Meniscal tears are common injuries to the knee joint. The menisci act as shock absorbers and stabilizers within the knee. They are prone to tears from rotational forces on the knee. Common types of tears include longitudinal and bucket handle tears. Patients experience pain, swelling, locking, and mechanical symptoms. Exams involve joint line tenderness and specialized tests. MRI is very accurate for diagnosis. Treatment options include conservative management for small peripheral tears or surgery like partial meniscectomy, repair, or total removal depending on the size and location of the tear. Surgical options aim to preserve as much meniscal tissue as possible to prevent future cartilage degeneration.
Knee injuries for MBBS (undergraduate students). This presentation deals with injuries to the bones and ligaments around the knee as well as gives a brief overview on the dislocations of the knee and patella.
muscle pedicle grafting for delayed presentation of intra cpasular fracture neck of Femur.. a study of 65 cases in Osmania Medical College, Hyderabad, Telengana.
Knee injuries for MBBS (undergraduate students). This presentation deals with injuries to the bones and ligaments around the knee as well as gives a brief overview on the dislocations of the knee and patella.
muscle pedicle grafting for delayed presentation of intra cpasular fracture neck of Femur.. a study of 65 cases in Osmania Medical College, Hyderabad, Telengana.
Discoid meniscus is a congenital abnormality of the lateral compartment of the knee and not only a big meniscus
The leading cause of non traumatic snapping and extension deficit in children and adolescents
Clinical examination is more sensitive and specific for diagnosis
MRI is a good tool for diagnosis
Meniscal preserving surgeries are recommended to avoid degenerative arthritis
Long-term follow-up studies are needed to determine the effects of meniscal Saucerization and repair on the risk of OA.
Basics of patellofemoral instability for postgraduates. Gives brief introduction about patellofemoral joint anatomy, causes, examintaion and treatment for patellofemoral instability
Meniscal injuries and physiotherapy managementSyed Adil
meniscal tear
Anatomy
Types of meniscal tear
Etiology
Clinical features including (special tests)
Differential diagnosis
Management for partial meniscal tear and full meniscal tear, meniscectomy
Recent advance
for meniscal tears
Discoid meniscus is a congenital abnormality of the lateral compartment of the knee and not only a big meniscus
The leading cause of non traumatic snapping and extension deficit in children and adolescents
Clinical examination is more sensitive and specific for diagnosis
MRI is a good tool for diagnosis
Meniscal preserving surgeries are recommended to avoid degenerative arthritis
Long-term follow-up studies are needed to determine the effects of meniscal Saucerization and repair on the risk of OA.
Basics of patellofemoral instability for postgraduates. Gives brief introduction about patellofemoral joint anatomy, causes, examintaion and treatment for patellofemoral instability
Meniscal injuries and physiotherapy managementSyed Adil
meniscal tear
Anatomy
Types of meniscal tear
Etiology
Clinical features including (special tests)
Differential diagnosis
Management for partial meniscal tear and full meniscal tear, meniscectomy
Recent advance
for meniscal tears
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
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Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
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June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Model Attribute Check Company Auto PropertyCeline George
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2. Anatomy and Functions of Meniscus
• Meniscal function is essential to the normal functioning of the
knee joint.
• Menisci act as a joint filler and shock absorber compensating
for the gross incongruity between the femoral and tibial
articulating surfaces.
• Menisci prevent capsular and synovial impingement during
flexion extension movements.
• Important rotatory stabilizers.
• Essential for a smooth transition from a pure hinge to a gliding
or rotatory motion as the knee moves from flexion to
extension.
3. • Peripheral edges of the menisci are convex, fixed and
attached to the inner surface of the knee joint capsule except
where the popliteus is interposed laterally.
Perpheral edges are also attached loosely to the borders of the
tibial plateau by coronary ligaments.
Inner edges are concave, thin and unattached.
Inferior surface of the menisci are flat and superior surface is
concave.
4.
5.
6. • Medial Meniscus :
• C shaped
• Larger in radius than lateral meniscus
• Posterior horn wider than anterior horn
• Anterior horn attached to the tibia anterior to the intercondylar
eminence and to the ACL.
• Posterior horn anchored immediately in front of the attachments of
PCL posterior to the intercondylar eminence.
• Lateral Meniscus:
• More circular in form compared to medial meniscus.
• Anterior horn attached to the tibia medially in front of the
intercondylar eminence
• Posterior horn attached to the posterior aspect of the intercondylar
eminence.
• Wider body, smaller diameter, more mobile
7.
8. • Menisci are crescents, roughly triangular in cross sections
• Cover one half of the articular surface of the corresponding
tibial plateau.
• Composed of dense tightly woven collagen fibres – majority
being type 1 collagen and a small amount of type 2 collagen.
• Orientation of collagen fibres :
• Mostly circumferential
• Radial
• Perforating
9.
10. Vascularity
• The menisci are largely avascular except for the peripheral
portion.
• Divided in 3 zones from periphery to centre.
• RED-RED zone
• RED-WHITE zone
• WHITE-WHITE zone.
• Bloody supply is mainly by the lateral and medial geniculate
vessels.
• Branches from these vessels give rise to perimeniscal capillary
plexus.
11.
12. • Biomechanical study reveals that upto 150kgs of weight , the
lateral meniscus appears to carry 70% of the load on that side
of the joint.
• Medial meniscus shares the load approximately equally with
the exposed articular cartilage.
• Medial menisectomy decreases contact area by 50%-70% and
increases contact stress by 100%
• Lateral menisectomy decreases contact area by 40% but
increases contact stress by 200% because of the relative
convex surface of the lateral tibial plateau.
13. Meniscal healing
• After injury, within the peripheral vascular zone, a fibrin clott
rich in inflammatory cells is formed.
• Vessels from the peripheral perimeniscal plexus capillary
plexus proliferate throughout this fibrin scaffold.
• Accompanied by proliferations of differentiated mesenchymal
cells.
• Lesion is eventually filled with cellular fibrovascular scar tissue
that glues the wound edges together.
14. Tears of Menisci
• Traumatic lesions of the menisci are produced more
commonly by rotation as the flexed knee moves towards an
extended position.
• The most common location for injury is the posterior horn of
the menisci and the longitudinal tears are the most common
type of injury.
• Those with inadequate musculature, especially the
quadriceps , probably are at significantly greater risk of
meniscal injury
15. Mechanism of tear.
• Meniscus is usually torn by the rotational forces when the joint
moves from flexion towards extension.
• During vigorous internal rotation of the femur on the tibia, with the
knee in flexion, the femur tends to force the medial meniscus
posteriorly and towards the centre of the joint.
• A strong peripheral attachment posteriorly may prevent the
meniscus from being injured.
• If this attachment stretches, then the meniscus is forced towards
the centre of the joint.
• Meniscus is caught between the tibia and the femur and is torn
longitudinally when the joint is suddenly extended.
16. Contd.
• If this longitudinal tear extends anteriorly beyond the medial
collateral ligament, the inner segment of the meniscus is caught in
the intercondylar notch and cannot return to its former position –
thus a BUCKET-HANDLE tear with locking of the joint is produced.
• The same mechanism can produce a posterior peripheral or a
longitudinal tear of the lateral meniscus.
• The lateral femoral condyle, forces the anterior half of the mensicus
anteriorly and towards the centre of the joint.
• This strain in turn may tear the posterior half of the meniscus from
its peripheral attachment.
• When the joint is extended, a longitudinal tear occurs.
17. Types of meniscal tears.
• Longitudinal tears
• Transverse and oblique tears
• Combination of longitudinal and transverse
tears.
• Bucket handle tears.
• Tears associated with cystic meniscus.
18.
19. Symptoms
• Pain localising to medial or lateral joint line
• Intermittent or delayed swelling.
• Pain during weight bearing
• Mechanical symptoms like locking or clicking
• Pain during squatting
• Giving way of the knee.
• Locking is more common with logitudinal tears especially
bucket handle tear.
• Locking is not a pathognomonic of bucket handle tear.
• Intra-articular osteocartilagenous lose body may cause locking as
well.
20. • FALSE LOCKING
• Occurs soon after an injury in which haemorrhage around the
posterior aspect of the capsule or a collateral ligament with
associated hamstring spasm prevents complete extension of
the knee joint.
• If the patient doesnot have locking, then the diagnosis of a
torn meniscus is very difficult.
• The patient at times gives a history of several episodes of
trouble referable to the knee , often resulting in effusion and
distability but no locking.
21. Clinical Examination.
• Medial / Lateral joint line tenderness.
• Effusion
• Muscle atrophy around the knee – especially vastus
medialis
• Special tests:
• McMurray test
• Apley’s grinding test
• Thessaly test (diagnostic accuracy of 94% for medial
meniscus tear and 96% for lateral meniscus tear)
• Squat test
22. Radiology
• X-Rays :
• Anteroposterior and lateral views.
Rule out osteochondral lose body.
Osteochondritis dissecans (mimics meniscal tear)
MRI:
Diagnostic accuracy of 98% for medial meniscus and
90% for lateral meniscus.
23.
24. Treatment options
• Non – operative :
• Incomplete meniscal tear or a small (<5mm)
stable peripheral tear with no other ligamentous
injury can be managed conservstively.
• Stable longitudinal tears occuring at peripheral
vascular zone have been reported to heal without
surgical management.
• 6 weeks of knee protection in the form of long
knee brace or long leg cast.
• Crutch walking with touch down weight bearing
25. Physiotherapy
• Progressive isometric exercise programme
• Quadriceps, hamstring, gastrocnemius and soleus
strengthening
• Hip abductors, adductors, flexors and extensor
strengthening.
• Post physiotherapy gradual weight bearing.
• If symptoms donot subside or recurr after
conservative management then surgical options
of reapir or removal needs to be considered.
26. Operative management
• Partial meisectomy
• Total menisectomy
• Meniscus repair.
• Most of the degenerative changes in the knee joint occurs after
total rather than partial menisectomy.
• After partial menisectomy, there is less articular cartilage
degeneration.
• Amount of degeneration is directly proportional to the amount of
meniscus removed.
• If the torn meniscus produces almost daily symptoms, frequent
locking, chronic effusions, then the pathologic portion of the
meniscus should be removed.
• If a significant amount of the peripheral rim of meniscus can be
preserved then the long term outcome is improved.
27. • Complete removal of the meniscus is justified only if the torn
meniscus is irrepairable.
• Total menisectomy is no longer the treatment of choice in young
athletes or other people whose daily activity requires rigorous use
of the knee.
• Partial medial menisectomy generally are favourable with 88% to
95% of the patients reporting a good to excellent results.
• Ideal indication for meniscal repair:
• Acute 1-2 cm longitudinal peripheral tear(red-red or red-white
zone) in a young individual.
• Studies have shown that clinical outcomes were slightly better
when plate rich plasma was used in open repairs of horizontal tear
extending into avascular zone.