{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "name": "M. Gluteus Maximus — surface EMG electrode placement",
    "id": "gluteus_maximus_r",
    "slug": "gluteus-maximus-r",
    "url": {
        "en": "https://emgguide.de/muscle/gluteus-maximus-r",
        "de": "https://emgguide.de/de/muscle/gluteus-maximus-r",
        "viewer3d": "https://emgguide.de/?muscle=gluteus_maximus_r",
        "json": "https://emgguide.de/muscle/gluteus-maximus-r.json"
    },
    "names": {
        "latin": "M. Gluteus Maximus",
        "en": "Gluteus Maximus",
        "de": "Großer Gesäßmuskel"
    },
    "side": "right",
    "region": {
        "key": "HIP",
        "en": "Hip",
        "de": "Hüfte"
    },
    "placementStandard": "SENIAM (Hermens et al. 2000)",
    "source": {
        "url": "http://seniam.org/gluteusmaximus.html",
        "short": "SENIAM (Hermens 2000)",
        "citation": "Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G. Development of recommendations for SEMG sensors and sensor placement procedures. J Electromyogr Kinesiol. 2000;10(5):361-74."
    },
    "electrode": {
        "position": {
            "en": "50% on line between sacrum and greater trochanter",
            "de": "50% auf Linie zwischen Sacrum und Trochanter major"
        },
        "orientation": {
            "en": "Along the line posterior superior iliac spine–middle of the posterior thigh",
            "de": "Richtung Linie Spina iliaca posterior superior–Mitte der Oberschenkelrückseite"
        },
        "sensorRules": "bipolar Ag/AgCl, ≤ 10 mm conductive diameter, 20 mm inter-electrode distance, parallel to fibres, reference electrode on bone (SENIAM)"
    },
    "landmarks": {
        "rule": "electrode at fraction t of the line from a to b",
        "a": {
            "id": "sacrum",
            "en": "Sacrum",
            "de": "Kreuzbein",
            "model_xyz_m": null
        },
        "b": {
            "id": "greater_trochanter",
            "en": "Greater trochanter",
            "de": "Trochanter major",
            "model_xyz_m": null
        },
        "t": 0.5,
        "extra": null,
        "note": null,
        "coordinates": "model space of the 3D viewer (metres, y up); for orientation only, not body measurements"
    },
    "anatomy": {
        "function": {
            "en": "Hip extension and external rotation, pelvic stabilization, trunk erection",
            "de": "Extension und Außenrotation im Hüftgelenk, Stabilisation des Beckens, Aufrichtung des Rumpfes"
        },
        "origin": {
            "en": "Os sacrum (dorsal), Os ilium (behind posterior gluteal line), sacrotuberous ligament, thoracolumbar fascia",
            "de": "Os sacrum (dorsal), Os ilium (hinter Linea glutea posterior), Lig. sacrotuberale, Fascia thoracolumbalis"
        },
        "insertion": {
            "en": "Iliotibial tract, gluteal tuberosity of the femur",
            "de": "Tractus iliotibialis, Tuberositas glutea des Femurs"
        },
        "innervation": {
            "en": "Inferior gluteal nerve, L5–S2",
            "de": "N. gluteus inferior, L5–S2"
        }
    },
    "testMovement": {
        "en": "Hip extension from prone position against resistance with flexed knee",
        "de": "Hüftextension aus Bauchlage gegen Widerstand bei gebeugtem Knie"
    },
    "placementNotes": {
        "source": "Criswell E. Cram's Introduction to Surface Electromyography. 2nd ed. Jones & Bartlett; 2011, p. 353",
        "site": "Gluteus Maximus",
        "placementType": "specific",
        "signalCheck": {
            "de": "In Bauchlage oder im Stand (Hände an der Wand) das Bein nach hinten strecken; alternativ Treppensteigen, Aufstehen vom Stuhl, Außenrotation des Oberschenkels.",
            "en": "Prone or standing (hands on the wall), extend the leg backwards; alternatively stair stepping, sit-to-stand, external rotation of the thigh."
        },
        "crosstalk": {
            "de": [
                "nach Criswell in der Regel unproblematisch"
            ],
            "en": [
                "usually not a problem per Criswell"
            ]
        },
        "artifacts": {
            "de": "Dickes Fettpolster dämpft das Signal; Elektrodenverrutschen und Bewegungsartefakte beim Gehen.",
            "en": "A thick fat pad attenuates the signal; electrode slippage and movement artefact during walking."
        }
    },
    "mvcTest": {
        "source": "Konrad P. The ABC of EMG. Noraxon; 2005, p. 32",
        "group": "gluteus_maximus",
        "en": {
            "position": "Prone, hip hyperextension of about 20° with slightly outward-rotated leg; test with extended and with flexed knee.",
            "fixation": "Pelvis fixed on the bench.",
            "resistance": "Manual resistance or belt against the back of the thigh, hip extension against it.",
            "control": "The prone erector spinae test is the control exercise for the gluteus maximus.",
            "note": "Konrad: the hyperextension position (~20°) is important; perform both knee positions."
        },
        "de": {
            "position": "Bauchlage, Hüfthyperextension etwa 20° mit leicht außenrotiertem Bein; mit gestrecktem und mit gebeugtem Knie testen.",
            "fixation": "Becken auf der Bank fixiert.",
            "resistance": "Manueller Widerstand oder Gurt an der Oberschenkelrückseite, Hüftextension dagegen.",
            "control": "Der Erector-spinae-Test in Bauchlage ist die Kontrollübung für den Glutaeus maximus.",
            "note": "Konrad: die Hyperextensionsposition (~20°) ist wichtig; beide Kniepositionen ausführen."
        }
    },
    "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"
}