{
    "@context": "https://schema.org",
    "@type": "Dataset",
    "name": "M. Adductor Longus — surface EMG electrode placement",
    "id": "adductor_longus_r",
    "slug": "adductor-longus-r",
    "url": {
        "en": "https://emgguide.de/muscle/adductor-longus-r",
        "de": "https://emgguide.de/de/muscle/adductor-longus-r",
        "viewer3d": "https://emgguide.de/?muscle=adductor_longus_r",
        "json": "https://emgguide.de/muscle/adductor-longus-r.json"
    },
    "names": {
        "latin": "M. Adductor Longus",
        "en": "Adductor Longus",
        "de": "Langer Adduktor"
    },
    "side": "right",
    "region": {
        "key": "HIP",
        "en": "Hip",
        "de": "Hüfte"
    },
    "placementStandard": "adapted from peer-reviewed literature (see source)",
    "source": {
        "url": "",
        "short": "Criswell 2011",
        "citation": "Criswell E. Cram's Introduction to Surface Electromyography. 2nd ed. Jones & Bartlett Learning; 2011. ISBN 978-0-7637-3274-5."
    },
    "electrode": {
        "position": {
            "en": "Medial thigh, approx. 4 cm distal to the pubis; palpate the muscle belly during isometric adduction",
            "de": "Medialer Oberschenkel, ca. 4 cm distal des Os pubis; Muskelbauch bei isometrischer Adduktion palpieren"
        },
        "orientation": {
            "en": "Oblique along the muscle course, 2 cm inter-electrode distance; avoid the anterior midline of the thigh (crosstalk from rectus femoris)",
            "de": "Schräg entlang des Muskelverlaufs, 2 cm Elektrodenabstand; nicht zur Oberschenkelvorderseite hin (Crosstalk M. rectus femoris)"
        },
        "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": "Hip adduction, flexion and external rotation",
            "de": "Adduktion, Flexion und Außenrotation im Hüftgelenk"
        },
        "origin": {
            "en": "Superior ramus of the pubis, ventral to the symphysis",
            "de": "Ramus superior ossis pubis, ventral der Symphyse"
        },
        "insertion": {
            "en": "Linea aspera of the femur (middle third)",
            "de": "Linea aspera des Femurs (mittleres Drittel)"
        },
        "innervation": {
            "en": "Obturator nerve, L2–L4",
            "de": "N. obturatorius, L2–L4"
        }
    },
    "testMovement": {
        "en": "Thigh adduction in side-lying against resistance",
        "de": "Adduktion des Oberschenkels in Seitenlage gegen Widerstand"
    },
    "placementNotes": {
        "source": "Criswell E. Cram's Introduction to Surface Electromyography. 2nd ed. Jones & Bartlett; 2011, p. 367",
        "site": "Hip Adductor (Adductor Longus/Gracilis)",
        "placementType": "quasi-specific",
        "signalCheck": {
            "de": "Knie zusammenpressen (Adduktion); Gehen.",
            "en": "Press the knees together (adduction); walking."
        },
        "crosstalk": {
            "de": [
                "Rectus femoris",
                "Vastus medialis",
                "Adductor magnus"
            ],
            "en": [
                "rectus femoris",
                "vastus medialis",
                "adductor magnus"
            ]
        },
        "artifacts": null
    },
    "mvcTest": {
        "source": "Konrad P. The ABC of EMG. Noraxon; 2005, p. 32",
        "group": "adductors",
        "en": {
            "position": "Supine or seated with flexed legs; a big, stiff roll cushion is pressed between the knees.",
            "fixation": "The cushion itself provides the rigid resistance; pelvis stable.",
            "resistance": "Isometric adduction against the cushion.",
            "control": "—",
            "note": "Konrad tests the adductors as one group (\"Mm. adductores\"); surface EMG does not separate longus, magnus and gracilis."
        },
        "de": {
            "position": "Rückenlage oder sitzend mit gebeugten Beinen; ein großes, steifes Rollkissen wird zwischen den Knien zusammengedrückt.",
            "fixation": "Das Kissen liefert selbst den starren Widerstand; Becken stabil.",
            "resistance": "Isometrische Adduktion gegen das Kissen.",
            "control": "—",
            "note": "Konrad testet die Adduktoren als eine Gruppe („Mm. adductores\"); Oberflächen-EMG trennt Longus, Magnus und Gracilis 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"
}