The spelling of the word "musculus quadratus femoris" can be explained using the International Phonetic Alphabet (IPA). The first two syllables, "mus" and "cu," are pronounced with the sound /mʌs/ and /kwɑː/, respectively. The following three syllables, "la," "ri," and "us," are pronounced with the sound /lɑː/, /rɪ/, and /ʌs/, respectively. Finally, "quadra" is pronounced with the sound /kwɒdrə/, and "tus" and "femoris" are pronounced with the sounds /tʌs/ and /fɛmərɪs/, respectively. Overall, the spelling of this word accurately reflects its pronunciation using the IPA.
Musculus quadratus femoris, commonly known as the quadratus femoris muscle, is a relatively small muscle located in the posterior hip region. Its name is derived from Latin, where "musculus" means muscle, "quadratus" refers to its square-like shape, and "femoris" signifies its attachment to the femur bone.
The quadratus femoris muscle is deep within the gluteal muscles and is one of the six short muscles that can be found in the hip joint area. It arises from the ischial tuberosity, a bony prominence in the pelvis, and attaches to the posterior aspect of the greater trochanter of the femur, the bony prominence on the upper end of the thigh bone.
The main function of the quadratus femoris muscle is to laterally rotate the thigh at the hip joint. It also assists with stabilizing the hip joint and helps prevent excessive adduction, or movement of the leg towards the midline of the body.
Injuries or dysfunctions of the quadratus femoris muscle are relatively uncommon, but when they do occur, they can cause pain and discomfort in the deep gluteal region and may limit range of motion in the hip joint.
Overall, musculus quadratus femoris plays a crucial role in the movement and stability of the hip joint, contributing to the intricate network of muscles that allow us to walk, run, and perform various activities involving the lower body.
Origin, outer border of tuberosity of ischium; insertion, intertrochanteric ridge; nerve supply, sciatic; action, rotates thigh outward.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.