A patient presents with limited mobility in the knee joint post-injury. Which structure is most likely compromised?
Bursa
Tendons
Meniscus
Ligaments
The Correct Answer is C
A. Bursa: Bursae are fluid-filled sacs that reduce friction between tissues and when inflamed (bursitis) cause pain and localized swelling but usually do not produce major mechanical limitation of knee motion.
B. Tendons: Tendons connect muscle to bone and injury can limit movement by impairing muscle action, but isolated tendon injury typically affects specific movements rather than general joint mobility.
C. Meniscus: The menisci are fibrocartilaginous pads that cushion and stabilize the knee; tears frequently cause joint locking, catching, pain, and significant limitation of knee mobility.
D. Ligaments: Ligaments stabilize the joint and when torn can produce instability and pain that limit function, though mechanical locking and restricted range are more characteristically produced by meniscal damage.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Palatine bone:The palatine bones form the posterior part of the hard palate and contribute to the floor of the nasal cavity.
B. Vomer:The vomer forms part of the nasal septum, not the hard palate.
C. Mandible:The mandible is the lower jaw and does not form any part of the hard palate.
D. Sphenoid:The sphenoid bone contributes to the skull base but is not the primary bone forming the posterior hard palate.
Correct Answer is D
Explanation
A. Saddle:Saddle joints allow biaxial movement (for example the thumb carpometacarpal joint) but do not provide the greatest overall range of motion.
B. Hinge:Hinge joints permit movement primarily in one plane (flexion and extension), limiting their range compared with multiaxial joints.
C. Pivot:Pivot joints allow rotation around a single axis (for example the atlantoaxial joint) and therefore have a restricted range of motion.
D. Ball-and-socket:Ball-and-socket joints permit multiaxial movement including flexion/extension, abduction/adduction, and rotation, offering the greatest range of motion.
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