On April 28, 1993, during a Greek League playoff game, his team Panionios faced Panathinaikos in a tense battle. With only minutes left, Janković scored a layup but was immediately called for an offensive foul—his fifth of the game, which meant he had fouled out. In a moment of uncontrolled frustration, he turned and struck his head against the unpadded concrete support of the basket structure.

The impact caused catastrophic spinal injuries. He was rushed to KAT Hospital in Athens, where doctors diagnosed severe cervical vertebra damage leading to permanent paralysis. After surgery, coma, and months of treatment abroad, he never regained movement.

His accident shocked the basketball world. The governing body FIBA responded by mandating safety padding on all basket stanchions worldwide, a rule that still protects players today. Panionios also retired his jersey in honor of his impact and legacy.

Despite his condition, Janković remained connected to the sport. His presence at games, often in a wheelchair, became a powerful reminder of both passion and consequence. His story later continued through his son, who pursued professional basketball, keeping the family’s link to the game alive.

Janković’s life is remembered not only for its tragedy, but for how it permanently changed player safety in basketball.