MPT Master of Physical Therapy 3 — Questions and Answers
Question 1: A patient post-ACL reconstruction is 4 weeks post-op. Which criterion must be met before initiating running on a treadmill?
- Full passive knee extension and at least 90° of knee flexion (Correct answer)
- Quadriceps index ≥90% and pain-free jogging
- Normal knee joint effusion and 120° of flexion
- Negative Lachman test and full ROM
Correct answer: Full passive knee extension and at least 90° of knee flexion
Full passive extension and at least 90° of flexion are the standard ROM criteria to clear a patient for early functional progression after ACL reconstruction before introducing running.
Question 2: Which type of muscle contraction produces the greatest force at the lowest metabolic cost?
- Concentric isotonic
- Eccentric (Correct answer)
- Isometric at mid-range
- Isokinetic concentric
Correct answer: Eccentric
Eccentric contractions generate more force than concentric contractions while consuming less ATP, making them the most mechanically efficient type of muscle contraction.
Question 3: According to the Guide to Physical Therapist Practice, which term describes a specific cluster of signs and symptoms that guides PT intervention?
- Medical diagnosis
- Practice pattern
- Clinical prediction rule
- Preferred practice pattern (Correct answer)
Correct answer: Preferred practice pattern
Preferred practice patterns in the Guide to Physical Therapist Practice group patients with similar impairments and functional limitations to guide examination and intervention.
Question 4: A patient with COPD shows paradoxical breathing. Which pattern is observed?
- Abdomen rises while chest falls during inspiration
- Both chest and abdomen rise simultaneously during expiration
- Chest rises while abdomen falls during inspiration (Correct answer)
- Prolonged expiration with pursed-lip breathing
Correct answer: Chest rises while abdomen falls during inspiration
Paradoxical breathing is characterized by the chest rising while the abdomen falls (or moves inward) during inspiration, opposite to normal diaphragmatic breathing.
Question 5: Which dermatome corresponds to the C6 nerve root?
- Thumb and index finger (Correct answer)
- Middle finger
- Ring and little finger
- Lateral forearm only
Correct answer: Thumb and index finger
The C6 dermatome covers the lateral forearm, thumb, and index finger, and is tested with light touch or pinprick in those areas.
Question 6: A PT uses ultrasound at 3 MHz frequency. Compared to 1 MHz, which statement is TRUE?
- 3 MHz penetrates deeper and heats deeper tissues more effectively
- 3 MHz is absorbed more superficially and is best for structures within 1–2 cm (Correct answer)
- 3 MHz produces greater cavitation at depth
- 3 MHz is preferred for treating large muscle groups
Correct answer: 3 MHz is absorbed more superficially and is best for structures within 1–2 cm
Higher frequency (3 MHz) ultrasound is absorbed more rapidly in superficial tissues (within 1–2 cm), while 1 MHz penetrates to 3–5 cm depth.
Question 7: Which APTA ethical principle requires a PT to provide truthful information to patients so they can make informed decisions?
- Beneficence
- Autonomy
- Veracity (Correct answer)
- Justice
Correct answer: Veracity
Veracity is the ethical principle requiring honesty and truthful communication so patients can exercise informed consent and autonomous decision-making.
MPT Master of Physical Therapy 3
A patient post-ACL reconstruction is 4 weeks post-op.
Which criterion must be met before initiating running on a treadmill?