RMSKS (Interventional Techniques) questions with
verified answers
20-gauge needles are typically recommended for which body parts and why?
Ans✔✔✔-3.5" inches long and used for shoulder and knee procedures because of
the depth needed for penetration
22-gauge needles are typically recommended for which body parts and why?
Ans✔✔✔-1.5"-3.5" inches long and used for more distal procedures as the
needle doesn't need to penetrate as far.
25-gauge needles are typically recommended for which body parts and why?
Ans✔✔✔-Most commonly for superficial procedures as this will only need to
reach the subcutaenous surface
A Baker's cyst is most common found between what 2 tendons? Ans✔✔✔-
Gastrocnemius & Semimembranosus
A needle with a trocar (or stylet) may improve what? Ans✔✔✔-Conspicuity at
ultrasound and will ensure that the needle easily passes through fascial planes
and does not get plugged with tissue as the needle is advanced.
A trocar (or stylet) is preferred when completing what procedure? Ans✔✔✔-
Aspiration, to simply the procedure and avoid any extra steps
After lavage/aspiration procedure with RTC calcific tendinosis, the needle is
withdrawn into the adjacent subacromial/subdeltoid bursa for corticosteroid and
anesthetic injection. Why is this crucial? Ans✔✔✔-If the corticosteroid and
anesthetic injection are not completed, the patient can develop a calcific bursitis
, after the procedure. This is why lavage and aspiration usually result in immediate
improvement of symptoms.
Approximately what percentage of Baker's cysts communicate to the knee joint in
patients older than 50 years old? Ans✔✔✔-50%
Common sites to perform tendon fenestration (tenotomy or dry needling)?
Ans✔✔✔-1) CET of the elbow
2) Gluteus Minimus/Medius tendons
3) Hamstring tendons
4) Patellar tendons
5) Achilles tendon
For aspiration or injection of the pubic symphysis, the transducer is placed in the
transverse plane, and the needle can enter (blank) to (blank) with an (blank)
approach. Ans✔✔✔-For aspiration or injection of the pubic symphysis, the
transducer is placed in the transverse plane, and the needle can enter lateral to
medial with an in-plane approach or an out-of-plane approach may be used.
It is recommended when adjusting the transducer to only move how far when
trying to get the needle in plane for the procedure? Ans✔✔✔-1 mm
Joint aspiration procedures should be completed with what type of needle?
Ans✔✔✔-At least 20 or 22-gauge needles, with 18-gauge considered if joint fluid
is heterogenous
Name the approaches that can be taken when completing a procedure within the
MTP and IP joints. Ans✔✔✔-1) Parasagittal in-plane
verified answers
20-gauge needles are typically recommended for which body parts and why?
Ans✔✔✔-3.5" inches long and used for shoulder and knee procedures because of
the depth needed for penetration
22-gauge needles are typically recommended for which body parts and why?
Ans✔✔✔-1.5"-3.5" inches long and used for more distal procedures as the
needle doesn't need to penetrate as far.
25-gauge needles are typically recommended for which body parts and why?
Ans✔✔✔-Most commonly for superficial procedures as this will only need to
reach the subcutaenous surface
A Baker's cyst is most common found between what 2 tendons? Ans✔✔✔-
Gastrocnemius & Semimembranosus
A needle with a trocar (or stylet) may improve what? Ans✔✔✔-Conspicuity at
ultrasound and will ensure that the needle easily passes through fascial planes
and does not get plugged with tissue as the needle is advanced.
A trocar (or stylet) is preferred when completing what procedure? Ans✔✔✔-
Aspiration, to simply the procedure and avoid any extra steps
After lavage/aspiration procedure with RTC calcific tendinosis, the needle is
withdrawn into the adjacent subacromial/subdeltoid bursa for corticosteroid and
anesthetic injection. Why is this crucial? Ans✔✔✔-If the corticosteroid and
anesthetic injection are not completed, the patient can develop a calcific bursitis
, after the procedure. This is why lavage and aspiration usually result in immediate
improvement of symptoms.
Approximately what percentage of Baker's cysts communicate to the knee joint in
patients older than 50 years old? Ans✔✔✔-50%
Common sites to perform tendon fenestration (tenotomy or dry needling)?
Ans✔✔✔-1) CET of the elbow
2) Gluteus Minimus/Medius tendons
3) Hamstring tendons
4) Patellar tendons
5) Achilles tendon
For aspiration or injection of the pubic symphysis, the transducer is placed in the
transverse plane, and the needle can enter (blank) to (blank) with an (blank)
approach. Ans✔✔✔-For aspiration or injection of the pubic symphysis, the
transducer is placed in the transverse plane, and the needle can enter lateral to
medial with an in-plane approach or an out-of-plane approach may be used.
It is recommended when adjusting the transducer to only move how far when
trying to get the needle in plane for the procedure? Ans✔✔✔-1 mm
Joint aspiration procedures should be completed with what type of needle?
Ans✔✔✔-At least 20 or 22-gauge needles, with 18-gauge considered if joint fluid
is heterogenous
Name the approaches that can be taken when completing a procedure within the
MTP and IP joints. Ans✔✔✔-1) Parasagittal in-plane
