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Determining the ideal CSM surgical approach BMI correlation is crucial for spine surgeons who aim to optimize long-term patient-reported outcomes (PROs). Cervical spondylotic myelopathy (CSM) remains a global leading cause of spinal cord dysfunction. While both anterior and posterior surgical strategies effectively manage symptoms, the rising prevalence of obesity introduces complex variables. Recently, a 5-year analysis of the Quality Outcomes Database (QOD) investigated whether BMI should dictate the choice between these two approaches.
The study evaluated data from 1085 patients, with 70% undergoing anterior surgery and 30% receiving posterior interventions. Specifically, researchers focused on the achievement of the minimal clinically important difference (MCID) in various PROs. Initially, anterior approaches showed clear benefits in perioperative metrics. For example, patients in the anterior group experienced shorter hospital stays and higher rates of home discharge compared to those in the posterior group. Furthermore, across the entire 60-month follow-up, anterior surgery resulted in significantly greater improvements in neck pain and disability scores.
When researchers stratified patients by a BMI threshold of 30 kg/m², they observed interesting patterns. In contrast to some expectations, the surgical approach did not significantly influence the likelihood of achieving MCID for most outcomes within the obese cohort. However, non-obese patients undergoing anterior surgery achieved MCID for neck pain significantly more often than their posterior surgery counterparts. Additionally, the study utilized a continuous BMI spectrum analysis. Consequently, the results suggested that neither approach was definitively superior based solely on weight for reaching the highest probability of optimal neurological recovery.
Therefore, while BMI influences perioperative challenges, it does not appear to be a restrictive factor for selecting a specific approach for neurological improvement. Instead, surgeons should prioritize the patient\'s specific anatomy and pathology. Nevertheless, the favorable outcomes for neck pain in non-obese patients suggest that an anterior approach may be preferable when BMI is low and neck pain is a primary complaint. In addition, clinicians must consider that these findings highlight the overall efficacy of both techniques across varied populations.
Ultimately, this 5-year analysis confirms that both anterior and posterior surgeries are viable for patients across different weight categories. While anterior surgery offers perioperative advantages and better neck pain resolution in non-obese patients, BMI alone does not strictly dictate the probability of long-term success. As a result, clinicians should integrate these findings into their decision-making process to personalize surgical care for CSM patients.
Yes, higher BMI is often associated with longer operative times and potential perioperative challenges. However, this study suggests that long-term neurological recovery and patient-reported improvements remain comparable across different BMI strata regardless of the surgical approach.
Evidence indicates that non-obese patients (BMI < 30 kg/m²) achieve significantly better neck pain relief and disability improvement when undergoing an anterior approach compared to a posterior approach.
Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice or establish a doctor-patient relationship. Refer to the latest local and national guidelines for clinical practice.
References
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