Spine Disorders Practice Questions

Q: A 10-year-old boy presents with scoliosis, a tuft of hair over the skin of the lumbar spine, and weakness with features of lower motor neuron paralysis in both lower limbs. An X-ray of the spine reveals fusion of the two lumbar vertebrae at that level. What is the most likely diagnosis?

Diastematomyelia. **Explanation:** The clinical presentation of a **tuft of hair (hypertrichosis)** over the lumbar spine, combined with **scoliosis** and **lower motor neuron (LMN) signs** in the lower limbs, is a classic triad for **Diastematomyelia**. **1. Why Diastematomyelia is correct:** Diastematomyelia is a form of spinal dysraphism where the spinal cord is longitudinally split into two halves by a fibrous, cartilaginous, or bony midline septum. This septum often "tethers" the cord. As the child grows, the vertebral column elongates faster than the spinal cord, causing traction injury. This leads to neurological deficits (LMN paralysis) and orthopedic deformities like scoliosis or clubfoot. Cutaneous markers (hair tufts, dimples, or lipomas) are present in over 50% of cases. **2. Why other options are incorrect:** * **Hemivertebra:** While a common cause of congenital scoliosis, it is a structural failure of vertebral formation and does not typically present with midline cutaneous hair tufts or primary LMN paralysis unless associated with other cord anomalies. * **Sacrococcygeal Teratoma:** This is a germ cell tumor presenting as a visible mass at the base of the coccyx, usually diagnosed in neonates. It does not cause a split cord or the specific neuro-orthopedic syndrome described. * **Spinal Muscular Atrophy (SMA):** This is a genetic degeneration of anterior horn cells. While it causes LMN weakness and scoliosis, it does not present with cutaneous markers (hair tufts) or vertebral fusion/septation. **Clinical Pearls for NEET-PG:** * **Imaging of Choice:** MRI is the gold standard to visualize the split cord. * **Associated Findings:** Often associated with **Tethered Cord Syndrome** and **Spina Bifida Occulta**. * **Key Sign:** The "tuft of hair" is the most common cutaneous sign of occult spinal dysraphism.

Q: A middle-aged male presents with back pain. X-ray reveals syndesmophytes involving four continuous vertebrae. What is the most likely diagnosis?

Ankylosing spondylitis. **Explanation:** The correct answer is **Ankylosing Spondylitis (AS)**. The hallmark radiographic feature of AS is the formation of **syndesmophytes**, which are thin, vertical, bony outgrowths originating from the corners of the vertebral bodies. These result from inflammation and subsequent ossification of the outer fibers of the annulus fibrosus. When these syndesmophytes bridge multiple continuous vertebrae, they create the classic **"Bamboo Spine"** appearance. **Why other options are incorrect:** * **Diffuse Idiopathic Skeletal Hyperostosis (DISH):** While DISH also involves ossification of the spine, it typically presents as thick, flowing calcification of the **Anterior Longitudinal Ligament (ALL)**, often described as "melted candle wax." Crucially, DISH preserves the disc space and does not involve the sacroiliac (SI) joints, unlike AS. * **Rheumatoid Arthritis:** This primarily affects the cervical spine (atlantoaxial subluxation) and small joints of the hands. It is an erosive disease and does not typically form syndesmophytes. * **Osteoarthritis:** This presents with **osteophytes**, which are horizontal, claw-like bony spurs resulting from degenerative changes, rather than the vertical syndesmophytes seen in inflammatory spondyloarthropathies. **High-Yield Clinical Pearls for NEET-PG:** * **Earliest Sign:** The earliest radiographic sign of AS is **Sacroiliitis** (blurring of the lower 2/3rd of the SI joint). * **Genetic Association:** Strongly linked with **HLA-B27** (>90% of cases). * **Clinical Test:** **Schober’s Test** is used to assess restricted lumbar flexion. * **Extra-articular manifestation:** The most common is **Acute Anterior Uveitis**. * **Key Radiographic Terms:** "Bamboo spine," "Dagger sign" (ossification of supraspinous/interspinous ligaments), and "Anderson lesion" (discovertebral inflammation).

Q: Minerva jacket is used for which of the following conditions?

Cervical tuberculosis. **Explanation:** The **Minerva jacket** (or Minerva cast) is a specialized orthopedic brace or plaster cast designed to immobilize the **cervical and upper thoracic spine**. It provides stabilization by encompassing the chin and occiput (to prevent head movement) and extending down to the rib cage or waist. **1. Why Cervical Tuberculosis is Correct:** In cases of spinal tuberculosis (Pott’s disease) involving the cervical vertebrae, rigid immobilization is crucial to prevent neurological deficits (quadriplegia) and promote healing. The Minerva jacket effectively restricts flexion, extension, and rotation of the neck, making it the traditional choice for **cervical and cervicothoracic junction** lesions. **2. Why the Other Options are Incorrect:** * **Dorsolumbar Tuberculosis:** This region (T12-L1) is typically immobilized using a **Taylor’s Brace** or a **Body Jacket (Milwaukee brace is for scoliosis)**. The Minerva jacket does not provide enough leverage to stabilize the lower spine. * **Lumbar Tuberculosis:** Lower spinal lesions require a **Goldthwait brace** or a lumbosacral orthosis (LSO) to restrict lumbar motion. * **Sacral Tuberculosis:** This is rare and usually managed with bed rest or pelvic stabilization; a jacket extending to the head is anatomically unnecessary. **Clinical Pearls for NEET-PG:** * **Four-Poster Brace:** Another orthosis used for cervical spine stabilization, but less rigid than the Minerva jacket. * **Halo-Vest:** Provides the maximum degree of cervical immobilization (superior to Minerva). * **Taylor’s Brace:** High-yield for **Dorsolumbar** spine (contains two vertical posterior bars). * **Milwaukee Brace:** Specifically used for **Scoliosis** (apex above T8). * **Somi Brace:** (Sternal Occipital Mandibular Immobilizer) is used for cervical spine, often in bedridden patients.

Q: According to Boyd's classification, which grade is assigned when pain continues but the patient can still walk with effort?

Grade 2. **Explanation:** The question refers to **Boyd’s Classification of Pain in Spinal Disorders**, which is a clinical grading system used to assess the functional impact of pain on a patient's mobility and daily activities. **Why Grade 2 is Correct:** According to Boyd’s classification, **Grade 2** is defined as a state where the patient experiences persistent or continuous pain, but they are still able to **walk with effort**. The pain is significant enough to be a constant presence, yet it has not yet reached the threshold of total functional incapacitation. **Analysis of Incorrect Options:** * **Grade 1 (Option A):** This represents mild or intermittent pain. The patient can walk normally without significant effort or functional limitation. * **Grade 3 (Option B):** This grade is assigned when the pain becomes severe enough that the patient is **unable to walk** or is confined to a bed/chair. The transition from Grade 2 to Grade 3 is marked by the loss of independent ambulation. * **Grade 4 (Option D):** This is the most severe stage, characterized by agonizing pain often accompanied by objective neurological deficits (like paralysis or bladder/bowel involvement) or complete physical collapse. **NEET-PG High-Yield Pearls:** * **Clinical Focus:** Boyd’s classification is specifically useful for documenting the progression of degenerative conditions like Lumbar Canal Stenosis or Prolapsed Intervertebral Disc (PIVD). * **Key Differentiator:** The "ability to walk with effort" is the hallmark of Grade 2. Once the patient stops walking, they move to Grade 3. * **Management Correlation:** Grades 1 and 2 are often managed conservatively, whereas Grades 3 and 4 frequently necessitate surgical intervention.

Q: What is the treatment of choice for a patient with D7-D8 Pott's disease presenting with paraplegia?

Anti-Koch's treatment (AKT). In Pott’s disease (Spinal Tuberculosis), the primary treatment modality is medical management. **Why Anti-Koch’s Treatment (AKT) is the Correct Answer:** The standard of care for spinal TB, even in the presence of neurological deficits like paraplegia, is the initiation of **Anti-Koch’s Treatment (AKT)**. In most cases of "early-onset" paraplegia (caused by inflammatory edema, granulation tissue, or abscess), the neurological symptoms resolve significantly with chemotherapy alone. Surgery is generally reserved for patients who fail to respond to AKT or have specific mechanical indications. **Why Other Options are Incorrect:** * **Laminectomy:** This is generally **contraindicated** in Pott’s disease. Since TB primarily affects the vertebral bodies (anterior column), a laminectomy removes the only remaining stable posterior elements, leading to spinal instability and worsening kyphosis. * **Anterior/Posterior Decompression:** These are surgical interventions. While anterior decompression (e.g., Hong Kong operation) is effective for clearing necrotic bone and pus, it is **not the first-line** treatment of choice. Surgery is indicated only if there is no neurological improvement after 3–4 weeks of AKT, rapid worsening of paraplegia, or severe spinal instability. **Clinical Pearls for NEET-PG:** * **Most common site:** Lower Thoracic (Dorsal) spine. * **Earliest sign on X-ray:** Reduction in disc space (due to destruction of adjacent vertebral endplates). * **Cold Abscess:** In the dorsal spine, it presents as a **"Bird’s Nest" appearance** (paravertebral shadow) on X-ray. * **Tuli’s Classification:** Used to stage neurological deficit in spinal TB. * **Gold Standard Investigation:** MRI (shows marrow edema and soft tissue involvement earliest).

Q: Milwaukee brace is used for the management of which condition?

Scoliosis. **Explanation:** The **Milwaukee brace** (Cervico-Thoraco-Lumbo-Sacral Orthosis or CTLSO) is a classic active corrective orthosis primarily used for the non-operative management of **Scoliosis**. It is specifically indicated for curves with an apex above T8. The brace works on the principle of longitudinal traction and lateral pressure, utilizing a neck ring, pelvic mold, and upright bars to provide corrective forces that prevent curve progression during skeletal growth. **Analysis of Options:** * **Scoliosis (Correct):** It is the gold standard for high thoracic curves. It aims to maintain the curve until skeletal maturity (Risser sign 4 or 5). * **Kyphosis:** While the Milwaukee brace can be modified for Scheuermann’s kyphosis, its primary and most classic association in orthopedic examinations is Scoliosis. * **Spondylolisthesis:** This condition (forward slippage of vertebrae) is typically managed with a **Boston brace** (TLSO) or a lumbosacral corset to limit extension, not a Milwaukee brace. * **Developmental Dysplasia of the Hip (DDH):** DDH is managed using dynamic splints like the **Pavlik harness** (for infants <6 months) or a Von Rosen splint. **High-Yield Clinical Pearls for NEET-PG:** * **Boston Brace:** A Thoraco-Lumbo-Sacral Orthosis (TLSO) used for scoliosis with an apex below T8 (more cosmetically acceptable as it lacks the neck ring). * **Charleston Bending Brace:** A "night-time only" brace used for scoliosis. * **Indication for Bracing:** Generally indicated for curves between **20° and 40°** (Cobb’s angle) in a growing child. * **Indication for Surgery:** Usually required when the Cobb’s angle exceeds **40°–45°**.

Question 1

A 10-year-old boy presents with scoliosis, a tuft of hair over the skin of the lumbar spine, and weakness with features of lower motor neuron paralysis in both lower limbs. An X-ray of the spine reveals fusion of the two lumbar vertebrae at that level. What is the most likely diagnosis?

Accepted Answer

Diastematomyelia

Answer

Hemivertebra

Answer

Sacrococcygeal teratoma

Answer

Spinal muscular atrophy

Question 2

A middle-aged male presents with back pain. X-ray reveals syndesmophytes involving four continuous vertebrae. What is the most likely diagnosis?

Accepted Answer

Ankylosing spondylitis

Answer

Diffuse idiopathic skeletal hyperostosis (DISH)

Answer

Rheumatoid arthritis

Answer

Osteoarthritis

Question 3

Which of the following are indicators of poor prognosis in Pott's spine?

Accepted Answer

Healed vertebral lesion, Grade 4 Pott's spine, and kyphotic angle > 60 degrees are true; short duration and acute onset are false.

Answer

Healed vertebral lesion, Grade 4 Pott's spine, and short duration are true; kyphotic angle > 60 degrees and acute onset are false.

Answer

Healed vertebral lesion and Grade 4 Pott's spine are true; kyphotic angle > 60 degrees, short duration, and acute onset are false.

Answer

All indicators are true.

Question 4

Arrange the following conditions according to the worsening stages in Tuli's clinical staging: paraplegia in extension, ankle clonus present with extensor plantar response and no sensory deficit, no sensory deficit with motor deficit and ambulatory with support, paraplegia in flexion?

Accepted Answer

Ankle clonus present, extensor plantar response, no sensory deficit -> No sensory deficit, motor deficit, ambulatory with support -> Paraplegia in extension -> Paraplegia in flexion

Answer

No sensory deficit, motor deficit, ambulatory with support -> Ankle clonus present, extensor plantar response, no sensory deficit -> Paraplegia in extension -> Paraplegia in flexion

Answer

No sensory deficit, motor deficit, ambulatory with support -> Paraplegia in extension -> Ankle clonus present, extensor plantar response, no sensory deficit -> Paraplegia in flexion

Answer

Ankle clonus present, extensor plantar response, no sensory deficit -> Paraplegia in extension -> No sensory deficit, motor deficit, ambulatory with support -> Paraplegia in flexion

Question 5

Minerva jacket is used for which of the following conditions?

Accepted Answer

Cervical tuberculosis

Answer

Dorsolumbar tuberculosis

Answer

Lumbar tuberculosis

Answer

Sacral tuberculosis

Question 6

Which of the following is NOT an indication for surgery in Pott's spine?

Accepted Answer

Stage 3 disease

Answer

No clinical improvement after 4 weeks of anti-tuberculosis treatment (ATT)

Answer

Bowel and bladder involvement

Answer

Stage 4 disease

Question 7

A 27-year-old woman presents with pain and numbness in her right arm and hand, exacerbated by raising her arm overhead. A provisional diagnosis is made. Which of the following statements is true regarding this condition?

Accepted Answer

If conservative measures fail, surgical decompression of the brachial plexus is the best treatment.

Answer

It is associated with cervical spine disk disease.

Answer

It is reliably diagnosed by positional obliteration of the radial pulse.

Answer

It most commonly affects the median nerve.

Question 8

According to Boyd's classification, which grade is assigned when pain continues but the patient can still walk with effort?

Accepted Answer

Grade 2

Answer

Grade 1

Answer

Grade 3

Answer

Grade 4

Question 9

What is the treatment of choice for a patient with D7-D8 Pott's disease presenting with paraplegia?

Accepted Answer

Anti-Koch's treatment (AKT)

Answer

Anterior decompression

Answer

Laminectomy

Answer

Posterior decompression

Question 10

Milwaukee brace is used for the management of which condition?

Accepted Answer

Scoliosis

Answer

Kyphosis

Answer

Spondylolisthesis

Answer

Developmental dysplasia of the hip

Spine Disorders — MCQs

Spine Disorders — MCQs

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