Figure 11.1
Soft-tissue appearance at the time of presentation to the emergency department
Radiographs
X-rays of his foot, ankle, as well as full-length tibia and fibula images (joint above and below) were obtained and showed a displaced calcaneal tuberosity tongue-type fracture. A CT scan was obtained to better delineate the injury and evaluate for any intra-articular extension into the posterior facet (Fig. 11.2).
Figure 11.2
Plain radiographs and CT injury imaging
Treatment and Timing of Surgery
This calcaneus fracture is a tongue-type injury and associated with significant soft-tissue compromise. The pressure of the displaced fragment compromising blood flow to the overlying soft tissues is reflected by the ecchymosis and skin blanching present at the time of presentation. This skin compromise requires urgent reduction and stabilization of the displaced bony fragment in the operating room to try and avoid a full-thickness soft-tissue loss. Due to this soft-tissue injury, we immediately began getting him ready to go to the operating room urgently.
In the ED, the patient was placed in a bulky Jones splint with his ankle in equinus to relax the deforming force of the Achilles tendon on the displaced fragment in the ED. This position may partly reduce the fracture and take some pressure off the soft tissues until the patient can go to the operating room. Patients with this type of fracture are typically admitted to the hospital for close monitoring of their skin envelope and brought rapidly to the operating room.
Surgical Plan
Overall Plan/Goal
Fracture reduction is the key for this case and we planned on using an escalating approach to obtain an appropriate reduction. Ideally this could be done percutaneously, but, if that were not possible we would escalate to a mini-open approach followed by a more extensile approach if needed. The key is to what is to what is necessary to take the pressure off the soft tissues while trying to protect the blood supply of the fracture fragments. In this case we were able to use small percutaneous incisions for reduction, clamp placement, and fixation.
Positioning in the Operating Room
The patient was placed in the prone position on a radiolucent foot extension so C-arm imaging cold be used intraoperatively, and both sides of the calcaneus are accessible. The patient’s foot was positioned at the end of the table to help facilitate access to the foot and for proper imaging. Either blankets or “bone foam” can be used to elevate the injured extremity above the other to facilitate obtaining a lateral image. This setup facilitates access to the posterior aspect of the patient’s foot for reduction and fixation of the fracture. Alternatively, the lateral position could be used, but makes access to the medial side of the foot difficult if needed during the procedure.
Fracture Reduction
We began by unroofing and debriding the skin blisters. Fluoroscopy was then used to help plan our incisions by localizing and marking the positions of the fracture line and both fragments. The foot plantar-flexed to see how much that maneuver reduced the displaced tuberosity fragment. Once the fragments were closer together we used a combination of palpation and fluoroscopy to determine the positions of the superior and inferior aspects of the calcaneal tuberosity. The tines of a large Weber clamp were placed where we thought they would clamp the fragments together and their positions checked using a lateral fluoroscopic image prior to making stab incisions. Four 1-cm stab incisions were then made so we could place the tines of two large Weber clamps on the medial and lateral sides of the calcaneus to reduce and compress the fracture fragments. The clamps were positioned so they did not place any pressure on the already compromised soft tissues. The first time we clamped the fracture together we caused skin puckering on the medial side where soft tissue was trapped within the fracture site. After unclamping we made a small incision over this area and used an elevator to sweep the soft tissues out the fracture site. We were then able to re-clamp the fracture site without any soft tissues being trapped within the fracture site. We then obtained lateral and Harris heel views to check our reduction. 1.6 mm K-wires were then placed to help hold the reduction.