quadratus femoris muscle

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quadratus femoris

A muscle of the hip/thigh located at the upper lateral border of tuberosity of ischium.
Lateral adduction and rotation of thigh.
L4, L5, S1.
Quadrate tubercle of femur, intertrochanteric crest.

quad·ra·tus fem·o·ris mus·cle

(kwah-drā'tŭs fem'ŏr-is mŭs'ĕl)
Insertion, intertrochanteric ridge; origin, lateral border of tuberosity of ischium; action, rotates thigh laterally; nerve supply, nerve to quadratus femoris (sacral plexus).
Synonym(s): musculus quadratus femoris [TA] .
References in periodicals archive ?
Persistent sciatica induced by quadratus femoris muscle tear and treated by surgical decompression: a case report.
Ischiofemoral impingement (IFI) is characterized by a narrowed space between the ischial tuberosity and the lesser trochanter resulting in repetitive impingement of the quadratus femoris muscle (Figure 4).
Edema of the quadratus femoris muscle may be visible in patients with IFI and some patients may present with fatty infiltration of the quadratus femoris muscle which is sometimes combined with muscle atrophy.
The objective of surgery is to widen the space by resecting the bone from the lesser trochanter or ischium or releasing the quadratus femoris muscle.
Caption: Figure 5 Axial ultrasound image of the left hip showing the borders of the quadratus femoris muscle.
Ischiofemoral impingement syndrome: an entity with hip pain and abnormalities of the quadratus femoris muscle.
Various types of osteosynthesis options available are valgus osteotomy, free or vascularised fibular graft,[2] quadratus femoris muscle pedicle graft,[3] combined osteotomy with fibular graft[2] and Non vascularised cortical autografts.
It would appear the inferior to middle-medial to lateral portion of the hip joint are supplied by branches of the sciatic nerve directly, or through the trunk that is given off to the quadratus femoris muscle.
The periosteum distal to the quadratus femoris muscle is also incised and mobilized posteriorly and distally.
crossing posteriorly to the obturator internus, gemelli and the quadratus femoris muscles (Williams et al.

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