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Diskectomy is a surgical procedure that is performed to remove the herniated or damaged portion of the intervertebral disk to alleviate pressure and relieve symptoms on the spinal nerve roots associated with lumbar disk herniation. This surgical intervention is commonly performed to alleviate pain, weakness, numbness, and other neurological symptoms caused by compression of spinal nerve roots. Diskectomy involves accessing the affected disk through a small incision in the back and carefully removing the extruded disk material, thereby relieving pressure on the adjacent nerve structures. This surgical procedure can significantly enhance a patient's quality of life and functional outcomes, boasting high success rates in appropriately selected cases. Initial management usually involves conservative treatments, with surgery reserved for cases unresponsive to these measures. This activity encompasses essential topics such as patient selection criteria, preoperative evaluation, surgical approaches, intraoperative considerations, postoperative care protocols, and potential complications associated with diskectomy. This activity allows clinicians to gain comprehensive knowledge and skills related to the diagnosis, management, and surgical techniques involved in diskectomy procedures. In addition, this activity facilitates clinicians' understanding of the anatomical, pathophysiological, and biomechanical principles underlying lumbar disk herniation and diskectomy procedures. This understanding empowers clinicians to improve patient care and outcomes and satisfaction while expanding their expertise in spine surgery. Objectives: Identify appropriate patients for diskectomy based on clinical presentation, medical history, diagnostic imaging findings, and response to conservative management. Assess the effectiveness of conservative treatments prior to considering diskectomy, including medication management, physical therapy, and spinal injections. Apply evidence-based guidelines and best practices in the perioperative management of patients undergoing diskectomy to minimize complications and optimize surgical outcomes and patient safety. Collaborate with interdisciplinary healthcare teams to optimize patient care throughout the surgical process and until their functional recovery. Access free multiple choice questions on this topic.

Diskectomy is a surgical procedure performed to remove the herniated or damaged portion of the intervertebral disk to alleviate pressure and symptoms on the spinal nerve roots associated with lumbar disk herniation. This surgical intervention, commonly used in cases of spinal disk herniation, addresses the protrusion of the disk's inner core (nucleus pulposus) through a tear or weakness in its outer layer (annulus fibrosus), which can cause symptoms such as pain, numbness, weakness, or other neurological symptoms resulting from compression of spinal nerve roots. Lumbar disk herniation represents a prevalent and early manifestation of lumbar spine degeneration, with reported incidences ranging from 2% to 3% and a prevalence of approximately 12%.[1][2] Among individuals aged 35 or older, the prevalence is 4.8% in men and 2.5% in women.[2] Lumbar disk herniation typically occurs at the L4-L5 and L5-S1 levels, often requiring surgical intervention and accounting for a significant portion of spinal surgeries.[3][4][5] Initially, management approaches typically involve conservative treatments, including oral medications, rest, and physical therapy, with surgical interventions reserved for cases unresponsive to conservative measures. Physical therapists are critical in administering the gold-standard first-line treatment. Their profound understanding of human mechanics and therapeutic modalities enables the successful treatment of many disk herniations without surgery.[6] The historical evolution of diskectomy techniques highlights significant milestones in spinal surgery. Diskectomy involves accessing the affected disk through a small incision in the back and carefully removing the extruded disk material, thereby relieving pressure on the adjacent nerve structures. While the core principle of diskectomy surgery, aimed at alleviating nerve impingement, remains constant, newer surgical strategies prioritize minimizing trauma to the multifidus muscle and enhancing surgical visualization. This emphasis on reduced tissue disruption and improved visualization underscores advancements aimed at optimizing patient outcomes and minimizing postoperative complications.[4]

The historical evolution of diskectomy techniques highlights significant milestones in spinal surgery. Diskectomy involves accessing the affected disk through a small incision in the back and carefully removing the extruded disk material, thereby relieving pressure on the adjacent nerve structures. While the core principle of diskectomy surgery, aimed at alleviating nerve impingement, remains constant, newer surgical strategies prioritize minimizing trauma to the multifidus muscle and enhancing surgical visualization. This emphasis on reduced tissue disruption and improved visualization underscores advancements aimed at optimizing patient outcomes and minimizing postoperative complications.[4] Beginning with Mixter and Barr's description of laminectomy via the L3 to sacrum approach for lumbar disk herniation in 1934, subsequent innovations have revolutionized surgical approaches. In the 1970s, hemi-laminectomy emerged, followed by Caspar and Williams' introduction of microdiskectomy using a 3-cm incision in 1977.[7] Wiltse and Spencer delineated the paraspinal approach for managing extraforaminal disks in 1988, coinciding with Kambin and Sampson's pioneering fully endoscopic approach.[7] In 1993, Mayer and Brock introduced tubular retractors. Foley and Smith revolutionized the field with the microendoscopic diskectomy technique in 1997, using a video-assisted approach through a 2-cm incision, significantly minimizing tissue disruption.[7][8] Various surgical strategies are currently used for diskectomy, including open, minimally invasive open lumbar diskectomy, microlumbar diskectomy, microendoscopic diskectomy, and fully endoscopic diskectomy.[5][9] These surgical procedures can significantly enhance a patient's quality of life and functional outcomes, with high success rates observed in appropriately selected cases. Later in this activity, these methods will be further elaborated upon, highlighting their respective approaches and benefits in treating disk herniation.

Possible complications of lumbar diskectomy include the conditions mentioned below. Dural tear: Durotomy presents a significant risk during surgery due to unintentional tearing of the dura mater. This can lead to cerebrospinal fluid leakage and subsequent complications such as meningitis. Incidental durotomy occurs in up to 9% of cases and is frequently linked to excessive nerve traction during disk exposure.[19][20][21][22] Management typically involves placing a sponge pattie and extending the laminectomy edges to expose the tear, followed by primary repair using 5-0 nonabsorbable sutures. Additionally, utilizing biological glue can assist in sealing the dural tear and reducing the risk of cerebrospinal fluid leakage.[23] Iatrogenic neuropraxia: Iatrogenic neuropraxia, involving direct intraoperative nerve root injury, is reported to affect 1% to 2% of cases.[24] Surgical site infection: Surgical site infection occurs in 2% to 3% of cases, with wound dehiscence occurring in 1% to 2%. Epidural bleeding: Epidural bleeding can be managed by compressing the venous 'lakes' with a sponge pattie. In addition, hemostatic agents are recommended. Vascular injury: The reported incidence is less than 1%. The aorta and inferior vena cava are particularly at risk in the L1-L4 region, while the iliac vessels are vulnerable at L4-L5 and L5-S1.[25] In cases of large vessel injuries, embolization or laparotomy may be necessary for management. Epidural hematoma [26] Disk not identified: The correct surgical level must be confirmed by reviewing the imaging studies, ensuring they are no more than 2 months old. If necessary, the surgical corridor may need to be extended to facilitate better visualization and identification of the targeted disk. Failed back surgery syndrome: Recurrence rates of 3% to 15% and instability rates of 20% during 10 years of follow-up have been observed.[27] Patients may have persistent pain following lumbar disk surgery, which may be a part of failed back surgery syndrome.[28] Postoperative diskal pseudocyst [29] Iliac arteriovenous fistula [30] Retained nonabsorbable hemostatic material [31]

Failed back surgery syndrome: Recurrence rates of 3% to 15% and instability rates of 20% during 10 years of follow-up have been observed.[27] Patients may have persistent pain following lumbar disk surgery, which may be a part of failed back surgery syndrome.[28] Postoperative diskal pseudocyst [29] Iliac arteriovenous fistula [30] Retained nonabsorbable hemostatic material [31] Lumbar disk herniation recurrence: The reported incidence ranges from 3% to 15%.[4] Most recurrences occur at the same level of herniation and on the same side.[32] Recurrence rates after diskectomy vary widely, ranging from 1% to 25%.[19][20][21] In a study, the recurrence rate at 5-year follow-up was 6.27%, and 63% occurred within 6 months. Modic changes, disk height index, and facet orientation show a significant correlation.[33] Modic type-II and contained disks have higher odds of recurrence.[34] Male gender, smoking status, heavy labor, obesity, and diabetes are significant predictors of recurrence.[35][36] Reoperation: In 1 study comprising 1850 patients, 130 patients underwent reoperation and were successful in 62%. Herniation at different levels, recurrences at the same level, and scar formation showed excellent results in 98%, 54%, and 38% of cases.[37] An example of such complications is demonstrated in a meta-analysis from 1997 to 2020, where various diskectomy approaches, including open, microlumbar, microendoscopic, and fully endoscopic techniques, were associated with the following: Recurrence rates of 4.1%, 5.1%, 3.9% and 3.5% respectively. Reoperation rates of 5.2%, 7.5%, 4.9%, and 4% respectively. Wound complication rates of 3.5%, 3.5%, 1.2%, and 2% respectively. Durotomy rates of 6.6%, 2.3%, 4.4%, and 1.1% respectively. Neurological complication rates of 1.8%, 2.8%, 4.5%, and 4.9% respectively. Nerve root injury rates of 0.3% of microlumbar cases, 0.8% of microendoscopic cases, and 1.2% of full endoscopic cases.[8]

Effective care delivery during the preoperative, intraoperative, and postoperative phases of diskectomy relies on collaboration among various healthcare professionals. Physicians, advanced practitioners, nurses, pharmacists, and other members of the healthcare team play crucial roles in ensuring patient-centered care, optimizing outcomes, enhancing patient safety, and improving team performance. Physicians and advanced practitioners leverage their clinical expertise to assess patients, determine surgical candidacy, and develop individualized treatment plans. Nurses are pivotal in patient education, preparing patients for surgery, and providing postoperative care, including monitoring for complications and managing pain. Pharmacists contribute by ensuring appropriate medication management, including pain management and prophylactic antibiotics, while identifying potential drug interactions or contraindications. Physical therapists and other members of the rehabilitation team play vital roles in the nonsurgical management of disk herniations, utilizing modalities such as medication, rest, and physical therapy, as well as in the comprehensive care of patients undergoing diskectomy procedures. They contribute significantly to preoperative preparation, postoperative rehabilitation, and long-term recovery, ensuring optimal patient outcomes. Effective interprofessional communication is essential throughout the care continuum, facilitating information exchange, care coordination, and shared decision-making among healthcare team members. By collaborating closely and leveraging each team member's unique skills and expertise, healthcare professionals can optimize patient outcomes, enhance patient safety, and improve team performance related to diskectomy procedures.