Systemic Hypothermia as Treatment for an Acute Cervical Spinal Cord Injury in a Professional Football Player: 9-Year Follow-Up
Authors’ Disclosure Statement: The authors report no actual or potential conflict of interest in relation to this article.
The following report provides clinical follow-up on a National Football League player who sustained a complete cervical spinal cord injury (SCI) while tackling an opposing player in 2007. He received prompt medical and surgical care based on then-current recommendations, but was also treated with systemic hypothermia soon after his injury, which was controversial at the time. Since then, smaller randomized human studies have described the tolerable safety profile, efficacy, and potential benefits of this intervention in acute SCI in humans. Now, modest systemic hypothermia can be one of many tools considered in the treatment of acute SCI. Before it can become the standard of care, however, additional larger prospective randomized studies need to be completed. The patient described in this article had long-term excellent clinical results, with residual deficits of occasional tingling in fingertips and toe tips, although the patient continues to slowly improve.
- Importance of on-field management.
- Preseason drilling of spinal injury management.
- Early and rapid intervention.
- Possible benefit of moderate systemic hypothermia as treatment for acute cervical injury.
In 2010, we reported the case of a professional American football player who sustained a complete cervical spinal cord injury (SCI) while tackling an opposing player.1 He received prompt medical and surgical care based on then-current recommendations, but was also treated with systemic hypothermia soon after his injury. Although systemic hypothermia had been used in the management of other neurologic injuries at that time, it had not been used in humans with acute SCI, except as described in 2 case reports.2,3 However, Dietrich4 described early emerging animal data on the efficacy of systemic hypothermia for acute SCI. We now provide a clinical update on our patient, who provided written informed consent for print and electronic publication of this case report.
During a National Football League game, the player sustained a C3–C4 fracture-dislocation after a helmet-to-helmet hit on an opposing player. He fell face down on the ground and did not move. The team’s physician and trainer rushed to the player’s side, immediately assessed him, and initiated the emergency spinal resuscitation protocol.
As per protocol, the assigned team leader took charge of managing the player’s head to maintain in-line traction with the helmet in place until the head was secured in place on a backboard designed to accommodate the helmet.
Complete motor paralysis and sensory loss (American Spinal Injury Association [ASIA] level A) were noted below the clavicles during physical examination by the head athletic trainer and 2 independent physicians, and by self-report.
On arrival at the hospital, the patient had a core temperature of 98°F, which is substantially lower than the average core temperature (≤101.7°F) of an active football player.6He had a normal level of consciousness and normal cranial nerve function but remained without any voluntary motor function in the extremities and still had no sensation below the clavicles, except crude pressure sensation in one hand while in the emergency department. After the helmet and shoulder pads were removed, per National Athletic Trainers’ Association (NATA) protocol7 (Figure 2), he was stabilized, and a hard cervical collar was placed. A lateral radiograph (Figure 4) showed a C3–C4 facet dislocation with about 46% anterior translation of C3 on C4 and obvious disruption of the facets.
About 3 hours after injury, the patient was taken to the operating room. Although closed reduction improved alignment dramatically, it failed to completely reduce the dislocated left C3–C4 facet. An hour later, anterior C3–C4 discectomy was performed from the front with instrumented anterior interbody fusion. This was immediately followed by posterior decompressive laminectomy, bilateral facet reduction, and fusion with instrumentation. Surgery was completed within about 4 hours, almost exactly 7 hours after injury. Anesthesia records indicated a core temperature range of 94.1°F to 95.3°F with passive cooling during surgery. CT and MRI performed within 4 hours after surgery showed excellent cord decompression.
The next morning, about 14.5 hours after injury, the patient demonstrated a flicker of the adductor muscles of the lower extremities. An examination an hour later revealed 1/5 quadriceps, 2/5 adductors, and 1/5 gastrocnemius/soleus. A nurse’s hourly examinations and the surgeon’s repeat examinations revealed no other motor function. Sensory function was more difficult to evaluate because of sedation, but rudimentary sensation was noted throughout the lower extremities, and proprioception and vibratory sensation were noted as well. With passive cooling, it was difficult to consistently maintain moderate hypothermia; the patient’s core temperature ranged from 94.8°F to 98.8°F by 6:00 a.m. Therefore, the decision was made to place a Cordis sheath in the left femoral vein and introduce an intra-vena cava cooling catheter through it. This catheter was highly effective in maintaining the patient’s temperature at about 92.5°F.
Over the next 36 hours, the patient demonstrated increased motor activity in the upper and lower extremities: 1/5 biceps, 2-3/5 triceps, 3/5 quadriceps. He was slowly rewarmed and, on postoperative day 3, extubated.
At 2 years, the patient underwent another anterior-only cervical procedure: The inferior adjacent segment (C4–C5) was fused because of neck pain and deformity.
With respect to the original injury and the evolution in cord appearance, the patient had solid arthrodesis from C3–C5 with instrumentation in good position. There was evidence of loss of lordosis at C5–C6 with disk dessication and broad-based bulging. The spinal cord had evidence of myelomalacia; this was noted when the patient was in rehabilitation, 1 month after injury. The 2-cm × 11-mm area of myelomalacia was directly posterior to the fused C3–C4 interval (original MRI, Figure 5; 2-week MRI, Figure 6).
At the time this player was injured, use of systemic hypothermia with standard therapy for acute SCI was unique and controversial. Since then, smaller randomized human studies have described the tolerable safety profile, efficacy, and potential benefits of this intervention in acute SCI in humans.8-10 Now, modest systemic hypothermia can be one of many tools considered in the treatment of acute SCI. Before it can become the standard of care, however, additional larger prospective randomized studies need to be completed.
Am J Orthop. 2017;46(2):E79-E82. Copyright Frontline Medical Communications Inc. 2017. All rights reserved.