KBQ's

What is the most common type of scaphoid fracture?

Waist

Using the most common classification for ankle fractures, describe the following fracture of this right ankle. (Pic: fibula shaft fx, dislocation of tibial/talar joint)

Weber C

Can you insert a Reunion humeral stem with the broach handle? Y/N?

Yes

Why is having Poly-axial Locking Peripheral Screws Important?

a.) Allows Inferior/Superior Screws to Diverge b.) Allows Anterior/Posterior Screws to Converge c.) Allows for Locking Screws to be Anchored into wherever the best bone quality may be located d.) ALL OF THE ABOVE D

Which of the following are important for implant survivorship? (PIC: Glenoid implant with peripheral screws sticking out of it)

a.) Limiting micromotion with compression, and locking screws b.) Anchoring screws into the best bone quality c.) A 3D in-growth or biological surface d.) ALL OF THE ABOVE D

Remelted polyethylene ________________ (Check all that apply.)

a.) has an altered crystalline structure. c.) has compromised mechanical properties.

The most prominent feature of the femoral shaft is its:

anterior bow

On a lateral x-ray of a distal femur fracture, the proximal break is posterior to the distal segment of the femur/joint. The position of the distal segment would best be described as being in:

extension

Which of the following design features gives surgeons a better view of the joint line when using the AxSOS Distal Femoral Targeter?

highly radiolucent targeting arm & targeting arm angled anterior to the joint

A rep can find the most up to date information on VariAx SpeedGuide, by going to the ______ Trauma app. (One word, all lower case.)

iSell

Use of the set screw _____________ optional in the Gamma 3 system.

is NOT OPTIONAL

The initial position of the SpeedGuide can be verified when the tip is securely engaged in the plate and the drill is in _____ mode. (One word, all lower case.)

lock

The process of forming bone tissue is referred to as ______________. (One word, all lowercase.)

ossification

Cells that destroy and remove unwanted bone are called:

osteoclasts

Where is the Talus located?

proximal ankle, just distal to the tibia.

The T__ SpeedGuide may be used with the VariAx Distal Radius Aiming Block. (One word, all lower case.)

seven

The VariAx Elbow Locking Plates offer how many degrees of variable angle locking?

+/- 15 degrees

The three key marketing statements for VariAx SpeedGuide are: (Choose the three that apply.)

1. Accurate 2. Efficient 3. One-handed

Put the following steps for preparing Simplex cement in the correct order:

1. Add the powder to the bowl. Make sure you add the entire contents of the pouch. 2. Put the liquid in the bowl. Make sure to add all the contents of the container. 3. Use slow even mixing action for 1 - 2 minutes. 4. Inject into cement canal or wait for it to dough for hand-packing.

What are the AO Principles of Internal Fixation? (4)

1. Anatomic Reduction of all Fracture Fragments 2. Preservation of the Blood Supply 3. Rigid Stabilization with Internal Fixation 4. Early Motion of the Limb or Joint

Correctly rank the four stages of bone healing.

1. Inflammation & Hematoma Formation 2. Soft Callous Formation 3. Hard Callous Formation 4. Bone Remodeling

Arrange these steps, for Hoffmann LRF telescopic strut adjustment, in order. (5)

1. Loosen the colored safety nut down to the etched line 2. Unlock the quick release mechanism 3. Adjust strut to desired length 4. Lock quick release mechanism 5. Hand tighten the colored safety nut

What screw option is not available in the VariAx Hand System?

1.2 mm locking

Which of these nail lengths is not available for the T2 Ankle Arthrodesis Nail?

100 mm

The Herzog Bend found on the T2 Tibial Nail is another name for the:

10° Proximal Bend

Which of the following neck angles is offered in the T2 Femur/Recon Nail?

125

The normal neck-shaft angle in an adult is generally accepted to be:

125°

What is the neck angle on the Reunion TSA humeral stem?

135 degrees

The different lengths of T2 Tibial Nails are offered in ___mm increments.

15

What heights are the 48mm humeral heads available in?

15, 18, 21, and 24 mm

Which are the two most common distal humerus plating fixation techniques?

180 degree plating & 90 degree plating

What screw diameter options are offered in the Micro Asnis Cannulated Screw set?

2.00 mm & 3.00 mm

What screw option is not available in the VariAx Locking Foot Plate system?

2.3 mm

What screw/peg diameter size options does the VariAx Distal Radius offer?

2.3 mm, 2.7 mm, & 2.0 mm

Radius of Curvature (ROC) is a term used to describe how much bend that certain IM nails have. Which of the following nails would have the least amount of bend or bow?

2.5M ROC... HIGHER ROC = lower bend/bow

What screw diameter option is not available in the Profyle Hand or VariAx Hand set?

2.7 mm

T2 Femoral Nails are offered in lengths ranging from 240-480mm in _____mm increments.

20

How many standard stem options are there in the Reunion TSA system?

21

Tip-Apex Distance greater than what distance (in mm) is associated with increased cutout and should therefore be avoided?

25

When using an AxSOS Proximal Lateral Tibia locking plate, if a surgeon wishes to lag the bone to the plate, which screw(s) could he/she use to accomplish this?

3.5 Cortical Screw & 4.0 Cancellous Screw

What screw diameter does the VariAx Distal Fibula Plate accept?

3.5 mm (just 3.5, NOT 2.7)

Which T2 Ankle Arthrodesis Nail does not have targeted proximal locking screws with the radiolucent targeting device?

300 mm

Hoffmann LRF has how many different telescopic strut sizes?

4

How many locking screw hole options are available at the proximal end of the T2 Proximal Humeral Nail (PHN)?

4

How many long stem options are there in the system?

4

The first digit in the AO/OTA classification system of a tibia fracture is ___.

4

What diameters are the humeral heads available in?

40 , 44 , 48 , 52 , and 56 mm

Hoffmann II MRI pin-to-rod clamps (Grey/Green) accept which of the following pin diameters?

4mm & 5mm

The 5 & 10 hole multi-pin clamps in the Hoffmann II MRI system accept which of the following pin sizes?

4mm, 5mm, & 6mm

How many sizes do the pegged glenoids come in?

5

The T2 Ankle Arthrodesis Nail is designed with how many degrees of lateral (valgus) bend?

5 degrees

The VariAx Elbow Locking Plate system offers how many plate options for both the distal humerus and olecranon (not including left/right options)?

5 distal humerus and 1 olecranon

Which of the following is NOT a feature of the Trochanteric (Short) Gamma 3?

6.28mm Distal Screws

How many locking screw hole options are there in the metaphyseal portion of the AxSOS Proximal Humeral Plate?

7

How many tarsal bones are in the foot?

7

The T2 Tibial Nail offers how many millimeters of compression through the use of the advanced compression screw and the proximal oblong slot?

7

What percentage of an External Fixator's frame stability comes from the pins attaching the frame to the bone?

70%

What is the diameter option(s) for the T2 Proximal Humeral Nail?

8 mm

What is the rod diameter in the Hoffmann II and Hoffmann II MRI systems?

8mm

XRAY OF HIP WITH YELLOW TUBE IN IT, What is the yellow tube?

A field traction splint

Which of the following would be the implant(s) of choice for a non-displaced sub-capital femoral neck fracture?

ASNIS III Cannulated Screws

Which of the following is not true regarding the dual thread locking design of the AxSOS plates and screws?

Allows surgeon to push screw as they insert it into bone

What is an "indication for use"?

An FDA document stating how an implant may be used

When a person stands with toes, palms, and face to the front, this is known as the _________________ position.

Anatomic

Of the 2 "Necks" of the shoulder, which is more proximal?

Anatomic Neck

Hoffmann LRF independent rocker shoe design is important when trying to compensate for an ____________ foot ring.

Angled

Which of the following would be the best implant of choice for an intra-articular, comminuted distal femur fracture?

AxSOS Distal Femoral Plate

Which one of these fracture types is not a metacarpal base fracture?

Baby Bennett BOXERS <-- Rolando Bennett

What is this fracture of the 1st MC base classified as?

Bennett Fracture

Which drill guide is used with the SPS system when placing a screw in the buttress position through a basic fragment compression plate?

Black

When countersinking a retrograde femoral nail, what anatomical landmark should be used to insure that the nail is deep enough in the bone?

Blumensaat's line

What compression options are available in the T2 Ankle Arthrodesis Nail?

Both internal and external compression

What type of material is HydroSet?

Calcium Phosphate

Irradiation creates free radicals in the polyethylene molecules mainly due to the breaking of these bonds:

Carbon - Hydrogen bonds

Which one of these is not a feature of the ReUnion HA Fracture System?

Cementless (press fit) titanium humeral stem implant

What do you call an intra-articular fracture of the radial styloid, which is usually caused by a direct blow?

Chauffeur's Fracture

The Anterior and Posterior _________ Humeral Artery circles the proximal humerus and is the major blood supply to the articular surface.

Circumflex

What extra-articular distal radius fracture has dorsal displacement of the fracture fragment, also known as an extension fracture?

Colles'

What extra-articular distal radius fracture has dorsal displacement of the fracture fragment?

Colles'

The condition in which increased pressure within a muscle compartment cuts off blood supply to the muscles, resulting in cell death, is known by what term?

Compartment Syndrome

When you have two fractures on the opposite sides of the body it is referred to as:

Contralateral

Hybird locked plating refers to the use of both compression screws and locking screws in the same construct. When using both conventional screws and locking screws in the same plate, which screws should be placed first?

Conventional Screws

Which one of these is not a design goal of the ReUnion Fracture System?

Correct implant compression

"Normal" Femoral neck Angles range between 120 degrees to 135 degrees. Femoral Neck angles greater than 135 degrees are described by which of the terms below?

Coxa Valga

The process of using ionizing irradiation on virgin polyethylene to break apart bonds between molecules so that they can reform and strengthen the polyethylene is called?

Crosslinking

Tarsal Bone lateral to Navicular is:

Cuboid

When measuring the depth with SpeedGuide, drill until the far cortex is felt, add the thickness of the far cortex to the measurement on the scale, and then:

Drill the far cortex

What are these two structures, which the yellow lines are pointing to, referred to as?

Facets

A common complication (up to 18%) of distal third humeral shaft fractures is palsy of the unlar nerve? T/F?

False

Final tightening of the AxSOS locking screws with the torque limiter when using AxSOS plates is an optional step. T/F?

False

Like the long Gamma 3 nail, the T2 Femoral Nail offers nails in both left and right-side specific implants. T/F?

False

The Hoffmann II Micro is the only external fixator, from the Hoffmann II family, that does not use the single point of tightening for the pin-to-rod and rod-to-rod clamps. T/F?

False

The Omega Plus sideplate allows for the use of locking inserts. T/F?

False

The T2 Femur/Recon Nail accepts two 6.5mm ASNIS Cannulated Screws when used in Recon mode. T/F?

False

The T2 SCN has two targeting devices. One targeter is used only for the short nails and the other is used only for the long nails. T/F?

False

The Torque Limiting attachment in the AxSOS set can be used on power (with a power drill) when inserting screws.

False

Utilizing SpeedGuide has been shown to reduce the cone of angulation for VariAx locking screws from ±15° to ±10°. T/F?

False

All T2 Tibia Nails use 5mm locking screws in the distal holes.

False (4mm)

A Pilon fracture is an extra-articular fracture of the distal tibia. T/F?

False (INTRA-Articular)

On average, the humeral head is 30 degrees anteverted relative to the shaft of the humerus. T/F?

False (Retroverted)

All phalanges have a proximal, middle and distal phalanx? T/F?

False (Thumb = 2)

On average, the humeral head is 30 degrees anteverted relative to the shaft of the humerus. T/F?

False (retroverted)

Locking inserts may only be applied in AxSOS plates pre-operatively on the back table. T/F?

False. (May be applied Intra-op)

The 8mm T2 Tibial Nail should always be inserted over the 3x800mm Ball Tip Guide Wire. T/F?

False. (The 8mm nail will not fit over the ball)

HydroSet is an osteoinductive bone graft substitute. T/F?

False. (osteoconductive)

The lateral malleolus is the distal portion of what bone?

Fibula

Based on this X-ray study, the blue circle is around the _____________ . (PIC: Left hand with blue circle on thumb)

First Metacarpal

How many monoaxial locking holes are found in the metaphyseal end of the AxSOS Distal Femur plate?

Five

In what plane is this X-ray?

Frontal/Coronal, A/P

What do you call a Radial shaft fracture with a dislocation of the DRUJ?

Galeazzi Fracture

What is the classification system for open fractures?

Gustillo - Anderson

XRAY OF HIP WITH YELLOW TUBE IN IT, What are the oval structures in the background?

Handles on the backboard the patient was carried in on

Which Hoffmann II system components does the Stryker Dynamic Joint Distractor II (DJD II) mostly use?

Hoffmann II Compact

Which external fixation system would be appropriate for an open metacarpal fracture?

Hoffmann II Micro

What are the four parts (displaced fragments) when classifying a Neer 4-part fracture of the proximal humerus?

Humeral Head, Greater Tuberosity, Lesser Tuberosity & Shaft

This is an A/P and lateral X-ray of a fracture that is not healed. This particular one is referred to as: ( 2 pics have femur with integrate nail and large non attached callous formation in the center)

Hypertrophic non-Union

Based on the x-ray, why would this patient NOT be a candidate for a reverse shoulder arthroplasty? (PIC: Shoulder x-ray with red A,B,C,D)

In-tact subacromial space/lack of superior humeral migration

Which of the following actions would decrease the stiffness of an external fixator frame?

Increasing the distance between the nearest pins and the fracture site

When you have two fractures on the same side of the body it is referred to as:

Ipsilateral

__________ causes crosslinking and decreases wear.

Irradiation

Why is having so many Humeral Cup & PE Inserts beneficial?

It allows options for optimally tensioning the deltoid.

What are the two common types of calcaneal fractures?

Joint Depression Type & Tongue Type

This X-Ray view allows you to assess whether a fracture is shortened and/or flexed. Which view is it?

Lateral

Omega 3 is offered in both a standard barrel as well as a short barrel version. In what circumstance would the use of a short barrel implant be advantageous over the use of a standard barrel implant?

Lateral Intertrochanteric Fractures

What does a Ligament connect?

Ligaments connect bone to bone

Which one of these is not a design feature of the AxSOS Proximal Humeral Plate?

Low 2 mm plate profile

Which imaging study would a surgeon most likely choose if he wanted to visualize/assess the soft tissues (muscles, ligaments, tendons, etc)?

MRI

Cement is not glue. It is designed to:

Mechanically interlock with the surface of the prosthesis and with the spaces in cancellous bone

What do you call a fracture of the proximal half of the ulnar shaft with a dislocation of the radial head?

Monteggia Fracture

The gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus is:

Mortise Joint

Tarsal Bone anterior to talus is:

Navicular

Where is the Metaphysis of the bone?

Near the joints between the Epiphysis and Diaphysis

What is the most common classification for proximal humeral fractures, which is based on displacement and number of fragments?

Neer (1,2,3 and 4-part)

In this AP X-ray of the left ankle, the 1/3rd tubular plate on the fibula, used in conjunction with the lag screw, is serving which plate function?

Neutralization

Which fracture type is an isolated fracture of the ulnar shaft?

Nightsick

The most common treatment for a non-displaced proximal humeral fracture is:

Nonsurgical, Conservative Treatment

Which of the following screws would a surgeon use when wanting to lag two bone fragments together using a "lag by design" technique?

Partially-threaded Cancellous screw

What are the glenoid design options?

Pegged and Keeled

The black circle represents which common entry point for antegrade femoral nailing?

Piriformis Fossa

How do you determine which forearm bone is the ULNA?

Posteriorly: the Ulna includes the olecranon proximally. In Anatomic Position: the innermost medial of the 2 bones.

Which of these is not a feature of the VariAx Distal Fibula plate?

Pre-contoured left and right specific plates

Where is the CORONOID Process located?

Proximal Anterior ridge of Ulna

Which one of these products is the Stryker hemiarthroplasty appropriate for a proximal humeral fracture?

ReUnion HA Fracture System

Select the group of muscles that are all part of the quadriceps.

Rectus Femoris, Vastus Lateralis, Vastus Medialis, and Vastus Intermedius

Is this injury to the right or left hand of the patient? (PIC: Hand with half of it blown off, and X-ray)

Right

Which product is not offered in the AxSOS Extremity Plating System?

SPS Calcaneal Plate

The _________ Classification is the classification for tibial plateau fractures.

Schatzker (6 Types)

What extra-articular distal radius fracture has volar displacement of the fracture fragment, also known as a flexion fracture?

Smith's

What extra-articular distal radius fracture has volar displacement of the fracture fragment?

Smith's

Describe the Coronal (Frontal) Plane

Splits the body in anterior/posterior pieces. ex) coronal plane enters center of head, anterior portion has face, toes/posterior portion has butt.

Describe the Sagittal Plane

Splits the body in medial/lateral pieces. ex) Sagittal plane directly between eyes = one eye, arm, leg/other eye, arm, leg.

Describe the Transverse Plane

Splits the body in proximal and distal halves. ex) transverse plane directly through waist = head and torso/legs

Flaws or irregularities that increase the amount of stress seen by a material are known as:

Stress Risers

Which company was the first to introduce highly-crosslinked PE in the humeral cup and glenoid component for shoulder arthroplasty?

Stryker

This patient is in the _____________ position. (PIC: 2 pics of ankle arthrodesis procedure, 1 digital, 1 real with toes up)

Supine

What are the four muscles of the rotator cuff?

Supraspinatus, Infraspinatus, Teres Minor & Subscapularis

Which one of these T2 nails has threaded proximal holes with a nylon ring to help improve stability and help prevent screw back-out?

T2 Proximal Humeral Nail

Which one of these products is not appropriate for a proximal humeral fracture?

T2 Standard Humeral Nail

The VariAx Foot is indicated for all the following except:

Talo-Navicular (TN) Arthrodesis Calcaneus fractures METACARPAL FRACTURES <-- Metatarsal Phalangeal Joint (MPJ) Arthrodesis

The Lisfranc Joint is also known as:

Tarso-metatarsal Joint

What does a Tendon connect?

Tendon connects muscle to bone

____________ are dense fibrous connective tissue cords that connect skeletal muscles to bone. (One word, all lowercase.)

Tendons

Where is the ischium located?

The distal and lateral portion of the pelvic ring.

When inserting the Gamma 3, the depth of nail insertion is determined by which of the following?

The location of the Lag Screw in the Femoral Head / Neck

Which of the two locations identified in this image is the proper entry point for inserting a T2 Tibial Nail?

The one on the left. Just medial to the lateral tibial spine (Blue).

Where is the Diaphysis of the bone?

The shaft

What is the most likely reason these k-wires are being used in this tibial plateau fracture?

They are maintaining the reduction of the articular surface

The "size" of a screw is determined by its:

Thread diameter

For equidistant spacing of three struts on a circular ring, what symbol on the ring should you reference?

Triangle

A bimalleolar fracture is when both the medial malleollus and the lateral malleollus are fractured at the same time. T/F?

True

An Intramedullary Nail that has been statically locked is one where the nail has been locked into position on the bone in such a way that the bony segments cannot move in relation to one another. T/F?

True

An olecranon osteotomy is commonly done to gain exposure to the distal humeral articular surface, when performing an ORIF of an AO/OTA 13-C3. T/F?

True

Fixed angle locking may be achieved in the T2 SCN by using an end cap to engage the distal-most locking bolt or fully threaded screw. T/F?

True

Free-hand locking in a retrograde T2 Femoral nail (using the holes at the end of nail closer to hip) is accomplished by placing screws in one or both of the A-P holes. T/F?

True

HydroSet is indicated to fill bony voids or gaps of the skeletal system that are not intrinsic to the stability to the bony structure. T/F?

True

Locked plating constructs do not rely on friction forces for stability and therefore do not need to contact the bone directly to achieve fixation. T/F?

True

Normal Ulnar height should be within ±1mm of the Radial articular surface. T/F?

True

Omega 3 Side Plates are offered in both a keyed and keyless version. T/F?

True

The Fibula is located Lateral to the tibia. T/F?

True

The Hoffmann II Compact can be used for both bridging and non-bridging wrist frames. T/F?

True

The Omega 3 side plates accepts locking inserts from the 5.0 AxSOS system. T/F?

True

The Stryker Dynamic Joint Distractor II (DJD II) can be used for medial or lateral frames on the elbow? T/F?

True

The Tibial Plafond refers to the distal tibia articular surface. T/F?

True

The VariAx Distal Radius Plating system has both fixed angle and variable angle drill guides? T/F?

True

The main concern when placing a patient with an external fixator in the MRI is heating of the pins resulting in possible thermal injury to the bone. T/F?

True

The majority of humeral shaft fractures are treated conservatively. T/F?

True

The radial head articulates with the capitellum. T/F?

True

The scaphoid is the most common carpal fractured? T/F?

True

The syndesmosis is where two bones are held together by thick connective ligaments. T/F?

True

Traditional high viscosity bone cements are not able to penetrate cancellous bone as well as medium viscosity cements. T/F?

True

VariAx Distal Fibula Plate is indicated for distal fibula non-unions and malunions. T/F?

True

The Coughlin Reamer System is primarily used for joint preparation in 1st MPJ small joint fusions. T/F?

True. (Cup and Cone reamers)

At what level should the surgeon make their skin incision when preparing to insert a Gamma 3 nail?

Two finger breadths proximal to the Greater Trochanter

Which plate is not offered in the VariAx Distal Radius Plating system?

Ulnar Shortening Plate

What does UHMWPE stand for?

Ultra High Molecular Weight Polyethylene

Which product is not appropriate for a distal radius fracture?

VariAx Locking Hand Plates

Where is the Epiphysis of the bone?

Very ends