Please confirm topic selection

Are you sure you want to trigger topic in your Anconeus AI algorithm?

Please confirm action

You are done for today with this topic.

Would you like to start learning session with this topic items scheduled for future?

Preoperative Patient Care
Operative Techniques
E

Preoperative Plan

1

Evaluate fracture

  • identify fracture pattern (extension vs. flexion), displacement (Gartland classification), comminution, angulation, and rotation based on initial xrays
  • gartland III and IV completely displaced fractures may have interposed brachialis muscle (skin puckering anteriorly on exam) may be more likely to require ORIF
  • verify that reduction is required
  • anterior humeral line not centered on capitellum (except in <3 yo- may be physiologic)
  • Baumann's angle less than 10 degrees/medial comminution present
  • critical to determine if lateral condyle vs. medial condyle vs. supracondylar fracture is present as these can be confused with each other
  • determine if posteromedial or posterolateral fragment present as this will affect reduction and potential nerve injury
  • examine or X-ray forearm to evaluate for possible forearm fractures (“floating elbow”)

2

Execute surgical walkthrough

  • describe key steps of the operation verbally to attending prior to beginning of case.
  • describe potential complications and the steps to avoid them
F

Room Preparation

P

1

Surgical instrumentation

  • smooth k-wires usually .062 or larger for older children

2

Room setup and equipment

  • setup OR with standard operating table
  • turn table 45- 90° so that operative extremity points away from Anesthesia machines
  • c-arm in from foot of bed
  • monitor in surgeon direct line of site on opposite side of OR table
Pearls
  • using a larger K-wire will give more stability, one can usually use a .062 K-wire in even the smallest child

3

Patient positioning

  • arm board centered at level of patient’s shoulder
  • can add arm tourniquet placed high on upper arm with webril underneath
  • for very small children may need to place head on armboard to allow for elbow to be in center of fluoroscopy
  • check AP/Lat radiographs prior to draping
Pearls
  • for open reductions a sterile tourniquet is generally preferred
G

Approach

1

Palpate and mark out medial and lateral epicondyles of elbow, location and course of ulnar nerve

2

Plan pin placement

  • if comminuted, severely displaced fracture need to prepare anterior approach to elbow through brachialis and brachioradialis proximally and brachioradialis and pronator teres distally
H

Fracture Reduction

P
P

1

Use the milking maneuver proximal to distal to free up soft tissue interposition

  • this step is generally only needed if proximal fragment has been driven into/through brachialis

2

Follow with gentle traction with elbow in slight flexion

Pitfalls
  • do not pull traction with arm in extension
  • (may stretch the neuromuscular bundle over the displaced fracture and put those structures at risk)

3

Perform coronal reduction first by applying varus/valgus and translation stress with arm in slight flexion

  • surgeon nondominant hand secures humeral shaft, dominant hand holds forearm
Pearls
  • make sure you are satisfied with fracture reduction in coronal plane before performing flexion maneuver
  • varus/valgus alignment is sometimes worsened by flexion maneuver but never improved

4

Address sagittal deformity

  • Reduction is a combination of hyper flexion of patients elbow, while surgeons thumb pushes distal fragment anteriorly
  • for posteromedial fragments pronate forearm, for posterolateral fragments supinate forearm to place intact periosteum under tension
  • for flexion injuries extend elbow to achieve reduction (consider placing pins into distal fragment before fracture reduction)
  • type IV fractures are unstable in flexion and extension- in those cases may need to adjust flexion/extension until appropriate alignment with capitellum is obtained
Pearls
  • for type 4 fracture, consider placing pins in distal fragment prior to reduction
  • for type 4 fracture, rotate C-arm to obtain lateral, as rotating the arm frequently causes loss of reduction

5

Confirm adequate reduction

  • anterior humeral line centered on capitellum
  • Baumann's angle restored
  • if the fingers cannot reach the shoulder, sagittal reduction is unlikely to be adequate
Pearls
  • in children <5yo ossification of the capitellum is not always in the center, so the anterior humeral line may be off center
I

Pinning

P

1

After fracture reduced, check on AP/Lat fluoro (rotate C-arm instead of arm if gross fracture instability)

  • smooth k-wires (0.062 or larger for most kids) placed from lateral condyle in superomedial direction x2
  • Pins with maximal spread at fracture site
  • first pin (more medial of 2 pins) enters through capitellum for bicortical fixation and goes from anterior to posterior for more fixation
  • Check first kwire placement, needs to be in humeral canal on lateral xray
  • diverge/spread wires so that there is capture of both medial and lateral columns
  • All pins need to be bicortical
Pearls
  • In general, need 2 K-wires for a type 2 SCH fx and 3 or more for a type 3 or 4

2

In unstable fractures place a 3rd or even 4th lateral pins

3

In rare cases in which fracture is unstable after lateral pins,

  • need to watch out for ulnar nerve if using medial kwire
  • making a small incision to visualize the nerve or moving the nerve posterior with the thumb may decrease the risk of injury
  • if crossed medial and lateral pins used they need to cross above fracture site for increased stability, not below or at fracture site
  • if placing a medial pin, first place lateral pins, then extend elbow so ulnar nerve moves posteriorly

4

Bend wires at least 1cm off skin to allow for swelling, then cut with 1-2cm exposed

  • protect skin from pins with felt, Xeroform or other
J

Confirm Hardware Position Recheck Clinical Exam

P

1

Check dynamic live exam with various/valgus stress on AP and flexion/extension on lateral

Pearls
  • Check that all pins are bicortical
  • Unicortical pins are a common source of failed fixation in CRPP of SCH
  • when pins are in olecranon fossa, elbow cannot fully extend - this is not a problem

2

save final ap, lateral and oblique images

3

Check carrying angle compared to contralateral side

4

Check forearm compartments and pulses

K

Wound Closure

P
P

1

Irrigation and Hemostasis

Pearls
  • authors prefer placing foam directly on the skin with a cast to allow for swelling

2

long-arm posterior splint or use uni- or bi-valved cast at approximately 75 degrees or less flexion to accommodate swelling

  • sling to prevent external rotation (especially important to use in small children)
Pitfalls
  • Too much flexion increases compartment pressure and decreases arterial flow.
  • Be sure there is a good pulse in the position of immobilization
Postoperative Patient Care
Private Note

Attach Treatment Poll
Treatment poll is required to gain more useful feedback from members.
Please enter Question Text
Please enter at least 2 unique options
Please enter at least 2 unique options
Please enter at least 2 unique options