161 (Tex.Civ.App.-Beaumont 1973, writ ref’d n. r. e.); Levermann v. Cartall, 393 S.W.2d 931 (Tex.Civ.App.-San Antonio 1965, writ ref’d n. r. e.). The only requirement to be observed is that the trial court must give definitions of legal and other technical terms. “Anything else, however interesting, or, indeed, however relevant to the case in general—which does not aid the jury in answering the issues must be excluded.” G. Hodges, Special Issue Submission in Texas § 8 at 25 (1959). (Emphasis supplied.)
Here the Court inquired if plaintiff sustained injuries as alleged, whether defendant failed to provide plaintiff with a reasonably safe place to work (with definition of this term), whether this failure was a producing cause of the alleged injuries, whether the deck where plaintiff slipped was reasonably fit for its intended use; followed by issues of contributory negligence. So, there was no need for the Court to submit these requested instructions, since none of them could aid the jury in answering the issues. This point is overruled.
Defendant’s next point is “[t]he District Court Erred in Not Granting Judgment N.O.V. or a New Trial for Plaintiff’s Failure to Prove Liability or Causal Connection Between the Incidents of February 3 and February 7, 1971, and his Present Medical Complaints.”
Plaintiff, a fifty-three year old Third Officer, had been in the Merchant Marines since World War II. He had no previous injuries. He testified that on February 4, 1971, he slipped on an iced deck that should have been sanded, causing leg numbness. Three days later he slipped again on an oily or greasy grating. This accident was witnessed. It was the responsibility of the chief mate and boatswain to hose down this area and keep it clean. Plaintiff experienced pain and numbness after these accidents. In June 1973 his back was operated on for the first time. In March 1974 it was reoperated on. Thereafter, he tried a ten-. day trip, but he had to leave the ship because, “It about eat me up.” That was his only work between the second operation and the trial in 1975.
Just prior to the trial, a procedure was performed on his back (rhizolysis) to deaden some nerves and relieve the pain. A neurosurgeon expressed the opinion plaintiff could not perform the functions of a seaman, and that nerve root adhesions will become worse in the future, and he attributed his symptoms and complaints to the trauma of his accident.
We believe this summarized evidence factually supports the jury’s finding of causation, and we overrule this point of error.
Defendant’s next point complains of testimony as to the cost of purchasing an annuity. The witness Kelly, a life insurance underwriter, gave testimony of the cost of an annuity of $20,000 per year, assuming the purchaser to be fifty-one years old with a life expectancy of 28.7 years. This testimony presents no error. Texas & New Orleans Railroad Company v. Jacks, 306 S.W.2d 790, 796 (Tex.Civ.App.-Beaumont 1957, writ ref’d n. r. e.). See also Louisiana & Arkansas Railway Company v. Mullins, 326 S.W.2d 263 (Tex.Civ.App.-Texarkana 1959, writ ref’d n. r. e.) [cert. denied, 361 U.S. 966, 80 S.Ct. 596, 4 L.Ed.2d 546 (1960)].
Defendant has a point that complains of the jury’s finding of $20,000 for future medical expenses as being supported by no evidence or insufficient evidence.
One of the physicians who operated on plaintiff testified his cost of medical treatment for the last few months would reflect his future requirements. Plaintiff’s medical bills from February 1974 until the time of the physician’s testimony was over