Gartland III Supracondylar Fracture With a Pulseless Pink Hand
A 6-year-old boy is brought to the emergency department after falling from monkey bars. He holds his right elbow flexed and refuses to move it. There is marked swelling and deformity, with a palpable gap anteriorly and the distal humerus prominent. The radial pulse is absent, but the hand is pink with capillary refill of 2 seconds; he cries when the fingers are pricked and localizes to the stimulus. He has no other injuries, is otherwise well, and has been fasting for 4 hours. Radiographs show a Gartland III extension-type supracondylar fracture with posterolateral displacement. There is no open wound and no bruising in the antecubital fossa. The nearest pediatric orthopaedic surgeon is 45 minutes away; a general orthopaedic consultant is in-house. The parents ask whether the arm will survive.
1. What is your immediate plan, and how urgent is this?
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This is a pulseless pink hand - the limb is perfused through collateral circulation, but the brachial artery is injured, tethered, or in spasm. It is urgent, though not a 'first-hour' emergency in the same sense as a white, cool hand, and it should not wait until morning.
Immediate steps: analgesia, splint in the position of comfort, do not attempt repeated forceful reductions in the emergency department, keep the patient fasting, group and save, and take him to the operating room for closed reduction and percutaneous pinning. Do not order CT or MR angiography before reduction - reduction itself frequently restores the pulse by relieving the artery from the fracture edge. The in-house general orthopaedic consultant can perform closed reduction and pinning; transfer to the pediatric center should not delay reduction if transfer would take longer than a few hours and the surgeon is competent. Notify the pediatric center either way.
After reduction, recheck the pulse and perfusion. The critical decision is not 'is there a pulse?' but 'is the hand perfused?' A pink, warm hand with a Doppler signal in the palm can safely be observed.
2. The pulse does not return after reduction, but the hand remains pink and warm. What now?
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This is the classic pulseless pink hand after reduction. The evidence and practice is to observe rather than explore, provided perfusion is maintained. The brachial artery may be in spasm, kinked but not occluded, or occluded with adequate collateral flow; exploration in this setting often finds a vessel that is not reconstructable and can worsen the outcome.
Management: a well-molded splint with the elbow at 30–40° of flexion, never hyperflexed, hourly nursing observations of color, warmth, capillary refill, and Doppler signal for at least 24 hours, and adequate analgesia. Document a baseline and ensure the observations are actually being done and recorded.
Escalate to exploration if there is any deterioration: a white or cool hand, an absent Doppler signal in the palm, increasing pain, or a tense forearm. Consider CT angiography if the hand remains perfused but you are concerned about a proximal injury or a pulsatile mass. Document nerve function at each check - the median nerve, particularly the anterior interosseous branch, is the most commonly injured, and a new motor deficit changes the threshold for intervention.
3. The hand becomes white and cool 30 minutes after reduction. What is your management?
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This is now a vascular emergency. A white, cool hand indicates inadequate perfusion, not merely an absent pulse. The priorities are: check the splint and remove any constriction, since a flexed elbow or tight bandage can occlude flow; return to the operating room immediately for exploration of the brachial artery with vascular surgery available; and perform intraoperative angiography or on-table Doppler if the vessel is not obviously injured.
At exploration, the brachial artery is commonly entrapped or lacerated by the proximal fragment. Options include direct repair, vein patch, or interposition graft; ligation is acceptable only if collaterals are proven adequate, which is rarely the case in a child. Release the lacertus fibrosus and any fascial constriction. Consider fasciotomy if there is a tense compartment or ischemia lasting more than about 4 hours. After revascularization, monitor closely for compartment syndrome, which can occur on reperfusion.
Anticoagulation after repair in children is controversial; discuss with vascular surgery. Document the findings and the plan for vascular and orthopaedic follow-up, and counsel the parents that the arm is likely salvageable but that nerve recovery may take months to assess.