Lumbar Back Pain Dr Mark Gillett Lead Physician EIS West Midlands.

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Presentation transcript:

Lumbar Back Pain Dr Mark Gillett Lead Physician EIS West Midlands

Outline Diagnostic categories Imaging dilemmas in extension related back pain

Aims Illustrate some of the problems regularly encountered by a sports physician working with an elite multi-sport population. Put the literature to one side- what do I tell the athletes and coaches?

Types Flexion related: discogenic pain Extension related: pars interarticularis and facet joints

Recent Case Study 22 year old heptathlete 3 week history extension related back pain Developed mumps 10 day convalescence Competed world indoor trials few days later Saw track physician with back pain at meet

Recent Case Study MRI scan- NAD (report only ) Left lower facets and right mid-thoracic costo-transverse joint pain 10 days manual therapy- no consistent improvement Caudal epidural-no consistent improvement

Recent Case Study Lumbar CT- avulsion fracture IAP of L1 at right L1-2 facet joint Injection into fracture site- now pain free Time from 1st consultation with me to pain free was 3 weeks

Problems Created MRI entirely normal Expectation of sport that all extension related pain with normal MRI will be followed by a CT

Extension Related Pain Spondylolysis Spondylolisthesis Facet joint dysfunction

Diagnostic Strategy History of extension related pain > few days Pain and/or reduced range of motion in hyperextension One legged hyperextension test (Stork test) Facet joint loading

Investigation MRI- lumbar spine to look for pars oedema or fluid in facet joints Judicious use of CT SPECT- not found it useful

Management Issues Pars oedema useful sign on MRI but reliability of fracture identification is questionable In a patient with a normal MRI- when is the correct time to progress to CT?

Juvenile Spondylolysis: a comparative analysis of CT, SPECT and MRI Campbell et al Skeletal Radiol :63-73 General agreement good CT/SPECT vs MRI kappa: Discordance between groups when looking at stress reaction (1 in 11 case concordance) Discordance between groups when looking at incomplete fractures ( 3/10 cases downgraded on MRI to bone stress, 3/10 upgraded on MRI to complete defects)

Take Home MRI merely a screening tool to identify pars oedema Athletes with pars oedema on MRI require a CT to detect a pars fracture

Facet Joints Literature search for work examining sens/spec/PPV/NPV and inter-observer variation for MRI facet joint fluid Nothing found Most of literature devoted to similar analyses for disc degeneration

The prevalence of lumbar facet joint edema in patients with low back pain. Friedrich K M Skeletal Radiol. 2007Aug;36(8): consecutive MRI scans retrospectively reviewed by 2 musculoskeletal radiologists Scan indication low back pain Mean age 52.8 years 14% showed bone marrow and soft tissue oedema at lumbar facets. All cases showed signs of OA. L4-5 most common

Magnetic resonance imaging showed no signs of overuse or permanent injury to the lumbar sacral spine during a Special Forces training course Shachar Aharony MD a Spine J Mar 2 10 soldiers underwent MRI of their lumbar sacral spines and right knees before and after the completion of a Navy Seals preparatory training lasting 14 weeks Before the training, 7/10 spine MRIs were normal. 2 showed small L5–S1 disc bulges, 1 of these also had Scheuermann's disease. The 3rd soldier's MRI showed L1–L4 mild Scheuermann's disease. Follow-up MRI showed no spinal changes

Demands “Soldiers train wearing ceramic vests weighing 7 kg, carrying rifles weighing between 4 and 5.5 kg, and a pack up to 40% of their body weight while running and marching for distances up to 90 km. At the end of marches, teams of four soldiers walk and run over a hilly terrain, with a stretcher carrying a soldier with his full gear for up to 6 km. These soldiers are very motivated, have high pain tolerance, and are unlikely to seek medical care”

Conclusions “These findings, along with the present study, suggest that young healthy trainees can do demanding activity in the short run without any evidence of damage to their lumbar sacral spines.”

Disagree Doesn’t this suggest that MRI is not accurate enough to effectively screen out potentially significant spinal pathology in an athletic population?

E=Extension related back pain MRI Oedema CT No oedema Biomechanical analysis Time limited rehab Recovery Failed recovery CT

Advantages Clear and transparent system for coaches and athletes Utilises radiological investigations rationally and limits radiation exposure

?

Thank you