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Answer the following questions

  1. A child fell in the playground and cut her hand on a piece of glass. The cut extended across her wrist from the lateral border to the midline, just distal to the pisiform bone. The cut was deep and the physicians in emergency were concerned about a possible peripheral nerve lesion. Which nerve were they probably most concerned about and what motor and sensory tests would they do to check if this nerve had been damaged?

 

The child’s mother had been diagnosed with carpal tunnel syndrome. How would the pattern of injury in the mother’s hand differ from that of the child? Position your hand in the way you think the hand would appear with each of the two lesions described.

 

 

  1. A patient presented at an orthopedic clinic with a history of a dislocated right hip, and injury to the superior gluteal nerve. He had what is referred to as a Trendelenburg gait. As he began the swing phase with the left leg, his left hip dropped excessively, making it difficult to swing his left leg through and clear the floor with his foot.

Which muscle is involved in this injury and how does that cause the hip to drop excessively on the left side? This problem contrasts with the problem of “foot drop” (paralysis of the muscles in the anterior compartment of the leg), resulting from damage to the local nerves in the anterior compartment of the leg or damage to the motor system at a higher level, such as the motor cortex or possibly at the nerve root.

  1. The students in a practical lab were learning how to maintain length of the hip flexors by stretching. The instructor said that some of them were doing it correctly but others had not remembered the important concept they needed to be able to stretch the entire hip flexor. The instructor said, “The answer lies in their attachments.” What do you think the students were forgetting about the hip flexor muscle attachments?
  1. Having sustained a soft tissue injury to the front of his leg just an hour earlier, a young man complains of intense pain and numbness. He is unable to feel a pinprick on the front of his leg or toes and is rapidly losing the ability to dorsiflex his ankle. What do you think may be happening to this man’s leg and what is the anatomical basis of this problem?

 

 

 

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Category: Sample Questions