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Knee Joint

Study Q's for Knee Joint 5a

QuestionAnswer
What attaches to the intercondylar eminence? ACL, LCL, ANT/POST Horns of Medial and Lateral Menisci
List Structures on the anterior aspect of the Knee Joint Capsule 5 structures. What is the most unique aspect of this joint capsule relative to its fibrous portion?
Name the contributions of the Medial and Lateral Patellar Retinaculum Medial: Inferior fibers of VMO Lateral:IT Band (80%) VL (20%). Note that both retinaculums also attach to proximal aspect of patellar tendon.
List Structures on the Medial and Lateral aspect of Joint Capsule. Why is the MCL more prone to injury? Medial: MCL Lateral: LCL, IT band. MCL blends directly with jt. capsule for a firm attachment. LCL is separated by small blood vessels and loose CT.
Name the 2 ligaments in the posterior aspect of the joint capsule? (specialized thickenings) Oblique Popliteal Ligament, Arcuate Ligament
ID regions where fibrous and synovial layers of the joint capsule contact, and where they are separated Med/Let: Together Ant/Post: Separated. Synovial portion
Where does the anterior and posterior synovium attach when it diverges from fibrous portion of joint capsule? Ant=Edge of articular surface of patella, and lines deep surface of quad tendon, both patellar retinacula, and patellar ligament Post=follows deep edges of articular surfaces anteriorly.
Which structures in the knee joint are described as “extrasynovial BUT intracapsular” What procedure would you perform to test if they are injured? Cruciates and Menisci: not bathed in synovial fluid but w/in joint capsule. Injury and tears mean blood in jt. capsule, detected by drawing fluid out w/a needle
Where is the articularis genu muscle located and what is its function? Area of suprapatellar bursa. Extends from distal anterior femur to post. aspect synovial membrane. Fxns to elevate membrane during knee extension, thus keeping it getting caught between bones.
Name the false and true bursas? What makes them “true” and what makes them “false”? False bursa communicate with the joint space. True do not. 2 FALSE: Suprapatellar and Deep Infrapatellar. 4 TRUE: Prepatellar, Superficial Infrapatellar, Gastrocnemius, Pes Anserine
Which two bursa can be found in the subcutaneous? Prepatellar Bursa (Housmaid’s) and Superficial Infrapatellar Bursa (Clergyman’s)
Attachments and course of ACL and PCL Both found in intertrochanteric region. AMPL, PLAM
What is isometry? Which ligamentous structures exhibit isometry? Exhibiting tension throughout ROM. ACL, PCL, MCL
When performing “subtle effusion detection”, where does fluid get pushed to? Suprapatellar bursa causing budge around sup. aspect of patella and quad tendon.
Pt. w/marked effusion would hold in knee in what position?why? 15-20 degrees of flexion to create the greatest volume of jt. space. Position is held to inflict least amount of pressure on joint capsule.
What occupies the groove between the femoral condylar on the posterior aspect of the patella?Significance patellar ridge. 1. Contributes to stability of PF joint. 2. Separates medila and lateral patellar articular surfaces=>Facets
What innervates the joint capsule in the knee? Significance branches of Saphenous, Obturator, Common Peroneal, and Tibial Nerves. Note for referred pain from knee to hip joint.
Name the attachments of the menisci to the tibial plateu Intercondylar region: Horns Periphery: Coronary Ligaments (deep portions of fibrous jt. capsule)
Created by: Phillypino
 

 



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