Jose Torres suffered a severe injury to his right index finger in a bandsaw accident, with plastic surgeon Dr. Leo Lapuerta describing the tip as 'hanging by a thread.' When Lapuerta recommended amputation, Torres refused and underwent salvage procedures including skin flap surgery. After Torres later developed osteomyelitis bone infection, another surgeon performed a 'ray amputation' removing the entire index finger and metacarpal bone. Torres sued Lapuerta for $2.8 million, claiming negligent treatment caused the infection that necessitated the more extensive amputation.

After an 11-1 jury verdict favoring Lapuerta, the trial court granted Torres's motion for a new trial based on seven grounds, primarily claiming the jury charge's loss-of-chance instruction was legally improper. As Chief Justice Blacklock explained, the court 'misperceived the law governing liability for medical negligence' and erroneously concluded that 'Texas law does not recognize the lost chance of survival as a valid principle of liability.' The Supreme Court found this reasoning 'predicated on legal error' requiring mandamus relief to 'restore the jury's verdict and avoid wastefully duplicative proceedings.'

The Court delivered its harshest criticism for Torres's attachment of a letter from the lone dissenting juror that purported to reveal jury deliberations. 'Attaching the letter from the dissenting juror to Torres's new trial motion squarely violated these basic rules shielding the contents of jury deliberations from judicial consideration,' Blacklock wrote. The Court warned that such evidence 'purposefully undermines the secrecy that is foundational to the jury system' and 'may introduce error into the proceedings so fundamental that the party using the evidence must forfeit the relief it requests.'

The case reached the Supreme Court after the Harris County trial court initially granted a new trial without explanation, then provided seven reasons in an amended order following Lapuerta's first mandamus petition to the Houston First Court of Appeals. The intermediate court dismissed the first petition as moot, then denied relief on Lapuerta's second petition without analysis, prompting his petition to the state's highest court.

The trial court's primary justification was that Texas had rejected the loss-of-chance doctrine, but the Supreme Court clarified that while Kramer v. Lewisville Memorial Hospital rejected a separate cause of action for loss of chance, it 'recognized and reinforced the doctrine's continuing validity as a rule of liability in medical negligence cases.' Blacklock emphasized that the principle applies equally to finger injuries and death cases: 'the principle is applicable to the loss of chance of survival of a finger just as it is to the loss of chance of survival of a person.'

Torres argued the jury instruction caused confusion about whether it applied to the whole finger versus a partial finger, pointing to the jury's mid-deliberation question: 'Does the charge relate to the whole finger or partial finger?' However, the Court found this insufficient grounds for a new trial, noting that Torres's counsel at the time responded that the charge applied to 'the whole finger' and never requested clarification distinguishing between whole and partial amputation. The Court concluded that even assuming an ideal instruction would have made this distinction, the evidentiary record did not support finding the jury 'probably would have answered differently.'

The Supreme Court emphasized that Torres received 'a fair trial, not a perfect trial,' noting that five of six medical experts testified that partial amputation was never viable and that Torres himself 'was totally absolutely against any amputation of any body part.' The Court warned that allowing new trials based on such grounds would undermine the constitutional importance of jury verdicts, stating that 'disregarding a jury's verdict is an unusually serious act that imperils a constitutional value of immense importance—the authority of a jury.'