Fracture in the Arm

Description

Mind Map on Fracture in the Arm, created by Fatma Shwaylia on 09/03/2017.
Fatma Shwaylia
Mind Map by Fatma Shwaylia, updated more than 1 year ago
Fatma Shwaylia
Created by Fatma Shwaylia over 7 years ago
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Resource summary

Fracture in the Arm
  1. Anatomy
    1. Muscles
      1. Biceps Brachii
        1. Origin : 1- long head: supraglenoid tubercle of the scapula within the shoulder joint . 2- Short head : Tip of the coracoid process in common with the coracobrachialis
          1. Insertion : 1- by a strong tendon into the posterior rough part of the radial tuberosity . 2- by the bicipital aponeurosis arises from the tendon of the biceps to blend with the deep fascia of the forearm .
            1. Action : Both heads Supination of the flexed forearm Flexion of the elbow joint The short head is a weak flexor of the shoulder joint The long head prevents the upward dislocation of the shoulder joint
              1. Nerve supply : Musculocutaneous nerve .
        2. Coracobrachialis
          1. Origin : Tip of the coracoid process , in common with the short head of the biceps .
            1. Insertion : Middle of medial border of the humerus .
              1. Action : Flexion and adduction of the arm .
                1. Nerve supply : Musculocutaneous Nerve.
          2. Brachilis
            1. Origin : Lower ½ of the front of the humerus Lateral and medial intermuscular septa
              1. Insertion : Ulnar tuberosity
                1. Action : Flexion of the elbow
                  1. Nerve supply : Musculocutaneous nerve Radial nerve supplies a small lateral part
            2. Triceps Brachii
              1. Origin : Long head: infraglenoid tubercle of the scapula Lateral head: upper ½ of the posterior surface of the shaft of the humerus above the spiral groove of the scapula Medial head : posterior surface of the lower ½ of the shaft of the humerus below the spiral groove , back of lateral and medial intermuscular septa
                1. Insertion : The 3 heads fuse together in a common tendon . Into the posterior part of the upper surface of the olecranon process of the ulna
                  1. Action : Powerful extensor of the elbow joint Its main function is to keep the elbow extended when one is pushing an object
                    1. Nerve supply : Each head receives a separate branch from the radial nerve
            3. Arteries
              1. Brachial artery
                1. Origin: continuation of the axillary at the lower border of the teres major .
                  1. Course; Passes downwards and laterally from the medial side of the humerus to the front of the arm .
                    1. Termination Opposite the neck of the radius by dividing into radial and ulnar arteries.
                      1. Branches
                        1. Profunda brachii
                          1. Superior ulnar colllateral.
                            1. Inferior ulnar collateral
                              1. Muscular
                                1. Nutrient artery
                                  1. Terminal
                        2. Nerves
                          1. Anterior compartment of the arm
                            1. AXILLARY
                              1. passes infront the subscapular muscle, to the quadritriangular space into the posterior side of humerus where is meets it companion posterior circumflex humaeral artery and surrounds surgical neck of humerus. so any fracutre will not only lead to hemorrhage but also to damage to this nerve therefore damage to deltoid and teres minor movements. while the radial nerve will move backword through the lower  quadrangular space.
                              2. Radial
                                1. Origin: arises from lower anterior half of humerus .insertion:ulna tuberosity
                                  1. posterior cord of brachial plexus
                                    1. sensory
                                      1. innervates the posterior side of forearms and arms.
                                      2. motor
                                        1. extension of triceps
                                          1. Arises from brachial plexus in root of neck and under the cervix to behind the humerus forming circumflex by passing through the lower triangular spaceand then goes anteriorly into the lateral side of brachialis muscle then continous into the forearms as superficial radial nerve to supply foramrs muscles like brachioradialis muscle and more
                                  2. Musculocatanous
                                    1. root value: c5-c6-c7 (lateral cord)
                                      1. no circumflex unlike the radial and axillary.
                                        1. supplying: bbc muscles : first branch –coracobrachialis second branch-biceps third and last branch-brachials. and then supplies the lateral skin or cutanous of forearms as it continous. not seen only when biceps are removed!!
                                    2. Ulnar
                                      1. ulnar nerve is in very dangerous site cuz its exactly in the elbow joint. so if u had any frature of dislocation of elbow joint then u ulnar nerve is most prone to any sort of damage like hemorrhage.
                                        1. Supplies the last two fingers of the hand
                                      2. Median
                                        1. (lateral and medial cord)
                                          1. no single branch in the arm
                                            1. it does supply or innervate the first 2 fingers on lateral side (thumb). the last 2 fingers by ulner nerve. it is anterior to the medial epicondyl or it sits on the coronoid fossa while the ulner nerve is posterior to medial epicondyl or postrior to coronoid fossa. (it will enter coronoid fossa most medially)
                                  3. Bones
                                    1. Bone cells
                                      1. Osteocyte
                                        1. Maintains bone tissue +play a role in deposition of calcium
                                        2. Osteoblast
                                          1. Forms bone matrix+ have receptors for the parathyroid hormone and found where active bone is being formed.
                                          2. Osteogenic
                                            1. stem cell
                                              1. In low O2 tension they may change into chondrogenic cells
                                              2. Osteoclast
                                                1. resorbs bone
                                              3. Humerus
                                                1. Head of the humerus
                                                  1. surgical neck and anatomical neck
                                                    1. Shaft
                                                      1. Medial and lateral epicondyle
                                                        1. Olecranon and coronoid fossa
                                                          1. greater and lesser tubercles
                                                            1. intertubercle groove between those 2
                                                          2. Bone healing
                                                            1. 1-Formation of fracture hematoma
                                                              1. Complications of healing process
                                                                1. Compartment syndrome
                                                                  1. Neurovascular injury
                                                                    1. Infection
                                                                      1. Post-traumatic arthritis
                                                                        1. Growth abnormalities
                                                                          1. Delayed union
                                                                            1. Nonunion
                                                                              1. Malunion
                                                                            2. 3-Bony callus formation
                                                                              1. 2- Fibro-cartilaginous callus formation (soft tissue callus)
                                                                                1. 4-Bone remodelling
                                                                              2. Exposure therapy
                                                                                1. Helping people to confront their fears
                                                                                  1. Graded Exposure
                                                                                    1. an exposure fear hierarchy
                                                                                      1. Starting with mildly or moderately difficult exposures, then progress to harder ones.
                                                                                    2. Flooding
                                                                                      1. Person is immersed in the fear reflex until the fear itself fades away
                                                                                    3. Fractures
                                                                                      1. A break in the structural continuity of the bone tissue
                                                                                        1. Mechanism
                                                                                          1. single traumatic event
                                                                                            1. Repetitive stress (stress fracture)
                                                                                              1. Abnormal weakening
                                                                                                1. Osteoporosis
                                                                                                  1. Pathological Cause
                                                                                                2. How does a fracture occur?
                                                                                                  1. Clinical Picture
                                                                                                    1. Loss of function
                                                                                                      1. Pain
                                                                                                        1. Deformity
                                                                                                          1. Swelling
                                                                                                            1. Hematoma, Echymosis
                                                                                                              1. Wound
                                                                                                              2. Types
                                                                                                                1. Open
                                                                                                                  1. bony fragments are exposed to external environment by means of a wound (through a skin wound)
                                                                                                                  2. Closed
                                                                                                                    1. fracture fragments are not exposed to outside
                                                                                                                2. Can damage nerves
                                                                                                                  1. NEURAPRAXIA
                                                                                                                    1. Chronic mechanical pressure
                                                                                                                      1. Demyelination of axon
                                                                                                                        1. Spontaneous recovery after few days or weeks
                                                                                                                    2. AXONOTMESIS
                                                                                                                      1. disruption of axons and myelin
                                                                                                                        1. axons degenerate proximally and distally from the area of injury . Distal degeneration is Wallerian degeneration
                                                                                                                          1. Intact neural tube
                                                                                                                            1. Recovery: 18 months
                                                                                                                      2. NEUROTMESIS
                                                                                                                        1. Division of the nerve trunk
                                                                                                                          1. disruption of axons and endoneurial tubes
                                                                                                                            1. A Neuroma is formed (regenerating fibers + Schwann cells + fibroblasts)
                                                                                                                              1. function is never normal
                                                                                                                      3. Different Imaging Modalities
                                                                                                                        1. x-rays
                                                                                                                          1. Radiography “plain films”
                                                                                                                            1. using broad beam ionizing radiation
                                                                                                                            2. Computed axial tomography “CT”
                                                                                                                              1. three-dimensional images of body tissues and organs
                                                                                                                              2. Positron Emission Tomography (PET):
                                                                                                                                1. to create images of the inside of the body by measuring the metabolic activity of the soft tissue adjacent to a fracture site.
                                                                                                                                2. Ultrasound
                                                                                                                                  1. transmitting and receiving high frequency sound waves Image “slices” reconstructed by computer
                                                                                                                                  2. Magnetic Resonance Imaging (MRI):
                                                                                                                                    1. generate detailed images of internal organs and tissues
                                                                                                                                  3. Management
                                                                                                                                    1. Emergency orthopaedic management (day 1)
                                                                                                                                      1. Life and complication saving
                                                                                                                                        1. Closed reduction of a fractured bone
                                                                                                                                          1. to set (reduce) a broken bone without surgery.
                                                                                                                                            1. Anatomical
                                                                                                                                              1. Direct
                                                                                                                                                1. Direct clamp application
                                                                                                                                                  1. Push-pull technique
                                                                                                                                                    1. “Shoehorn technique”
                                                                                                                                                  2. Functional
                                                                                                                                                    1. Indirect
                                                                                                                                                      1. Traction table with image intensifier
                                                                                                                                                        1. Distractor and joysticks
                                                                                                                                                          1. Frames
                                                                                                                                                      2. Help in healing
                                                                                                                                                        1. Decrease pain+infection of a bone
                                                                                                                                                          1. Sedation+ local anesthetic
                                                                                                                                                            1. Anesthetics
                                                                                                                                                              1. To relieve pain
                                                                                                                                                                1. Simple
                                                                                                                                                                  1. Paracetamol
                                                                                                                                                                    1. Aspirin
                                                                                                                                                                    2. NSAIDS
                                                                                                                                                                      1. Ibuprofen
                                                                                                                                                                      2. Weak opioids
                                                                                                                                                                        1. Combinations including codeine phosphate
                                                                                                                                                                        2. Strong opioids
                                                                                                                                                                          1. Morphine sulphate
                                                                                                                                                              2. Monitoring of fracture (days to weeks)
                                                                                                                                                                1. Casts and splints
                                                                                                                                                                  1. plaster cast
                                                                                                                                                                    1. made from plaster or fiberglass, encasing a limb
                                                                                                                                                                      1. orthopedic cast
                                                                                                                                                                    2. synthetic cast
                                                                                                                                                                      1. made from fiberglass or plastic strips.
                                                                                                                                                                      2. cast brace
                                                                                                                                                                        1. made of hard plastic. Inside the brace , soft pads compress or push against the injury
                                                                                                                                                                        2. A splint
                                                                                                                                                                          1. made from slabs of plaster or fiberglass that hold the injury still
                                                                                                                                                                            1. back splint
                                                                                                                                                                              1. A back splint keeps the area immobilized but not compressed
                                                                                                                                                                                1. Helps in healing
                                                                                                                                                                      3. Rehabilitation and treatment of complications (weeks to months)
                                                                                                                                                                        1. Physiotherapy
                                                                                                                                                                          1. Helps shoulder, elbow and wrist to regain full ranges of motion
                                                                                                                                                                            1. Swiss ball exercise
                                                                                                                                                                            2. Strengthening exercises to improve muscle strength and endurance
                                                                                                                                                                              1. Resistive exercises
                                                                                                                                                                              2. Improve hand grip function
                                                                                                                                                                                1. Shoulder, elbow and wrist proprioception exercises
                                                                                                                                                                                  1. Push up against a wall
                                                                                                                                                                              3. Nutrition
                                                                                                                                                                                1. Calcium rich food
                                                                                                                                                                                  1. Magnesium rich food
                                                                                                                                                                                    1. Calcium and vitamin D supplements
                                                                                                                                                                                      1. Zinc rich food
                                                                                                                                                                                        1. Vitamin C rich food
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