NPTE-PT Musculoskeletal System Interventions 3

Question 1

A patient 6 weeks post total knee arthroplasty is having difficulty achieving full knee extension. Which intervention should be prioritized?

Accepted Answer

Terminal knee extension exercises and prone knee extension stretching

Answer

Achieving full knee extension after TKA is critical to prevent flexion contracture; terminal knee extension exercises and prolonged low-load stretching in prone are prioritized.

Question 2

Which soft tissue mobilization technique involves applying pressure perpendicular to the muscle fiber direction to break up adhesions?

Accepted Answer

Cross-friction massage

Answer

Cross-friction massage (Cyriax technique) applies transverse pressure perpendicular to tissue fibers to break adhesions and promote proper collagen remodeling.

Question 3

A patient with patellofemoral pain syndrome shows weakness in which muscle group that most commonly contributes to the condition?

Accepted Answer

Hip abductors and external rotators

Answer

Weakness in hip abductors and external rotators leads to dynamic valgus collapse and increased lateral patellar stress, contributing to PFPS.

Question 4

When using neuromuscular electrical stimulation (NMES) for quadriceps strengthening post-ACL reconstruction, which parameter produces the strongest muscle contraction?

Accepted Answer

High frequency (50–80 Hz), long pulse width

Answer

High frequency (50–80 Hz) with a longer pulse width (200–400 µs) recruits more motor units and produces the strongest tetanic muscle contraction for NMES.

Question 5

Which orthopedic special test is used to assess for a SLAP lesion of the shoulder?

Accepted Answer

Active compression (O'Brien's) test

Answer

O'Brien's active compression test is specifically designed to detect SLAP lesions and AC joint pathology through resisted internal and external rotation in flexion.

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NPTE-PT Musculoskeletal System Interventions 3