Humerus Bone
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Humerus Bone

Introduction The humerus, the biggest bone in the upper extremities, makes up the human brachium, or arm. It articulates with the radius and ulna distally at the elbow joint and proximally at the glenohumeral (GH) joint with the glenoid. The humerus’s most proximal portion is its head, which connects to the glenoid cavity on the…

Facial muscles
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Facial muscles

Introduction The facial muscles, also known as craniofacial muscles, are a group of approximately twenty flat skeletal muscles that are located beneath the skin of the scalp and face. The majority of them originate in the skull’s bones or fibrous structures before spreading to the skin. The facial muscles are a collection of striated skeletal…

Spinal Accessory Nerve
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Spinal Accessory Nerve Palsy

Spinal Accessory Nerve Palsy, also known as Accessory Nerve Palsy, is a neurological condition characterized by the dysfunction of the spinal accessory nerve (cranial nerve XI). This nerve is primarily responsible for innervating the sternocleidomastoid and trapezius muscles, which are essential for head rotation, shoulder elevation, and certain movements of the neck and scapula. Damage…

Neck muscles
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Neck Muscles

Introduction The neck muscles are a complex group of muscles that play a vital role in supporting and moving the head, maintaining posture, and facilitating respiration. They are categorized into several groups based on their location and function: the superficial muscles, the deep muscles, and the muscles of the suboccipital region. The neck muscles extend…

Cubitus Varus Deformity

Cubitus Varus Deformity

Definition for Cubitus Varus Deformity Cubitus varus deformity, often referred to as “gunstock deformity,” is a condition characterized by an inward angulation of the extended elbow. This deformity typically arises as a complication following supracondylar fractures of the humerus, particularly in children.Cubitus valgus is the “opposite” condition. This is a trilobate asymmetry of the elbow,…

Rotator Cuff Muscles
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Rotator Cuff Muscle

Introduction: Structure and Function of rotator cuff muscles: Subscapularis muscle: Description of subscapularis muscle: Origin: Insertion: Nerve Supply: Blood Supply: Lymphatics: Action: Function: Pathologies: Tests For Subscapularis: Lift-Off Test: Bear Hug Test: Belly Press Test: Treatment of subscapularis: Infraspinatus muscle: Description: Origin: Insertion: Nerve Supply: Blood Supply: Lymphatics: Action: Function: Clinical Relevance: Assessment: Teres minor…

Chest muscles
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Chest Muscles

The chest muscles, also known as the pectoral muscles, play a crucial role in the upper body’s strength and functionality. These muscles are primarily responsible for movements of the shoulder joint, including flexion, adduction, and rotation of the arm. The pectoral region is found on the anterior chest wall. The serratus anterior, subclavius, pectoralis major,…

Gluteal muscles
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Gluteal Muscles

Introduction The gluteal muscles, commonly known as the glutes, comprise a group of three muscles located in the buttock region. These muscles play a pivotal role in a variety of movements involving the hip and thigh, contributing significantly to posture, stability, and locomotion. Anatomically significant, the gluteal region is located on the posterior aspect of…

Back muscles
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Back muscles

Introduction The Back muscles are a group of strong, paired muscles located on the trunk’s posterior aspect. They provide spinal movement, trunk stability, and coordination of limb and trunk movements.Back muscles are divided into two major groups: Extrinsic (superficial) back muscles are those that are closest to the skin on the back. These muscles are…