{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "name": "M. Extensor Digitorum — surface EMG electrode placement",
    "id": "extensor_digitorum_r",
    "slug": "extensor-digitorum-r",
    "url": {
        "en": "https://emgguide.de/muscle/extensor-digitorum-r",
        "de": "https://emgguide.de/de/muscle/extensor-digitorum-r",
        "viewer3d": "https://emgguide.de/?muscle=extensor_digitorum_r",
        "json": "https://emgguide.de/muscle/extensor-digitorum-r.json"
    },
    "names": {
        "latin": "M. Extensor Digitorum",
        "en": "Extensor Digitorum",
        "de": "Fingerstrecker"
    },
    "side": "right",
    "region": {
        "key": "FOREARM",
        "en": "Forearm",
        "de": "Unterarm"
    },
    "placementStandard": "adapted from peer-reviewed literature (see source)",
    "source": {
        "url": "https://doi.org/10.3389/fphys.2015.00279",
        "short": "Farina et al. 2015",
        "citation": "Farina D, Kallenberg LA, Holobar A. Extracting extensor digitorum communis activation patterns using high-density surface electromyography. Front Physiol. 2015;6:279."
    },
    "electrode": {
        "position": {
            "en": "50% on line from lateral epicondyle to the ulna",
            "de": "50% auf Linie vom lateralen Epicondylus zur Ulna"
        },
        "orientation": {
            "en": "Parallel to the forearm (dorsal)",
            "de": "Parallel zum Unterarm (dorsal)"
        },
        "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": "Extension of fingers II-V at MCP joints, wrist dorsiflexion",
            "de": "Extension der Finger II–V in MCP-Gelenken, Dorsalextension im Handgelenk"
        },
        "origin": {
            "en": "Lateral epicondyle of the humerus",
            "de": "Epicondylus lateralis humeri"
        },
        "insertion": {
            "en": "Dorsal aponeurosis of fingers II-V",
            "de": "Dorsalaponeurose der Finger II–V"
        },
        "innervation": {
            "en": "Posterior interosseous nerve from the radial nerve, C7–C8",
            "de": "N. interosseus posterior aus dem N. radialis, C7–C8"
        }
    },
    "testMovement": {
        "en": "Finger extension against resistance with extended wrist",
        "de": "Finger strecken gegen Widerstand bei gestrecktem Handgelenk"
    },
    "placementNotes": {
        "source": "Criswell E. Cram's Introduction to Surface Electromyography. 2nd ed. Jones & Bartlett; 2011, p. 327",
        "site": "Extensor Digitorum",
        "placementType": "quasi-specific",
        "signalCheck": {
            "de": "Finger strecken.",
            "en": "Extend the fingers."
        },
        "crosstalk": {
            "de": [
                "Extensor digiti minimi",
                "Extensor carpi ulnaris (eine distale Lage trennt die Fingerextensoren besser von den Handgelenkflexoren)"
            ],
            "en": [
                "extensor digiti minimi",
                "extensor carpi ulnaris (a distal placement separates the finger extensors better from the wrist flexors)"
            ]
        },
        "artifacts": null
    },
    "mvcTest": {
        "source": "Konrad P. The ABC of EMG. Noraxon; 2005, p. 31",
        "group": "forearm_extensors",
        "en": {
            "position": "Seated or kneeling in front of a bench with the forearm resting on a stable support.",
            "fixation": "Forearm fully supported; wrist free to work against the resistance.",
            "resistance": "Manual resistance, a barbell or a cable/belt against the wrist or hand.",
            "control": "Use the latissimus dorsi and pectoralis major tests as control exercises.",
            "note": "Konrad treats the forearm flexors and extensors as one group; wrist flexion for the flexors, wrist extension for the extensors."
        },
        "de": {
            "position": "Sitzend oder kniend vor einer Bank, der Unterarm liegt auf einer stabilen Unterlage.",
            "fixation": "Unterarm vollständig aufgelegt; das Handgelenk arbeitet frei gegen den Widerstand.",
            "resistance": "Manueller Widerstand, Hantelstange oder Seilzug/Gurt gegen Handgelenk oder Hand.",
            "control": "Als Kontrollübungen die Tests für Latissimus dorsi und Pectoralis major mitlaufen lassen.",
            "note": "Konrad fasst Unterarm-Flexoren und -Extensoren als eine Gruppe: Handgelenksflexion für die Flexoren, Handgelenksextension für die Extensoren."
        }
    },
    "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"
}