Orthopedics Hyperguide Review | Dr Hutaif General Ortho -...

QUESTION 1

It is possible to downsize without notching by cutting the distal femur in:

1

5Â° varus

2

5Â° valgus

3

3Â° flexion

4

10Â° flexion

5

3Â° extension

QUESTION 2

The consequence of flexing the femoral component of a posterior cruciate-retaining system is:

1

Flexion contracture

2

Flexion gap

3

Extension contracture

4

Decreased range of motion

5

No consequences

QUESTION 3

Mathematical modeling shows that a round stem versus a rectangular stem in the mid and distal cross-section can increase cement stress up to:

1

50%

2

100%

3

150%

4

200%

5

250%

QUESTION 4

Place the following strategies for treating deep infection in total hip replacement in order of their effectiveness from 1 to 4, with
1 being the most effective. 1. No antibiotics 2. SystemiCantibiotics alone 3. AntibiotiCbone cement alone 4. AntibiotiCbone cement plus systemiCantibiotics

1

1,2,3,4

2

2,4,3,1

3

4,2,3,1

4

3,2,4,1

5

4,3,2,1

QUESTION 5

Which of the following bone cements is associated with the lowest risk ratio in assessing the risk of deep infection in revision total hip replacement:

1

Simplex (Howmedica, Allendale, NJ) bone cement

2

Palacos gentamicin bone cement

3

Palacos bone cement

4

CMW bone cement

5

Vancomycin in bone cement

QUESTION 6

A midline skin incision is the preferred skin incision in total knee replacement because:

1

A midline skin incision is less disruptive of the arterial network.

2

A midline skin incision is less disruptive of the sensory nerves.

3

A midline skin incision gives better exposure.

4

A midline skin incision preserves the extensor mechanism.

5

A midline skin incision is less disruptive of the lymphatiCsystem.

QUESTION 7

When performing a total knee replacement, posterior stability can be achieved by all of the following except:

1

Soft tissue

2

The implant

3

Retention of posterior cruciate ligament

4

Resection of the posterior cruciate ligament

5

Resection of the anterior cruciate ligament

QUESTION 8

Recurrent hemarthrosis of the knee following total knee replacement may be secondary to all of the following except:

1

Entrapment of the synovium between the tibiofemoral articulation

2

Entrapment of the fat pad between the tibiofemoral articulation

3

A lax knee

4

Entrapment of the synovium between the patellofemoral articulation

5

Contracted knee

QUESTION 9

After total knee replacement, posterolateral knee pain is due to all of the following except:

1

Component overhang

2

Scarring, more commonly seen in a valgus knee

3

Posterolateral osteophytes

4

Undersized component

5

Popliteus tendonitis

QUESTION 10

Pes anserine bursitis that occurs after total knee replacement can be associated with all of the following except:

1

Anteromedial overhang of the component

2

Residual varus alignment

3

Inadequate removal of medial osteophytes

4

Pes anserine bursitis is an idiopathiCoccurrence and not related to total knee replacement

5

Anterolateral overhang of the component

QUESTION 11

All of the following statements are true regarding the Bernese osteotomy except:

1

The Bernese osteotomy was popularized by Ganz.

2

The Bernese osteotomy is a reorientation osteotomy.

3

The Bernese osteotomy allows for unrestricted correction while keeping the pelviCring intact.

4

The Bernese osteotomy can be used in approximately 15% of dysplastiChips.

5

The Bernese osteotomy can be used only in anteverted dysplastiChips.

QUESTION 12

The two most commonly used scoring techniques to assess and report the results of knee arthroplasty are the Hospital for Special Surgery knee score and the Knee Society score. Although they are the most commonly used scoring techniques, their main weakness is:

1

Examiner and intraobserver bias

2

Can only be used in patients with osteoarthritiCknees

3

Based on questionairre completed by the patient

4

Derived from patient outcomes

5

Has no intervention of a health care provider

QUESTION 13

Which of the following scoring techniques is the weakest when used to compare specifiCphysical dynamics of a prosthesis:

1

Hospital for Special Surgery knee score

2

Knee Society score

3

Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score

4

Iowa knee score

5

Mayo CliniCknee score

QUESTION 14

What percentage of nonsteroidal anti-inflammatory drug (NSAID) users annually develop a serious gastrointestinal (GI)
complication:

1

2%

2

4%

3

10%

4

15%

5

20%

QUESTION 15

Nonsteroidal anti-inflammatory drugs (NSAIDs) work by:

1

Inhibiting the conversion of arachidoniCacid to prostaglandin

2

Increasing prostaglandin synthesis

3

Increasing the level of prostaglandin in the joint

4

Increasing glycosaminoglycan synthesis

5

Decreasing glycosaminoglycan synthesis

Orthopedics Hyperguide Review | Dr Hutaif General Ortho -...

Key Medical Takeaway

ORTHOPEDICS HYPERGUIDE MCQ 101-150