Microdiscectomy

A small percentage of patients re-herniate at the same level. The risk is discussed plainly before surgery, along with how activity precautions in the first 6 weeks support healing.

Microdiscectomy treats one problem precisely: lumbar radiculopathy (sciatica) — leg pain, numbness, or weakness caused when herniated disc material presses on a lumbar nerve root. Removing that fragment gives the nerve room and removes a source of chemical irritation. It is not an operation for back pain by itself, for disc wear without nerve compression, or for narrowing that a fragment removal cannot address. That boundary matters. Patients whose pain is leg-dominant and matches a single compressed root are the ones this operation was designed for; a different pain pattern calls for a different conversation.

A herniated disc is diagnosed on MRI. The process begins with your history and examination — where the pain travels, which movements provoke it, and whether strength, reflexes, and sensation align with one particular nerve. When those findings raise suspicion for a herniation, they prompt the MRI order. The scan confirms whether disc material is truly compressing the suspected root, at which level, and how severely. Only then does planning follow, because the confirmed anatomy shapes whether continued conservative care is sensible or whether the disc and nerve match closely enough to discuss surgery.

Consider it when leg pain remains disabling after a fair course of conservative care — usually several weeks of activity modification, therapy, and time — and the MRI-confirmed herniation matches your symptoms. The outcome data: in the randomized trial of surgery for sciatica lasting four to twelve months, the leg-pain intensity score at six months was 2.8 in the surgical group versus 5.2 in the nonsurgical group (Bailey et al., N Engl J Med 2020). In SPORT’s four-year as-treated analysis, the treatment effect on the Oswestry Disability Index was −13.2 points favoring surgery (Weinstein et al., Spine 2008) — while the intention-to-treat analysis found both groups improved substantially, with small, non-statistically-significant between-group differences (Weinstein et al., JAMA 2006). Complications in the trial cohorts were uncommon: incidental durotomy in 3.1% of first-time discectomies (Desai et al., J Neurosurg Spine 2011), and in the Peul trial’s two-year report, complications in 1.6% of surgical patients, with 6% of surgically treated patients undergoing a second operation for recurrent sciatica (Peul et al., BMJ 2008). Progressive weakness changes the timetable: a foot that is losing strength should not simply be watched. Certain findings bypass waiting altogether. Numbness in the saddle region, a change in bladder or bowel control, or weakness advancing rapidly can signal cauda equina compression and need urgent evaluation. Short of those flags, the decision is elective and deliberate, weighed against how much the pain is limiting your life.

The risks are uncommon but real, and they are discussed plainly before any operation. A tear in the dura — the membrane enclosing the nerve roots — can leak spinal fluid and occasionally needs repair or added rest. Nerve injury, bleeding, and infection are possible, as with any surgery near the spine. Relief is not guaranteed: pain can persist if the nerve was irritated for a long time before surgery. The disc can also herniate again at the same spot. In a prospective study of lumbar discectomy outcomes, reherniation occurs after 5% to 15% of such procedures. (Carragee EJ, Han MY, Suen PW, Kim D. Clinical outcomes after lumbar discectomy for sciatica: the effects of fragment type and anular competence. J Bone Joint Surg Am. 2003;85(1):102-108.)

Two kinds of discomfort follow this operation, and they behave differently. Soreness at the incision and in the surrounding back muscles is expected for days to a couple of weeks. The shooting leg pain, by contrast, often eases early — sometimes promptly — while numbness or weakness that built up over months tends to recover on a slower schedule, if it recovers fully. For the incisional soreness, whether ice or heat feels better is a matter of personal preference; either is acceptable, and many patients alternate. Escalating pain after initial improvement is worth a phone call.

The alternative, for many patients, is time — and it is a legitimate one. A large share of herniations shrink on their own as inflammation quiets and the body reabsorbs displaced material, which is why surgery is seldom urgent without weakness or red flags. Structured therapy, sensible activity changes, and walking support that process. Medication decisions belong with your pharmacist or primary care doctor. Injections are performed by interventional pain specialists; if one is part of the plan, you may be referred as part of a comprehensive care plan. Surgery is reserved for pain or weakness that outlasts that course.