Patellar tendon tears, ranging from partial ruptures to complete tendon ruptures, are significant knee injuries that can substantially impair lower limb function. These injuries are typically associated with high-impact sports, activities involving sudden acceleration or deceleration, or direct trauma to the knee. The patellar tendon, which connects the patella (kneecap) to the tibia, plays a critical role in the extensor mechanism of the knee, enabling actions such as walking, running, and jumping. A rupture of this tendon can lead to pain, weakness, and a loss of knee stability, severely limiting mobility. Recent advances in the understanding of patellar tendon tears have highlighted the importance of early diagnosis, effective surgical techniques, and comprehensive rehabilitation strategies. Magnetic resonance imaging (MRI) remains the gold standard for diagnosis, providing detailed insights into the extent of the tear and the involvement of surrounding structures. Partial tears may be managed conservatively with rest, bracing, and physical therapy, but complete ruptures generally require surgical intervention to restore the function of the knee. Surgical techniques have evolved to include both traditional open repair and minimally invasive arthroscopic methods, with the goal of reattaching the tendon to the tibial tuberosity or patella while preserving tissue integrity. Rehabilitation post-surgery is critical to the restoration of strength, flexibility, and overall knee function. Recent evidence suggests that early motion and progressive loading can accelerate recovery, but careful monitoring of tendon healing is essential to prevent re-injury. In conclusion, patellar tendon tears continue to present challenges in both diagnosis and management. While surgical techniques and rehabilitation strategies have improved outcomes, optimal treatment requires an individualized approach, factoring in the patient’s activity level, tear severity, location, and time to intervention.