Knee Disorders

Question 1

Osgood-Schlatter Diseasea.k.a.Osteochondritis of Tibial Tubercle

Answer 1

Partial disruption at the patellar ligament - tuberosity attachment creating localized inflammatory changes1.) Males more than females2.) Ages 10-153.) Pain, swelling, and tenderness over tibial tubercle4.) Pain on ascending or descending stairs5.) History of single violent injury or repetitive flexion-extension movement

Question 2

Prepatellar Bursitisa.k.a.Housemaid’s Knee

Answer 2

A fluid swelling occurs subcutaneously over the lower half of the patella and the upper half of the patellar ligament, which is the distribution of the prepatellar bursa. The cause is any occupation that causes chronic trauma to the tissue overlying the patella, such as excessive kneeling or leaning forward

Question 3

Infrapatellar Bursitisa.k.a.Clergyman’s Knee

Answer 3

A swelling occurs on both sides of the patellar ligament near the tibial tuberosity. The cause is repeated trauma to the region of the tibial tuberosity, including a variety of occupations such as roofers, painters and floor layers

Question 4

Menisci

Answer 4

1.) The medial meniscus forms a wider curve (C curve) than the lateral meniscus, which is rounder and shaped like an O2.) The outer margins of the menisci are thicker than the inner margins and taper toward the center3.) The menisci are firmly attached at their ends to the intercondylar area of the tibia4.) The capsular fibers which attach the menisci and to the tibial condyles are called the medial and lateral coronary ligaments5.) The middle genicular branch of the popliteal artery sends branches around the periphery of the meniscus under the capsule. Small tortuous nonanastomotic vessels enter the outer fibrous zone of the meniscus6.) The inner third of the meniscus is cartilagenous and avascular7.) The medial meniscus is attached to the medial collateral ligament8.) The lateral meniscus is smaller and more freely moveable then the medial meniscus9.) The lateral meniscus is attached to the popliteus muscle10.) The medial meniscus is 20 times more commonly injured than the lateral meniscus

Question 5

Morrant Baker Cyst

Answer 5

Escaped synovial fluid in an enclosed membrane sac which is protruding through the joint capsule of the knee1.) Location at midline of popliteal fossa2.) Protrudes when knee is extended and is not visible when knee is flexed3.) Sometimes dull pain on walking is produced4.) May compress popliteal vessels 5.) Often associated with rheumatoid arthritis6.) Femorotibial joint disorder