Arthrex DEX IOT Exam Questions and Answers
Question 1: What is the primary purpose of a suture anchor in orthopedic surgery?
A. To fixate bone fractures
B. To reattach soft tissue to bone
C. To replace joint surfaces
D. To measure joint laxity
CORRECT ANSWER: B. To reattach soft tissue to bone
Rationale: Suture anchors are designed to secure sutures into bone, allowing soft tissue (like
tendons or ligaments) to be reattached to the bone surface.
Question 2: Which sterilization method is commonly used for heat-sensitive orthopedic
instruments?
A. Steam autoclave
B. Ethylene oxide gas
C. Dry heat
D. Boiling water
CORRECT ANSWER: B. Ethylene oxide gas
Rationale: Ethylene oxide (EtO) is used for items that cannot withstand the high heat and
moisture of steam autoclaving.
Question 3: During arthroscopy, what fluid is typically used for joint distension?
A. Saline or Lactated Ringer's
B. Sterile water
C. Blood
D. Alcohol
CORRECT ANSWER: A. Saline or Lactated Ringer's
Rationale: Isotonic solutions like saline are used to distend the joint and provide visualization
without causing tissue damage.
Question 4: What is the function of a trocar in arthroscopic procedures?
A. To cut bone
B. To penetrate the joint capsule for portal creation
,C. To suture tissue
D. To measure temperature
CORRECT ANSWER: B. To penetrate the joint capsule for portal creation
Rationale: A trocar is a sharp instrument used to pierce the joint capsule safely to establish an
arthroscopic portal.
Question 5: Which knot is commonly used in arthroscopic surgery for securing sutures?
A. Square knot
B. Duncan loop
C. Bowline
D. Overhand knot
CORRECT ANSWER: B. Duncan loop
Rationale: The Duncan loop (or similar sliding knots) is designed to be tied extracorporeally and
pushed down arthroscopically.
Question 6: What is the primary risk of excessive pump pressure during arthroscopy?
A. Fluid extravasation
B. Joint infection
C. Instrument breakage
D. Vision loss
CORRECT ANSWER: A. Fluid extravasation
Rationale: High pressure can force fluid into surrounding soft tissues, causing swelling and
potential compartment syndrome.
Question 7: Which component connects the camera to the light source in an arthroscopy
tower?
A. Shaver handpiece
B. Video cable
C. Light cable
D. Pump tubing
CORRECT ANSWER: C. Light cable
Rationale: The fiber optic light cable transmits illumination from the light source to the
arthroscope.
Question 8: What is the purpose of a meniscal repair device?
, A. To remove the meniscus
B. To stabilize meniscal tears
C. To replace the meniscus
D. To clean the joint
CORRECT ANSWER: B. To stabilize meniscal tears
Rationale: Repair devices deliver implants or sutures to hold torn meniscal tissue together for
healing.
Question 9: Which safety feature prevents electrical burns during electrosurgery?
A. Grounding pad
B. Light source
C. Camera head
D. Pump controller
CORRECT ANSWER: A. Grounding pad
Rationale: The return electrode (grounding pad) completes the circuit and disperses energy to
prevent burns at the contact site.
Question 10: What is the standard viewing angle for a general diagnostic arthroscope?
A. 0 degrees
B. 30 degrees
C. 90 degrees
D. 180 degrees
CORRECT ANSWER: B. 30 degrees
Rationale: A 30-degree scope allows visualization of structures off the central axis by rotating
the scope.
Question 11: Which instrument is used to remove soft tissue debris during arthroscopy?
A. Motorized shaver
B. Bone saw
C. Drill
D. Hammer
CORRECT ANSWER: A. Motorized shaver
Rationale: The shaver uses a rotating blade to debride soft tissue and cartilage debris.
Question 12: What is the primary material of biocomposite suture anchors?
Question 1: What is the primary purpose of a suture anchor in orthopedic surgery?
A. To fixate bone fractures
B. To reattach soft tissue to bone
C. To replace joint surfaces
D. To measure joint laxity
CORRECT ANSWER: B. To reattach soft tissue to bone
Rationale: Suture anchors are designed to secure sutures into bone, allowing soft tissue (like
tendons or ligaments) to be reattached to the bone surface.
Question 2: Which sterilization method is commonly used for heat-sensitive orthopedic
instruments?
A. Steam autoclave
B. Ethylene oxide gas
C. Dry heat
D. Boiling water
CORRECT ANSWER: B. Ethylene oxide gas
Rationale: Ethylene oxide (EtO) is used for items that cannot withstand the high heat and
moisture of steam autoclaving.
Question 3: During arthroscopy, what fluid is typically used for joint distension?
A. Saline or Lactated Ringer's
B. Sterile water
C. Blood
D. Alcohol
CORRECT ANSWER: A. Saline or Lactated Ringer's
Rationale: Isotonic solutions like saline are used to distend the joint and provide visualization
without causing tissue damage.
Question 4: What is the function of a trocar in arthroscopic procedures?
A. To cut bone
B. To penetrate the joint capsule for portal creation
,C. To suture tissue
D. To measure temperature
CORRECT ANSWER: B. To penetrate the joint capsule for portal creation
Rationale: A trocar is a sharp instrument used to pierce the joint capsule safely to establish an
arthroscopic portal.
Question 5: Which knot is commonly used in arthroscopic surgery for securing sutures?
A. Square knot
B. Duncan loop
C. Bowline
D. Overhand knot
CORRECT ANSWER: B. Duncan loop
Rationale: The Duncan loop (or similar sliding knots) is designed to be tied extracorporeally and
pushed down arthroscopically.
Question 6: What is the primary risk of excessive pump pressure during arthroscopy?
A. Fluid extravasation
B. Joint infection
C. Instrument breakage
D. Vision loss
CORRECT ANSWER: A. Fluid extravasation
Rationale: High pressure can force fluid into surrounding soft tissues, causing swelling and
potential compartment syndrome.
Question 7: Which component connects the camera to the light source in an arthroscopy
tower?
A. Shaver handpiece
B. Video cable
C. Light cable
D. Pump tubing
CORRECT ANSWER: C. Light cable
Rationale: The fiber optic light cable transmits illumination from the light source to the
arthroscope.
Question 8: What is the purpose of a meniscal repair device?
, A. To remove the meniscus
B. To stabilize meniscal tears
C. To replace the meniscus
D. To clean the joint
CORRECT ANSWER: B. To stabilize meniscal tears
Rationale: Repair devices deliver implants or sutures to hold torn meniscal tissue together for
healing.
Question 9: Which safety feature prevents electrical burns during electrosurgery?
A. Grounding pad
B. Light source
C. Camera head
D. Pump controller
CORRECT ANSWER: A. Grounding pad
Rationale: The return electrode (grounding pad) completes the circuit and disperses energy to
prevent burns at the contact site.
Question 10: What is the standard viewing angle for a general diagnostic arthroscope?
A. 0 degrees
B. 30 degrees
C. 90 degrees
D. 180 degrees
CORRECT ANSWER: B. 30 degrees
Rationale: A 30-degree scope allows visualization of structures off the central axis by rotating
the scope.
Question 11: Which instrument is used to remove soft tissue debris during arthroscopy?
A. Motorized shaver
B. Bone saw
C. Drill
D. Hammer
CORRECT ANSWER: A. Motorized shaver
Rationale: The shaver uses a rotating blade to debride soft tissue and cartilage debris.
Question 12: What is the primary material of biocomposite suture anchors?
