II. Definitions
- Spondylolisthesis- Slippage of one Vertebrae over another
- L5 on S1 is the most common site
 
III. Types
- Degenerative Spondylolisthesis (adults)- More common in women over age 40
 
- Isthmic Spondylolisthesis (children)- Secondary to Spondylolysis
- More common in athletes (gymnastics, football)
 
IV. Symptoms
- Back pain radiates posteriorly into knees
- Hamstring spasms with inability to bend forward
- Limited Straight Leg Raise
- Bending, lifting or twisting provokes pain
V. Signs
- Loss of lumbar lordosis
- Flattening of buttocks
- Step-off at the affected spinous process (usually L5)
- Hamstring spasm- Limited forward flexion
- Difficult Straight Leg Raise
 
VI. Imaging: Lateral Lumbosacral Spine XRay
- Position of posterior-inferior corner of involved Vertebrae (e.g. L5)- Grading anterior slippage based on position over segment or Vertebrae immediately below (e.g. S1)
 
- 
                          Vertebrae or sacral base (e.g. top of S1) is divided into 4 sections- Grade 1: <26% slippage (posterior)
- Grade 2: 26-50% slippage
- Grade 3: 51-75% slippage
- Grade 4: 75-100% slippage (anterior)
- Grade 5: >100% slippage (Spondyloptosis)
 
- Consider flexion and extension views- May demonstrate instability
 
VII. Monitoring
- 
                          General- Return for new neurologic symptoms or Cauda Equina Syndrome symptoms
 
- Adolescents- Repeat XRay every 6 months until full adult height reached
 
VIII. Management
- Conservative management- Avoid provocative activities (e.g. spine extension, squats)
- Encourage light activity (NOT bed rest) with Stretching
- Avoid heavy lifting
- Analgesics for pain
- Consider bracing
- Physical therapy
 
- Return to Play Guidelines- Grade 1 Spondylolisthesis athletes may return to Contact Sports
- Grade 2 Spondylolisthesis athletes require sports medicine or spine evaluation prior to return to sports
 
IX. Management: Orthopedic or spine surgeon referral indications
- High grade slippage >50% (Grade 3 to 4)
- Failed medical management with persistent pain >6 months
- Instability (may require Spinal Fusion)
X. Prognosis
- Conservative, non-surgical management results in good to excellent longterm outcomes in >90% of athletes
XI. References
- Greene (2001) Musculoskeletal Care, p. 573-6
- Humphreys (2002) Am Fam Physician 65(11):2299-306 [PubMed]
