In this article we will discuss about Stylohyoid muscle. So let’s get started.
Part of suprahyoid muscle. It originates from the posterior and lateral surface of the styloid process of temporal bone and gets inserted into the hyoid bone at greater cornu superior to omohyoid muscle. It is innervated by the facial nerve and artery supply is through the branches of facial, occipital and lingual artery. It’s chief action is elevation of hyoid bone facilitating swallowing.
In this article we will discuss about Scalenus anterior muscle. So let’s get started.
Scalenus anterior muscle
It originated from the anterior tubercle of transverse processes of third, fourth, fifth and sixth cervical vertebrae and gets inserted into scalene tubercle of first rib and upper surface of second rib anterior to subclavian groove. It is innervated by the anterior ramus of C5-C6 and artery supply is through the ascending cervical artery. It’s chief action is elevation of first and ipsilateral flexion of neck. Clinically hypertonic scalene anterior muscle causes compression of brachial plexus and subclavian artery leading to scalenus anterior syndrome.
In this article we will discuss about Psoas major muscle. So let’s get started.
Psoas major muscle
It is divided into two part; superficial part arises from the lateral surface of T12, L1-L4 and neighbouring intervertebral discs and deep part originates from the transverse process of L1-L5 and gets inserted into the lesser trochanter of femur along with iliacus, thereby forming iliopsoas. It is innervated by the lumbar plexus, L1-L3 and artery supply is through the lumbar branch of iliolumbar artery. It’s chief action is flexion of hip along with that it also causes lateral rotation and adduction of hip and unilateral contraction bends the trunk laterally while bilateral contraction raises the trunk from supine position. Clinically, Psoas syndrome is a very rare condition occurs when psoas muscle gets injured causing lower back pain. It is often misdiagnosed. Athletes are more prone to this disease. Physiotherapy is treatment of choice for psoas syndrome.
In this article we will discuss about Iliacus muscle. So let’s get started.
It originates from the upper 2/3rd of iliac fossa and also from anterior inferior iliac spine and gets inserted into the base of lesser trochanter of femur. It is innervated by femoral nerve and artery supply is through the medial femoral circumflex artery and iliac branch of iliolumbar artery. It’s chief action is flexion of hip and flexion of trunk.
In this article we will discuss about Anatomical snuff box. So let’s get started.
Anatomical snuff box
It is a small triangular depression present on the dorsal and lateral (radial) aspect of hand. It’s medial boundary is formed by extensor pollicis longus, lateral boundary by extensor pollicis brevis and abductor pollicis longus, proximal border by styloid process of radius and distal border is formed by merging of lateral and medial border forming isosceles triangle. It’s floor is made by scaphoid and trapezium bone. It is innervated by the radial nerve, artery supply is through the radial artery and venous supply is through the cephalic vein. Clinically it is a common site for FOOSH injury(fall on outstretched hand).