{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "name": "M. Semimembranosus — surface EMG electrode placement",
    "id": "semimembranosus_l",
    "slug": "semimembranosus-l",
    "url": {
        "en": "https://emgguide.de/muscle/semimembranosus-l",
        "de": "https://emgguide.de/de/muscle/semimembranosus-l",
        "viewer3d": "https://emgguide.de/?muscle=semimembranosus_l",
        "json": "https://emgguide.de/muscle/semimembranosus-l.json"
    },
    "names": {
        "latin": "M. Semimembranosus",
        "en": "Semimembranosus",
        "de": "Plattsehnenmuskel"
    },
    "side": "left",
    "region": {
        "key": "THIGH_POSTERIOR",
        "en": "Thigh Posterior",
        "de": "Oberschenkel Hinten"
    },
    "placementStandard": "none: no documented surface EMG electrode position for this muscle (no SENIAM recommendation, no peer-reviewed source)",
    "source": null,
    "electrode": {
        "position": {
            "en": null,
            "de": null
        },
        "orientation": {
            "en": null,
            "de": null
        },
        "sensorRules": null
    },
    "landmarks": null,
    "anatomy": {
        "function": {
            "en": "Knee flexion, hip extension, internal rotation of the lower leg with flexed knee",
            "de": "Flexion im Kniegelenk, Extension im Hüftgelenk, Innenrotation des Unterschenkels bei gebeugtem Knie"
        },
        "origin": {
            "en": "Ischial tuberosity (lateral facet)",
            "de": "Tuber ischiadicum (laterale Facette)"
        },
        "insertion": {
            "en": "Medial tibial condyle (posterior), oblique popliteal ligament, fascia of M. popliteus",
            "de": "Condylus medialis tibiae (posterior), Lig. popliteum obliquum, Fascia des M. popliteus"
        },
        "innervation": {
            "en": "Tibial division of the sciatic nerve, L5–S2",
            "de": "Tibialisanteil des N. ischiadicus, L5–S2"
        }
    },
    "testMovement": {
        "en": "Knee flexion in prone position against resistance with internal rotation",
        "de": "Knieflexion in Bauchlage gegen Widerstand mit Innenrotation"
    },
    "placementNotes": null,
    "mvcTest": {
        "source": "Konrad P. The ABC of EMG. Noraxon; 2005, p. 32",
        "group": "hamstrings",
        "en": {
            "position": "Prone, unilateral knee flexion held at about 20–30° knee flexion.",
            "fixation": "Very good hip fixation (belt or a heavy person holding the pelvis).",
            "resistance": "Manual resistance or strap at the heel, knee flexion against it.",
            "control": "The prone erector spinae test is the important check exercise.",
            "note": "Konrad tests the hamstrings as one group (\"Mm. ischiocrurales\"); surface EMG does not separate the medial and lateral heads well."
        },
        "de": {
            "position": "Bauchlage, einseitige Kniebeugung, gehalten bei etwa 20–30° Kniebeugung.",
            "fixation": "Sehr gute Hüftfixierung (Gurt oder eine schwere Person hält das Becken).",
            "resistance": "Manueller Widerstand oder Gurt an der Ferse, Kniebeugung dagegen.",
            "control": "Der Erector-spinae-Test in Bauchlage ist die wichtige Kontrollübung.",
            "note": "Konrad testet die Hamstrings als eine Gruppe („Mm. ischiocrurales\"); Oberflächen-EMG trennt medialen und lateralen Anteil nur schlecht."
        }
    },
    "measurability": "no documented surface EMG electrode position",
    "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"
}