Natasha, I can definitely see your reasoning on this, however what I was trying to go for in the question was pointing out that the plantar flexors which will be innervated by the tibial nerve are weaker than the dorsiflexors as shown in the manual muscle testing. Also the clinical picture points strongly to posterior tibial tendon dysfunction which would also be innervated by the tibial nerve. When you sit down and take the actual OCS test keep in mind that a lot of the times two answers will seem correct but dive back into the question to see if there’s any evidence to further validate one choice or the other.
Let me know if you have any further questions and happy studies!
