OMSITE 2006 Exam Questions With
100% Verified Answers
1. Alignment of which of the following is the most reliable for
proper reduction of the zygomaticomaxillary complex fracture?
A. Frontozygomatic suture
B. Sphenozygomatic suture
C. Infraorbital rim
D. Medial orbital rim -
correct answer ✅Answer: B Rationale:
The sphenozygomatic suture area has been previously analyzed and
shown to be an area for confirmation of alignment of the zygomatic
arch and the zygomatic complex (ZMC). This has also been shown
to key point for fixation thru biomechanical studies.
The sphenozygomatic suture is a broad area along the greater wing
of the sphenoid and can be approached along the internal aspect of
the lateral orbit. Even in severe midface fractures the greater wing
of the sphenoid is intact thus acting as a key landmark for proper
reduction of the ZMC fracture.
Reduction of the frontozygomatic suture or the infraorbital rim
alone can result in errors due to the small surface area. The medial
orbit is generally not involved in a ZMC fracture.
,OMSITE 2006 Exam Questions With
100% Verified Answers
Reference:
Rohner D, Tay A, Meny CS, Hutmacker DW, Hammer B.: The
sphenozygomatic suture as a key site for osteosynthesis of the
orbitozygomatic complex in panfacial fractures: A biomechanical
study in human cadavers based on clinical practice. Plast Reconstr
Surg 110: 1463, 2002.
Manson PN, Clark N, Robertson B, et al. Subunit principles in
midface fractures: the importance of sagittal buttresses, soft tissue
reductions and sequencing treatments of segmental fractures. Plast
Reconstr Surg 103: 1287, 1999.
1. When the medial canthal ligament is attached to a bony segment
in naso-orbito-ethmoidal(NOE) fracture repair the transcanthal wire
is best placed:
A. after all soft tissue injuries have been addressed.
B. anterior to the original insertion of the canthal ligament.
C. posterior and inferior to the original insertion.
,OMSITE 2006 Exam Questions With
100% Verified Answers
D. posterior and superior to the original insertion. -
correct answer ✅Answer: D Rationale:
The purpose of the trans-canthal wire is to secure the canthal
ligament and boney segment in the pretraumatic position. Pull of
the soft tissues displaces the bone and canthal ligament in an
anterior and inferior direction. Therefore a wire placed posterior
and superior to the original insertion provides a vector whose
resistance to displacement is most ideal and provides the best
alignment.
Reference:
OMS Knowledge Update, Volume three, Section 6. Abubaker AO
and Strauss RA, eds. p TRA 75-76. Classification D - Trauma - Soft
tissue Oral and Maxillofacial Surgery In- Training Examination
(OMSITE) questions for the Trauma Section.
1. A 21-year-old female is an unrestrained driver involved in a MVA.
She suffers a scalp laceration and is noted to have lost 1000mL of
blood at the scene. You would expect her vital signs to be
consistent with:
, OMSITE 2006 Exam Questions With
100% Verified Answers
A. Pulse rate >100, normal systolic blood pressure, decreased pulse
pressure, respiratory rate of 20-30, urinary output of 20-30mL/hr.
B. Pulse rate <100, normal systolic blood pressure, normal or
increased pulse pressure, respiratory rate of 14-20, urinary output
of >30mL/hr.
C. Pulse rate >120, decreased systolic blood pressure, decreased
pulse pressure, respiratory rate of 30-40, urinary output of 5-
15mL/hr.
D. Pulse rate >140, decreased systolic blood pressure, decreased
pulse pressure, respiratory rate of >35, urinary output that's
negligible. -
correct answer ✅Answer: A Rationale:
These findings are consistent with a Class II hemorrhage, 750-
1500ml, The vitals signs or such a blood loss are consistent with
those in response A. Response D reflects the vital signs of a Type IV
blood loss, Response C a Type III and Response B a Type I.
Reference:
1997 ATLS for Doctors, Sixth Edition.
100% Verified Answers
1. Alignment of which of the following is the most reliable for
proper reduction of the zygomaticomaxillary complex fracture?
A. Frontozygomatic suture
B. Sphenozygomatic suture
C. Infraorbital rim
D. Medial orbital rim -
correct answer ✅Answer: B Rationale:
The sphenozygomatic suture area has been previously analyzed and
shown to be an area for confirmation of alignment of the zygomatic
arch and the zygomatic complex (ZMC). This has also been shown
to key point for fixation thru biomechanical studies.
The sphenozygomatic suture is a broad area along the greater wing
of the sphenoid and can be approached along the internal aspect of
the lateral orbit. Even in severe midface fractures the greater wing
of the sphenoid is intact thus acting as a key landmark for proper
reduction of the ZMC fracture.
Reduction of the frontozygomatic suture or the infraorbital rim
alone can result in errors due to the small surface area. The medial
orbit is generally not involved in a ZMC fracture.
,OMSITE 2006 Exam Questions With
100% Verified Answers
Reference:
Rohner D, Tay A, Meny CS, Hutmacker DW, Hammer B.: The
sphenozygomatic suture as a key site for osteosynthesis of the
orbitozygomatic complex in panfacial fractures: A biomechanical
study in human cadavers based on clinical practice. Plast Reconstr
Surg 110: 1463, 2002.
Manson PN, Clark N, Robertson B, et al. Subunit principles in
midface fractures: the importance of sagittal buttresses, soft tissue
reductions and sequencing treatments of segmental fractures. Plast
Reconstr Surg 103: 1287, 1999.
1. When the medial canthal ligament is attached to a bony segment
in naso-orbito-ethmoidal(NOE) fracture repair the transcanthal wire
is best placed:
A. after all soft tissue injuries have been addressed.
B. anterior to the original insertion of the canthal ligament.
C. posterior and inferior to the original insertion.
,OMSITE 2006 Exam Questions With
100% Verified Answers
D. posterior and superior to the original insertion. -
correct answer ✅Answer: D Rationale:
The purpose of the trans-canthal wire is to secure the canthal
ligament and boney segment in the pretraumatic position. Pull of
the soft tissues displaces the bone and canthal ligament in an
anterior and inferior direction. Therefore a wire placed posterior
and superior to the original insertion provides a vector whose
resistance to displacement is most ideal and provides the best
alignment.
Reference:
OMS Knowledge Update, Volume three, Section 6. Abubaker AO
and Strauss RA, eds. p TRA 75-76. Classification D - Trauma - Soft
tissue Oral and Maxillofacial Surgery In- Training Examination
(OMSITE) questions for the Trauma Section.
1. A 21-year-old female is an unrestrained driver involved in a MVA.
She suffers a scalp laceration and is noted to have lost 1000mL of
blood at the scene. You would expect her vital signs to be
consistent with:
, OMSITE 2006 Exam Questions With
100% Verified Answers
A. Pulse rate >100, normal systolic blood pressure, decreased pulse
pressure, respiratory rate of 20-30, urinary output of 20-30mL/hr.
B. Pulse rate <100, normal systolic blood pressure, normal or
increased pulse pressure, respiratory rate of 14-20, urinary output
of >30mL/hr.
C. Pulse rate >120, decreased systolic blood pressure, decreased
pulse pressure, respiratory rate of 30-40, urinary output of 5-
15mL/hr.
D. Pulse rate >140, decreased systolic blood pressure, decreased
pulse pressure, respiratory rate of >35, urinary output that's
negligible. -
correct answer ✅Answer: A Rationale:
These findings are consistent with a Class II hemorrhage, 750-
1500ml, The vitals signs or such a blood loss are consistent with
those in response A. Response D reflects the vital signs of a Type IV
blood loss, Response C a Type III and Response B a Type I.
Reference:
1997 ATLS for Doctors, Sixth Edition.
