good episode
I don't really need to explain the plot of this episode. That has already been done quite well by other reviewers. What I will tell you is my opinion on the episode.

It is really good overall. The only thing I don't care for from Star Trek TNG is how they handle most disability issues.... Most of the time the characters that develop disabilities view them as a fate worse than death (including this one)... and equally as often (including this episode) their disability is miraculously cured by the end of the show. I know that the show is based in a time frame several hundred years from now when medicine is supposedly much more advanced, but still, it gets annoying. I think the series missed out on some important messages by doing this.

Even so, the dicussions between Riker and Worf are great during this episode. (They discuss contradictory cultural and individual belief systems on life, death, what is important in life, and the "right to die").

In the end though, it is all neatly tied up and everything they talked about was for nothing as Worf is cured.

Incidentally, the only disability related episode that I remember that doesn't end with a cure is one in which a NON-Enterprise crewmember is the one who develops the disability. What does this say about the strength of the crew?

I generally LOVE the way in which TNG handles most social issues. Disability is one that could have been handled better though.

Worf has to choose between experimental surgery and suicide
In "Ethics" Worf is injured by a failing container that leaves the Security Chief paralyzed from the waist down. Worf's only hope is a radical medical treatment urged by Toby Russell, a neural specialist who has come to help Dr. Crusher with the injury. Russell wants to create a new spinal cord for Worf, but Crusher wants to try conventional therapy when she learns the new procedure has never been used on a humanoid. Worf would never survive if the experimental treatment failed. Worf rejects Crusher's suggestion since it can only restore partial mobility and asks Riker to help him commit suicide in accordance with Klingon traditions. Of course Russell goes behind Crusher's back to offer the experimental surgery to Worf, giving the injured Klingon another option besides suicide.

Certainly "Ethics" is a rather melodramatic episode, which tries to take full advantage of its title. The ethics of experimental surgery is old hat (have you ever seen an episode of a television show where they did NOT try the experimental surgery in the end?), but Riker's deliberation over Worf's request is the centerpiece of the show. It reminds me of the moment at the end of "The Best of Both World's" cliffhanger where Riker ordered the Enterprise to open fire on the Borg cube with Locutus/Picard. It is totally believable that Riker could honor Worf's request. Those scenes redeem "Ethics" enough to make it an average episode in the series. There are also some implications for the characters down the line when Worf asks a stunned Counselor Troi to care for Alexander in the event that he should die.

Insightful
This episode contains an excellent debate on medical ethics. Worf is in a situation where conventional treatment will not help him make a full recovery (necessary for Klingon honor) but a new, experimental treatment is likely to kill him. Though of course Worf makes a full recovery in the end, the argument is not really resolved. The nature of the debate does not lend itself to easy solutions, but it does bring up many interesting points to ponder.

Star Trek: The Next Generation "Ethics"
Worf is severely injured following an accident, and loses the ability to walk. Dr. Crusher tells him his condition may be permanent, and suggests treatments that could could restore much, but not all, of his mobility. However, Worf is not pleased at that, and considers his own remedy for his disability, until a doctor comes aboard the Enterprise hoping to try out an experimental but risky medical procedure that could restore virtually all his mobility. After conferring with his son about his situation, Worf decides to undergo the procedure, but will he come out of it alive? I like this episode because it's a story about Klingon rituals and what Klingons traditionally do when they're paralyzed.