Knee Joint Anatomy & Common Injuries (Ligaments, Menisci & Movements) скачать в хорошем качестве

Knee Joint Anatomy & Common Injuries (Ligaments, Menisci & Movements)

Content: 00:00 Introduction & Overview 00:56 Articulating Surfaces of the Knee 02:24 Menisci 03:02 Intracapsular Ligaments 04:54 Joint Capsule 05:21 Extracapsular Ligaments 06:43 Bursae Around the Knee 07:22 Knee Movements 07:42 Common Knee Conditions 07:59 Osteoarthritis 09:47 Meniscus Tear 10:46 ACL Tear 11:51 Prepatellar Bursitis 12:44 Summary & Next Topic 🫀Help me make more free educational content:    / @taimtalksmed   📲Other Links: Website: https://taimtalksmed.com/ Instagram:   / taimtalksmed   Discord:   / discord   This video covers the full anatomy of the knee joint, followed by a breakdown of common injuries like ACL tear, meniscus tear, osteoarthritis, and bursitis. Bones of the Knee Joint Femur (femur): Forms the upper part of the knee joint. Tibia (tibia): Bears weight and forms the lower part of the joint. Patella (patella): Protects the anterior surface and improves leverage of the quadriceps. Articulations Femorotibial joint: Between femoral condyles and tibial plateau. Femoropatellar joint: Between femur and posterior patella. Menisci of the Knee Medial meniscus (meniscus medialis): C-shaped; less mobile; firmly attached to tibia. Lateral meniscus (meniscus lateralis): Nearly circular; more mobile. Intra-articular Ligaments Meniscotibial ligaments (ligg. meniscotibialia) Transverse ligament of the knee (ligamentum transversum genus) Anterior meniscofemoral ligament (Humphrey) (ligamentum meniscofemorale anterius) Posterior meniscofemoral ligament (Wrisberg) (ligamentum meniscofemorale posterius) Anterior cruciate ligament (ACL) (ligamentum cruciatum anterius): Prevents anterior tibial displacement. Posterior cruciate ligament (PCL) (ligamentum cruciatum posterius): Prevents posterior tibial displacement. Joint Capsule Synovial membrane (membrana synovialis): Produces synovial fluid for lubrication. Fibrous membrane (membrana fibrosa): Outer supportive layer. Extracapsular Ligaments & Retinacula Medial patellar retinaculum: Fibrous expansion supporting the patella. Lateral patellar retinaculum: Stabilizes the patella laterally. Medial patellofemoral ligament: Anchors patella to medial femur. Lateral patellofemoral ligament: Anchors patella to lateral femur. Patellar ligament (ligamentum patellae): Connects patella to tibial tuberosity. Oblique popliteal ligament (ligamentum popliteum obliquum): Reinforces posterior capsule. Arcuate popliteal ligament (ligamentum popliteum arcuatum): Posterolateral reinforcement. Tibial collateral ligament (ligamentum collaterale tibiale): Resists valgus stress. Fibular collateral ligament (ligamentum collaterale fibulare): Resists varus stress. Anterolateral ligament Fat Pads: Infrapatellar fat pad (corpus adiposum infrapatellare): Cushions anterior joint space. Bursae Around the Knee Subcutaneous prepatellar bursa (bursa prepatellaris subcutanea): Over patella; prone to swelling. Subcutaneous infrapatellar bursa (bursa infrapatellaris subcutanea Deep infrapatellar bursa (bursa infrapatellaris profunda) Suprapatellar bursa (bursa suprapatellaris) Anserine bursa (bursa anserina) Subtendinous bursa of gastrocnemius (bursa subtendinea m. gastrocnemii) Semimembranosus bursa (bursa m. semimembranosi) Movements of the Knee Flexion (flexio): Bending the knee backward. Extension (extensio): Straightening the leg forward. Internal rotation (rotatio interna) External rotation (rotatio externa) Common Knee Joint Conditions Osteoarthritis Progressive degeneration of articular cartilage leading to joint space narrowing and osteophyte formation. Common in older adults, especially women, and those with obesity or previous injuries. Symptoms: joint pain, morning stiffness under 30 mins, crepitus, swelling, reduced range of motion. Meniscus Tear Common in athletes, often due to twisting injuries with a fixed foot. Peripheral tears (in outer vascular zone) may heal conservatively. Symptoms: localized joint pain, delayed swelling, stiffness, difficulty squatting. ACL Tear Often occurs with pivoting, sudden stops, or awkward landings. Common in female athletes. Symptoms: audible pop, rapid swelling, instability, limited motion. Prepatellar Bursitis Inflammation of the bursa in front of the patella. Caused by repeated kneeling, direct trauma, or infection. Symptoms: anterior swelling, pain with pressure or movement, redness, possible fever. Sources Kozlowski, T. (2017). Memorix Anatomy, 2nd ed. Standring, S. (2020). Gray’s Anatomy, 42nd edition White TD, Folkens PA. (2005). The Human Bone Manual Tubbs RS, Shoja MM, Loukas M. (2016). Bergman’s Encyclopedia of Human Anatomic Variation Moore, K.L., Dalley, A.F., Agur, A.M.R. Clinically Oriented Anatomy Kenhub.com Tools Used: Complete Anatomy (3D4Medical), PowerPoint, Canva, Camtasia