"Anorgasmia (often related to delayed ejaculation in males) is a form of sexual dysfunction sometimes classified as a psychiatric disorder in which the patient cannot achieve orgasm, even with "adequate" stimulation. However, it can also be caused by medical problems such as diabetic neuropathy, multiple sclerosis, pelvic trauma, hormonal imbalances, total hysterectomy, spinal cord injury and cardiovascular disease."
"Primary anorgasmia is a condition where one has never experienced an orgasm. This is significantly more common in women, although it can occur in men who lack the gladipudendal (bulbocavernosus) reflex."
Most men have learned to live with this, and have sex to please the woman rather than themselves. Some men take Viagra and have sex with their women for an hour or so, and masturbate the next day.
Is he still able to orgasm through masturbation easily?
-- This was all researched from different articles to try and aid you. I'm not a doc in the field.

--