Background: Anterior cervical discectomy and fusion (ACDF) is a widely used surgical approach for cervical degenerative disc disease (DDD). Dynamic stabilization offers an alternative aimed at preserving motion and reducing complications. Objective: This study aims to compare the long-term clinical and biomechanical outcomes of ACDF with dynamic stabilization versus traditional fusion techniques in patients with cervical DDD. Method: A prospective study was conducted on 212 patients at the Department of Orthopaedic Surgery, North East Medical College, Sylhet, from January 2022 to December 2023. Patients were divided into two groups: ACDF with dynamic stabilization (n=108) and traditional fusion (n=104). Clinical outcomes, including pain (VAS), functional improvement (NDI), cervical range of motion (ROM), and incidence of adjacent segment disease (ASD), were evaluated at 3, 6, 12, and 24 months postoperatively. Data were analyzed using paired t-tests and multivariate regression models. Results: Patients undergoing dynamic stabilization reported greater cervical ROM (58.3% increase compared to preoperative levels) versus the traditional fusion group (32.5%). Dynamic stabilization was associated with a 24% lower ASD incidence (8.3% vs. 32.5%) and a 36% improvement in patient-reported outcomes (NDI scores improved by 47.2% vs. 34.7%, p<0.05). Pain scores (VAS) showed comparable reductions in both groups (>70% improvement). Revision surgeries were required in 4.6% (dynamic) versus 12.5% (fusion) cases, showing a 63% reduction. Conclusions: Dynamic stabilization demonstrated superior outcomes in preserving motion, reducing ASD, and improving functional scores while maintaining comparable pain relief to traditional fusion techniques.