joint line Flashcards
Identify the joint line of the hip, explaining the shape of it and how you locate it in relation to its articular surfaces
the joint centre lies in a horizontal plane passing through the top of the greater trochanter. The joint centre lies 1 cm below the middle third of the inguinal ligament (this goes from the ASIS to the pubic tubercle)
Identify the joint line of the knee, explaining the shape of it and how you locate it in relation to its articular surfaces
this can be felt below the anterior margins of each femoral condyle and above the anterior margins of each tibial condyle. The joint line can be felt anteriorly, medially and laterally, but gastrocnemius prevents it being felt posteriorly
Identify the joint line of the ankle, explaining the shape of it and how you locate it in relation to its articular surfaces
lies in a horizontal line 1 cm above the tip of the medial malleolus and 2 cm above the tip of the lateral malleolus – and palpated on the dorsal surface. One can palpate the inner border of the medial malleolus, lower end of tibia and medial edge of lateral malleolus.
Identify the joint line of the glenohumeral, explaining the shape of it and how you locate it in relation to its articular surfaces
the midpoint of the joint is approximately 1 cm lateral to the coracoid process. A vertical line, slightly concave laterally, through this point identifies the joint line.
Identify the joint line of the elbow, explaining the shape of it and how you locate it in relation to its articular surfaces
can be identified by drawing a line 1 cm below the lateral epicondyle and 2 cm below the medial epicondyle. It can also be felt posteriorly between the head of the radius and the capitulum.
Identify the joint line of the wrist, explaining the shape of it and how you locate it in relation to its articular surfaces
is a line drawn between the 2 styloid processes (radial and ulnar) – slightly concave.
