Erik Menendez needed surgery due to complications from kidney stones that required his hospitalization weeks before a high-stakes parole hearing with his brother that could lead to freedom after decades in prison.

Menendez's wife and stepdaughter are sharing details about his "serious" medical condition ahead of his scheduled parole board hearing in August.

Lyle, left, and Erik Galen Menendez sit in Beverly Hills, Calif., courtroom, May 14, 1990 as a judge postponed their preliminary hearing on charges of murdering their parents last August.

Lyle, left, and Erik Galen Menendez sit in Beverly Hills, Calif., courtroom, May 14, 1990 as a judge postponed their preliminary hearing on charges of murdering their parents last August.

FILE – Lyle, left, and Erik Galen Menendez sit in Beverly Hills, Calif., courtroom, May 14, 1990. (AP Photo/Kevork Djansezian, File) Attorneys on both sides of the issue will have a chance to ...

Lyle, left, and Erik Galen Menendez sit in Beverly Hills, Calif., courtroom, May 14, 1990 as a judge postponed their preliminary hearing on charges of murdering their parents last August.

FILE – Lyle, left, and Erik Galen Menendez sit in Beverly Hills, Calif., courtroom, May 14, 1990 as a judge postponed their preliminary hearing on charges of murdering their parents last August.