Knee Injuries. 1  Patellofemoral Syndrome. Also called Runner's Knee, problems associated with the patella, or kneecap, are common in runners. 2  Kneecap Subluxation. Many kneecap issues are related to the position of the kneecap within the groove on the end of the thigh bone.
A movement toward the midline is called adduction. Adduct means to bring towards the center. The opposite, abduction is moving away from midline. A movement toward the midline is called adduction. Adduct means to bring towards the center. The opposite, abduction is moving away from midline.
A syncline is the opposite of an anticline. It is a downward fold or dip in underground strata. The anticline is the upward fold in a layer of strata. If you can picture a layer of subterranean strata that goes across in a straight or flat line, then comes to a plunging U-shaped dip, then you've got the syncline pictured. The opposite for the anticline. Sometimes we see the two together, as in side by side.