Musculoskeletal Flashcards
What lesion would cause this?
Traction/tear of upper trunk = Erb Palsy
C5-6 nerve roots
What lesion would cause this?
Traction/tear of lower trunk = Klumpke palsy
C8-T1
What MS deficit might a pancoast tumor cause?
Compression of lower trunk = atrophy of intrinsic hand muscles, ischemia, and pain
Thoracic outlet syndrome
Same muscles as klumpke palsy
What lesion would cause this?
Long thoracic nerve
Winged scapula
Axillary node dissection/stab wound
What deficit would this cause?
Ant dislocation/fx surgical neck of humerus
Axillary nerve
Flattened deltoid, loss of arm abduction > 15˚, LOS over deltoid and lateral arm
Upper trunk compression can hit the musculocutaneous nerve and cause what symptoms?
Loss of forearm flexion/supination
Loss of sensation over lateral forearm
What injury might this cause?
Radial nerve damage - loss of elbow, wrist and finger extension
Wrist drop
↓ grip strength
LOS posterior arm/forarm, dorsal hand
**also axilla compression - arm over chair, crutches*
What deficit would this cause?
Supracondylar humerus fx - Median n.
Pope’s blessing - can’t flex lateral digits
LOS over thenar eminence nad dorsal/palmar aspects of lateral 3.5 fingers
What might this cause?
Proximal ulnar nerve lesion - OK gesture
Can’t flex medial two digits
Radial deviation of wrist upon flexion
What might a superficial laceration of the palm lead to?
Laceration of recurrent branch of median nerve
Loss of thenar muscle group - opposition, abduction, & flexion
**No LOS**
Clawing is best seen with ________ lesions.
Distal - present at rest
Can’t extend
Injury to the obturator nerve via pelvic surgery leads to what deficits?
↓ Medial thigh sensation
↓ adduction
Injury to the femoral nerve via pelvic fx leads to what deficits?
↓ thigh flexion and leg extension = Quads
Injury to the common peroneal n. leads to what deficits?
Foot drop
Loss of eversion and dorsiflexion
LOS on dorsum of foot
What might this injury cause?
Common peroneal/fibular nerve injury = Foot drop
fibular neck fx
Tibial nerve injury can lead to what deficits?
Inability to curl toes & LOS on sole of foot
Proximal = loss of plantarflexion/inversion
The trendelenburg sign/gait
Weakness of side opposite drop to ABduct
Superior gluteal nerve
Medius and minimus
Difficulty climbing stairs, rising from seated position, and loss of hip extension are indications of what?
Inferior gluteal n. = gluteus maximus
Posterior hip dislocation
A posterior hip dislocation can damage whta two nerves?
Superior gluteal = minimus and medius
Inferor gluteal = maximus
What nerve runs along the surgical neck of the humerus?
Axillary nerve - Posterior circumflex artery
What nerve runs along the midshaft of the humerus?
Radial nerve & deep brachial artery
What nerve runs along the distal humerus/cubital fossa?
Median nerve and brachial artery
What nerve is in the the popliteal fossa?
Tibial nerve and popliteal artery
What nerve is posterior to the medial malleolus?
Tibial nerve and Posterior tibial artery
