The elbow complex is composed of three joints that allow hinge and rotational movements. It includes the humeroulnar joint formed by the trochlea of the humerus articulating with the ulna, the humeroradial joint formed by the capitulum articulating with the radius, and the proximal and distal radioulnar joints. Various ligaments like the medial and lateral collateral ligaments stabilize the elbow joints. Muscles like the triceps, brachialis, and biceps are involved in elbow flexion while the triceps and anconeus extend the elbow. The pronators and supinators control forearm rotation. Injuries like tennis elbow or pulled elbow in
summary of Anatomy and Biomechanics of the Elbow joint (or) complex. This slide prepare for medical student purposes. All the concepts are explained in practically. THIS PPT FULLY SHOW IN ONLY DESKTOP VIEW.
Elbow complex is designed to serve hand.
They provide MOBILITY for Hand in space by apparent shortening and Lengthening of upper extremity.
They provide Stability for skillful and forceful movements
Biomwchanics of wrist and hand
- Kinematics and Kinetics of joints including flexion and extension mechanism
-Pathomechanics
- Prehension
-Functional position of wrist
Extensor mechanism of finger, very easy notes. Referred from cynthia norkin. In this ppt in last two slides u can see the identify the parts. Its like a quiz for candidates who studying this ppt. They can able to know that how well they prepared this topic.
Thank you, From Liki pedia
(A student physiotherapist)
THis PPT will give you knowledge about the principles of shoulder; articulating surface, motions, ligamentous structure and musculature structure that related to shoulder region.
summary of Anatomy and Biomechanics of the Elbow joint (or) complex. This slide prepare for medical student purposes. All the concepts are explained in practically. THIS PPT FULLY SHOW IN ONLY DESKTOP VIEW.
Elbow complex is designed to serve hand.
They provide MOBILITY for Hand in space by apparent shortening and Lengthening of upper extremity.
They provide Stability for skillful and forceful movements
Biomwchanics of wrist and hand
- Kinematics and Kinetics of joints including flexion and extension mechanism
-Pathomechanics
- Prehension
-Functional position of wrist
Extensor mechanism of finger, very easy notes. Referred from cynthia norkin. In this ppt in last two slides u can see the identify the parts. Its like a quiz for candidates who studying this ppt. They can able to know that how well they prepared this topic.
Thank you, From Liki pedia
(A student physiotherapist)
THis PPT will give you knowledge about the principles of shoulder; articulating surface, motions, ligamentous structure and musculature structure that related to shoulder region.
This topic is related to the joints.
it is a type of synovial joint.
it is a ball and socket type.
This is very sensative joint and easy to have fracture to this part.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
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Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
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MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
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Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
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Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
2. INTRODUCTION
• The elbow complex is composed of humero-ulnar, humero-radial,
proximal and distal radioulnar joint.
• The elbow joint is considered as a compound joint that functions as a
modified Or loose hinge joint.
• The proximal and distal radio-ulnar joints are linked and function as
one joint.
3. Articulations
Humero-ulnar joint
• Trochlea present on the anterior aspect of distal humerus articulates with
ulna to form humeroulnar joint.
• Coronoid fossa present just above the trochlea is designed to receive the
coronoid process of ulna at the end of elbow flexion range of motion.
• Posteriorly the distal humerus has olecranon fossa to receive the olecranon
process of ulna at the end of elbow extension.
5. Humero-radial joint
• The capitulum located on the anterio-lateral surface of distal humerus
articulates with the head of radius.
• Radial fossa is present just above the capitulum is designed to receive
the head of radius in elbow flexion.
• The trochlea and capitulum is seperated by capitulotrochlear groove.
6.
7. SUPERIOR RADIOULNAR JOINT
ARTICULATION
• The Radial notch on Ulna articulate with Head of Radius along with
Annular Ligament.
LIGAMENTS
• Annular Ligament-----circle the head of Radius and keeps the
Ulna together.
• Quadrate Ligament----extends from the Inferior edge of radial
notch to Neck of Radius
• Oblique cord------attached to inferior part of Radial notch on
Ulna to just below Radial Tuberosity
8.
9. INFERIOR RADIOULNAR JOINT
ARTICULATION
• The Ulnar notch of Radius articulates with head of Ulna along with
Articular Disc.
LIGAMENTS
• Anterior Radio Ulnar Ligament----attached to anterior
aspect just above the Ulnar head to above Ulnar notch.
• Posterior Radio Ulnar Ligament---attached to posterior
part of Ulnar head to above Ulnar notch.
• Interosseous Membrane---binds the shaft of Radius and Ulna
together.
• An articular disc lies in between distal end of ulna called… TFCC-
Traingular fibricartilagenous complex.
12. Interosseous membrane
• The radius and ulna are bound together by the interosseous
membrane of the forearm.
• The primary function of interosseous membrane are bind the radius
to ulna,serve as a stable attachment site for several extrinsic muscles of
hand and provide mechanism for transmitting force proximally
through the upper limb.
13. The interrosseous membrane
shunts some of the compressive
forces radius to ulna.
In this way interrosseous
membrane helps to protect the
radio-humeral jt from compressive
forces.
14. The fibres of interrosseous
membrane are not directed in such
a way as to resist distally applied
forces onto the radius
The distal pull from the radius
slackens the membrane rather than
tenses.
15. • The other structures contribute such as the oblique cord, annular
ligament and brachioradialis to accept and compensate the distractive
force.
• The contraction of brachioradialis muscle helps
in stabilising the radial head against capitulum.
16. LIGAMENTS
MEDIAL COLLATERAL LIGAMENT
It consists of anterior , posterior and transverse bundles.
The anterior fibres arise from the anterior part of medial epicondyle and insert
on medial part of the coronoid process of ulna.
The posterior fibres of MCL attach to the posterior aspect of medial epicondyle of
humerus
The tranverse fibres are from olecranon process to the coronoid process of ulna.
.
17.
18. Lateral collateral ligamentous comlplex
It includes lateral collateral ligament,the annular ligament and lateral
ulnar collateral ligament.
The LCL extends from the inferior aspect of lateral epicondyle of
humerus to merge with annnular ligament.
20. •MCL stabilizes the joint
against lateral forces or
valgus stress.
•Mostly MCL are more
prone to injury.
•LCL stabilizes elbow
against varus forces.
21. Carrying angle
• The angle formed beteween the long axis of humerus and long axis of
foearm , an acute angle is formed medially when at the elbow.
• It is formed as the trochlear medial aspect extends more distally than
does the lateral aspect which results in lateral deviation of ulna to
humerus.
22. • It is more in females as comparitively women possess less height than
males….. Consequently the shorter forearm bones , the greater the
carrying angle.
• The medial flange of the trochlea longer in a shorter person so more
carrying angle.
Normal values
In females- 10 - 15 degress
• In males- 5-10 degress.
23.
24. ELBOW
FLEXORS
.
BRACHIALIS – arises from anterior
surface of the lower portion of the
humeral shaft to ulnar tuberosity
and coronoid process
BICEPS BRACHII –
Short head arises from coracoid
process of scapula.
Long head from supraglenoid
tubercle of scapula.
They both attaches as a common
tendon to radial tuberosity.
BRACHIORADIALIS-
It arises from lateral supracondyle of
humerus and inserts to distal end of
radius.
25. ELBOW FLEXORS
• The brachialis muscle works in flexion of the elbow in all
positions of the forearm , with or without resistance.
• The biceps brachii is active during unresisted elbow flexion with
forearm supinated and when the forearm is midway between
supination and pronation but it tends to be more active when forearm
is pronated.
26. • Brachioradialis is more active in mid prone and full pronated elbow
flexion and when the speed of motion is increased or load is applied.
27. ELBOW
EXTENSORS
TRICEPS –
Three heads of origin-
long head-from the infraglenoid
tubercle of scapula
medial head and lateral head –
originate from either side of radial
groove on posterior part of shaft of
humerus.
the three heads insert via a
common tendon into the olecranon
process of ulna.
ANCONEUS –It arises from lateral
epicondyle of humerus and extends to
olecranon process of ulna.
28. EXTENSORS OF ELBOW
• TRICEPS is the powerful extensor of the elbow.
• Long head of Triceps depends on Shoulder Position.
• Medial head of Triceps is active in unresisted Elbow
extension.
• All three Heads of Triceps are active when heavy resistance is given to
Extension.
• Anconeus muscle provides stability posterolaterally to joint.
29. Joint play movements
IN FLEXION
• The Trochlear ridge of Ulna slides along the Trochlear groove until the
Coronoid process reaches the Coronoid fossa in Humeroulnar joint
• The radial head slides over capitulum and reaches Radial fossa in Full
Flexion.
31. • IN EXTENSION
• The OLECRANON PROCESS enter the olecranon fossa in
Humeroulnar Joint
• There is no contact between the articulating surfaces in Humeroradial
Joint.
32. SUPINATORS
AND
PRONATORS
Pronater Teres -
2 head of origin – humeral head and
ulnar head
the humeral head comes from common
tendon on medial epicondyle of humerus.
The smaller ulnar head arises from the
medial aspect of the coronoid process of
ulna.
Insert both at lateral side of radius.
Pronator quadratus- arises from ulna
and cross the interroseous membrane
anteriorly to insert on radius.
Supinators-arises from lateral
epicondyle of humerus , the muscle
crosses interroseous membrane to insert
into radius just medial and inferior to
bicipital tuberosity.
33.
34. PRONATORS AND SUPINATORS
• PRONATOR TERES----- helps in Pronation,it acts in
all position of Elbow, helps in Stabilization of
Superio Radio Ulnar Joint. Active during rapid
and resisted Pronation.
• PRONATOR QUADRATUS---- helps in Pronation in all
position of Elbow.
• SUPINATOR---------helps in Supination in all
position of Elbow
35. Continued’
• In Elbow extended position Pronation is limited
due to passive tension in Biceps Brachi.
• Supination is limited due to passive tension in
Interosseous Membrane.
38. CLINICAL SIGNIFICANCE
NURSEMAID’S ELBOW or PULLED ELBOW
• In small children the radial head is not fully developed ,lifting small child
up in to by one hand may cause the RADIAL HEAD to slip out of
Annular Ligament.
CUBITAL TUNNEL SYNDROME
• Repetitive forceful contractions of Flexor carpi
Ulnaris may compress Ulnar Nerve as it passess
through the cubital tunnel between Medial
Epicondyle of Humerus and Olecranon process of
Ulna.
41. CONTINUED’
TENNISELBOWor LATERAL EPICONDYLITIS:
• Inflammation at origin of Extensors of Wrist at Lateral Epicondyle.
• It is caused due to repeated forceful contraction of Wrist Extensors.
• Extensor carpi radialis brevis is affected
GOLFER’S ELBOWor MEDIAL EPICONDYLITIS:
• Inflammation at origin of Flexors of Wrist at Medial Epicondyle.
• Repetitive contractions of Pronator Teres,Flexor Carpi Ulnaris .