https://emgguide.de/muscle/brachioradialis-r",
        "de": "https://emgguide.de/de/muscle/brachioradialis-r",
        "viewer3d": "https://emgguide.de/?muscle=brachioradialis_r",
        "json": "https://emgguide.de/muscle/brachioradialis-r.json"
    },
    "names": {
        "latin": "M. Brachioradialis",
        "en": "Brachioradialis",
        "de": "Oberarmspeichenmuskel"
    },
    "side": "right",
    "region": {
        "key": "FOREARM",
        "en": "Forearm",
        "de": "Unterarm"
    },
    "placementStandard": "adapted from peer-reviewed literature (see source)",
    "source": {
        "url": "https://doi.org/10.3390/s21217322",
        "short": "Merlo et al. 2021",
        "citation": "Merlo A, Bo MC, Campanini I. Electrode Size and Placement for Surface EMG Bipolar Detection from the Brachioradialis Muscle: A Scoping Review. Sensors (Basel). 2021;21(21):7322."
    },
    "electrode": {
        "position": {
            "en": "On the muscle belly slightly distal to the innervation zone in the proximal third (line lateral epicondyle – radial styloid process), on the longitudinal midline; avoid the most proximal part of the belly",
            "de": "Am Muskelbauch leicht distal der Innervationszone im proximalen Drittel (Linie Epicondylus lateralis – Processus styloideus radii), auf der Längsmittellinie; den ganz proximalen Bauchanteil meiden"
        },
        "orientation": {
            "en": "Parallel to the radius",
            "de": "Parallel zum Radius"
        },
        "sensorRules": "bipolar Ag/AgCl, ≤ 10 mm conductive diameter, 20 mm inter-electrode distance, parallel to fibres, reference electrode on bone (SENIAM)"
    },
    "landmarks": null,
    "anatomy": {
        "function": {
            "en": "Elbow flexion, pronation/supination to neutral position",
            "de": "Flexion im Ellenbogengelenk, Pronation/Supination in Mittelstellung"
        },
        "origin": {
            "en": "Lateral margin of the humerus (distal), lateral intermuscular septum",
            "de": "Margo lateralis des Humerus (distal), Septum intermusculare laterale"
        },
        "insertion": {
            "en": "Styloid process of the radius",
            "de": "Processus styloideus radii"
        },
        "innervation": {
            "en": "Radial nerve (posterior cord), C5–C7",
            "de": "N. radialis (Fasciculus posterior), C5–C7"
        }
    },
    "testMovement": {
        "en": "Elbow flexion in neutral position (thumb up) against resistance",
        "de": "Ellenbogenflexion in Mittelstellung (Daumen nach oben) gegen Widerstand"
    },
    "placementNotes": {
        "source": "Criswell E. Cram's Introduction to Surface Electromyography. 2nd ed. Jones & Bartlett; 2011, p. 321",
        "site": "Brachioradialis",
        "placementType": "quasi-specific",
        "signalCheck": {
            "de": "Unterarm beugen.",
            "en": "Flex the forearm."
        },
        "crosstalk": {
            "de": [
                "Extensor carpi radialis longus/brevis — nach Criswell ein erhebliches Problem an diesem Site"
            ],
            "en": [
                "extensor carpi radialis longus/brevis — a major issue at this site per Criswell"
            ]
        },
        "artifacts": null
    },
    "mvcTest": {
        "source": "Konrad P. The ABC of EMG. Noraxon; 2005, p. 31",
        "group": "biceps",
        "en": {
            "position": "Seated or kneeling in front of a bench, elbow at about 90°, forearm supinated.",
            "fixation": "Very stable fixation of elbow and trunk; the upper arm stays vertical at the side.",
            "resistance": "Rigid resistance under the wrist (strap to the floor, bar or manual), elbow flexion against it.",
            "control": "Use the latissimus dorsi test as a control exercise.",
            "note": "Without elbow and trunk fixation the effort leaks into the shoulder and the biceps never reaches its maximum."
        },
        "de": {
            "position": "Sitzend oder kniend vor einer Bank, Ellbogen etwa 90°, Unterarm supiniert.",
            "fixation": "Sehr stabile Fixierung von Ellbogen und Rumpf; der Oberarm bleibt senkrecht am Körper.",
            "resistance": "Starrer Widerstand unter dem Handgelenk (Gurt zum Boden, Stange oder manuell), Ellbogenflexion dagegen.",
            "control": "Als Kontrollübung den Latissimus-dorsi-Test mitlaufen lassen.",
            "note": "Ohne Ellbogen- und Rumpffixierung weicht die Kraft in die Schulter aus, der Biceps erreicht sein Maximum nicht."
        }
    },
    "measurability": "surface EMG",
    "license": "Free to cite with attribution to emgguide.de. Electrode placements based on SENIAM (Hermens et al. 2000) and the cited literature; not an official SENIAM product; not a substitute for medical advice.",
    "publisher": {
        "name": "EMG Guide (menios GmbH)",
        "url": "https://emgguide.de/"
    },
    "dateModified": "2026-10-21"
}