Flashcards in Musculoskeletal Deck (36):
Attachments that are cord-like or flat sheets
4 types of feather-like muscle patterns that run oblique to the long axis of the muscle
A deltoid muscle is an example of a _______ muscle
The gastrocnemius muscle in the calf is a ______ muscle in which the fibers have a central origin
The large, flat muscles of the external oblique or the trapezius attach with a large flat ______
A collection of tough collagenous fibers that attach the muscle at the proximal and distal portions is a ______
Aponeurosis attachments occur in what muscles?
flat muscles, such as rectus abdominis
Why do tendons heal slowly?
lack of vascularity
What is a synovial sheath?
tubular sac surrounding a tendon
Tendons occur with or without a _______
Synovial sheaths are found in what 4 areas of the body?
Short bands of tough fibers that connect bones to other bones
Ligaments are especially important in what 3 areas of the body?
What is the sac-like structure surrounding joints and tendons that contains synovial fluid?
What is the purpose of synovial fluid?
decrease friction between tendon and bone or bone and ligament
The knee joint has ____ number of bursa
What is the modality of choice when imaging MS problems?
The biceps tendon is a sheath covered tendon that appears sonographically as
hypoechoic halo surrounding the tendon that measures a couple millimeters
Acute disease may reveal a sheath that is ______
thicker than the tendon
Areas of __________ in the hand, wrist and ankle contain tendons with sheaths
What fills the fascial compartment of a tendon lacking a synovial sheath?
paratenon, a loose areolar connective tissue
The joining of the tendon to the bone is _____
The enthesis is approximately ____ long and images longitudinally as a ______, _______ area in the distal tendon
Ligaments require a transducer of ____MHz or higher
Ligaments are only imaged in the ______ view
Many ligaments in the large joints image hyperechoic except for the ______ ligament which appears hypoechoic
Usually the ligament measures __ to __ mm thick and is _____ in echogenicity
What is anisotropy?
occurs when sound beam misses transducer on return because of the curve of the structure
What has the most pronounced anisotropy?
What maneuver should be performed to correct anisotropy?
heel-toe rocking to create the optimal 90 degree angle
The bending of transmitted sound to an oblique path is ______
edge artifact or refractile shadowing
Refractile shadowing appears as a ______ band _____ to the structure
A cause of refractile shadowing is tissue impedance mismatch and is most often seen with
complete tendon tear
The time of flight artifact occurs most often when imaging _____ patients at the ______ interface
The time of flight artifact displaces the image in the _____ plane