FM&PH – Back Pain
module Family Medicine and Public Health
Gary Range has back pain. Back pain is a very common complaint but has considerable morbidity associated with it.
Guidance and Resources – Back Pain
Case Introduction – Back Pain
Further Case Information – Back Pain
Background Science – Back Pain
Case Conclusion – Back Pain
Formative Assessment – Back Pain
CASE COMPONENT
Guidance and Resources – Back Pain
In case FM&PH – Back Pain
Recommended Essential Resources
· Spine-health.com: Spine anatomy interactive video
· Patient.info: ‘Red flags’ in back pain
Additinal Reading/Resources
· The most recent NICE guidelines are here. Most online resources are based on the older NICE guidelines; it’s useful to be aware of this.
· Patient.info: Terms used in relation to the back
· Patient.info: Spinal stenosis
· Example patient information leaflets:
· Information about assessing back pain using the STarT tool
· Additional resource for further reading about physiotherapy
CASE COMPONENT
Case Introduction – Back Pain
You’re sitting in with a GP in surgery and your next patient is Gary Range, a 40 year old carpenter. You haven’t met him before. You look through his medical notes before you call him in. He has seen one of the other GP’s in the surgery complaining of back pain. His PMH includes depression. He’s not on any prescribed medication, and doesn’t have any known drug allergies.
The GP asks you to start the history. You call Gary into the room; he walks in slowly, and with a limp. “It’s my back it isn’t better. I’m in so much pain, there must be something seriously wrong!”
You ask him to tell you more about what’s been happening and how this has been affecting him. “I already told the other doctor all of this! Can’t you just read the notes?” You acknowledge his frustration but explain that it’s important to find out what has been going on since he was last seen and make sure you don’t miss out any important information. You then find out:
· Gary works fitting kitchen cabinets; he’s done this for around 20 years.
· He doesn’t remember the exact trigger of his back pain, but thinks it was because he had been lifting heavy boxes.
· He describes the pain as feeling tight and aching, as if his back goes tight.
· He doesn’t want to go back to his job now, he hates his boss.
· He says “it’s his fault he always makes me move the heavy boxes. I’m not going back to that job unless my back is ok. I don’t want to damage it. I’m fine when I rest my back, but it’s when I start to do anything. It really hurts here (he points to his lumbar spine). I thought I might need an X-ray, you know, maybe my disc has popped out. I’ve been suffering for 6 weeks now!”
Consider all the differential diagnoses you have at this stage, including those you think may be less likely. Select the diagnoses below to see how relevant they may (or may not be) be when considering Gary’s history.
NB: There are lots of terms that sound similar.
To clarify:
· SPONDY = spine
· SpondyLOSIS = degenerative
· SpondyLITIS = Inflammatory, this can be due to anything that results in inflammation.
· SpondyloLYSIS = “break down” of a bone typically a stress fracture of the Pars Interarticularis, classically seen as a Scottie dog fracture on an X-ray.
· SpondyloLESTHESIS = (to slip) – Slippage of a vertebrae body (not disc) typically due to a Pars Interarticularis fracture, but can also happen in degenerative conditions. This can cause nerve root compression.
CASE COMPONENT
Further Case Information – Back Pain
You review the notes which state that Gary had no red flag symptoms when he last consulted, but you check again.
Red flags are symptoms or signs that could potentially indicate a serious cause for the back pain.
Even though serious causes are less likely, it is always important to ask questions and examine for signs that help you rule out the serious differential diagnoses you have considered.
One condition which requires urgent attention if present is Cauda Equina Sydrome.
If there is compression of the spinal cord a patient develops myelopathy. The cauda equina ‘horses tail’ starts at L1 which is the end of the conus medullaris. This is where all the nerve roots come together. If compression occurs at the Cauda equina patients will have a specific set of symptoms that you MUST always ask about. This is a surgical emergency and needs immediate referral. If it is left untreated it can lead to permanent leg paralysis, and loss of bladder and bowel control!
Symptoms and signs you should ask about and examine for include:
Gary doesn’t have any red flag symptoms. He also has no symptoms or signs to suggest nerve root irritation or nerve root compression. There is more information about this in the background science tab.
Gary denies any neurological symptoms and the pain doesn’t radiate to the buttocks or the legs.
It’s not worse when walks. He is the same height as usual and his posture is unchanged.
“I’m scared of moving my back in case I do more damage. I haven’t been taking lots of painkillers, they just mask the problem and I might make my back worse, plus I don’t want to be addicted to them”. He may occasionally take paracetamol, he has taken 4 tablets in the last 2 weeks, but they didn’t seem to help.
You ask Gary if you can examine him:
Inspection: No obvious deformities (e.g scoliosis, or kyphosis. He doesn’t have ataxia).
Palpation: He has mild generalised pain in his lumbar spine L4, L5 area, no specific bony tenderness and has tenderness along the Lattisimus Dorsi bilaterally. He doesn’t have any pain in his thoracic spine.
Movement: You check his movements in all planes: flexion, extension, lateral flexion and rotation. He has limited flexion to 45 degrees, but the rest of his movements are normal, extension doesn’t cause any pain, he doesn’t have paraspinal muscle tenderness. His straight leg raises are limited by hamstring tightness rather than pain and are both 45 degrees. He is able to walk on both his heels, and toes.
Neurological findings: Sensation is normal. Ankle, and knee reflexes are present. He has no clonus and both plantars were down going.
The GP uses the STarT tool to help with shared decision making and planning further management with the patient.
The NICE recommended tool can be used for back pain in primary care to identify patients that are more likely to have longer term back symptoms.
Gary agrees with questions 3-8 and mentions that his pain is ‘extremely’ bothersome in question 9.
He scores 7. This makes him high risk.
The GP informs you after the consultation that he identified that Gary has some yellow flags, and these may be contributing to his delayed improvement.
Yellow flags are usually social and psychological cues derived from the bio-psycho social model of illness that may indicate that the patient is at risk develop chronic back pain.
CASE COMPONENT
Background Science – Back Pain
Back pain is extremely common in the KSA, with:
· 53-79% of the population complaining of this in their lifetime.
· It is a leading cause of disability and absence from work in the KSA and globally.
There are multiple causes of back pain, with the majority of this being self-limiting, but they can cause significant disability. It is important that we don’t miss the less common but serious causes of back pain.
You can go to this link to find the most recent NICE guidelines. Most online resources are based on the older NICE guidelines, it’s useful to be aware of this.
Anatomy Revision
Radiation down a specific nerve root can cause symptoms that are sensory, nociceptive or motor related.
Nerve pain that patients may complain of include: cold to burning, shooting, tingling, or numbness. They may also complain of weakness.
CASE COMPONENT
Case Conclusion – Back Pain
Gary is very anxious and worried about his back. The GP realises that he will need a clear explanation of what’s going on.
What are the limitations of an X-ray in back pain?
X-rays aren’t very useful as an investigation for back pain, they can be useful to identify fractures and in established Ankylosing spondylitis. MRI scans are more useful to identify spinal and soft tissue pathology including nerve root compression and Cauda Equina. The amount of radiation exposure during a spinal X-ray is 1.5 mSv whilst a standard CXR is 0.1 mSv. Nice guidance advises that MRI scans should be done in secondary care if this helps with further management.
The GP explains why she thinks the X-ray wouldn’t be beneficial for Gary because of the limited information which is gained for his presentation, and the risks associated with the radiation in order to get the images.
She addresses Gary’s concerns, and explains that with support his back will improve, and the more he uses his back the sooner he can return to normal.
She discusses the options for management, which include:
· Being ‘back aware’ – making sure of correct posture for lifting and taking care with his work not to put unnecessary strain on his back. The GP also gives Gary some patient information leaflets from the ‘Web Mentor’ facility on Emis (the practice computer system) and a link to Backcare.org.
· Painkillers – this might include anti-inflammatories and paracetamol
· Physiotherapy
The GP discusses the options the patient has for painkillers. He is a bit wary of taking anything, but agrees he needs to take something but just as long as he isn’t doing any damage to his back. The GP reviews the electronic record during the consultation to check for allergies, intolerances and also renal and liver function tests, which are normal. She explains that the back needs to move for it to be healthy and that the painkillers will help him to do this, this doesn’t damage his back.
The GP suggests ibuprofen 400mg three times per day, for short term relief of the pain.
Which of the following statements are TRUE about ibuprofen?
· It is an opioid analgesic
· It can cause bronchospasm in asthmatics
· Some evidence of increased cardiovascular events with long term use
· It can be prescribed
· It can be associated with renal deterioration
· It contains paracetamol
· It can be addictive
· It can be bought over the counter
Which of the following statements are TRUE about ibuprofen?
· It is an opioid analgesic
.
It is a non-steroidal anti-inflammatory drug NSAID
· It can cause bronchospasm in asthmatics
.
Correct answer.
· Some evidence of increased cardiovascular events with long term use
.
Correct answer.
· It can be prescribed
.
Correct answer.
· It can be associated with renal deterioration
.
Correct answer.
· It contains paracetamol
.
· It can be addictive
.
· It can be bought over the counter
.
Correct answer.
It may be useful at this point to review the chapter on prescribing analgesia in Prescribing Skills Handbook 2
Gary has never had any wheeze/asthma, and has taken ibupforen in the past without any stomach problems. Gary doesn’t suffer from heart burn. He is pleased that it’s not addictive. Gary is happy with this option. The GP outlines the possible risks of the medication, including possible stomach irritation and suggests that he should take this with food and advises him to to stop the medication and return for either an alternative medication or additional medication to protect his stomach if he does get any symptoms. He is advised to take it for a period of 2-3 weeks, and then review with the GP.
The GP explains that the main goal now is the get Gary back to normal so that he can continue with his normal activities, his job and his normal life and that she expects that this will happen. However, given his job involves heavy lifting, she suggests a fit note, with ‘amended duties’ to avoid heavy lifting.
Gary says he doesn’t feel that he is able to go back to any work at the moment, and he has already had 7 days off. The GP negotiates a period of a further week ‘signed off’ with a fit note marked ‘unable to work’. She arranges a review with him in 2-3 weeks, which Gary is happy with.
The GP makes sure that she gives Gary some safety netting advice. This is advice given to patients so that they know what to do if things change, and if there are any specific symptoms or signs which warrant them to do something particular.
How would you safety net Gary?
You should always ‘safety net’ patients whom you see. This is particularly important in conditions like back pain as it is associated with a significant disability. You will have another case where you will look at time off work and the impact this has on health. Patients need to be given information on what features mean they should be reviewed sooner and when the symptoms are likely to resolve.
Gary should be told about the red flag symptoms, and that if these symptoms occur he would have to return as an emergency.
You should also safety net any new medications you start and any potential side effects these may cause. If you have arranged follow up make sure the patient is aware they can return sooner than this if needed.
When Gary returns 3 weeks later he is feeling much better. He had used ibuprofen for a few days, and been swimming. He has returned to work and is being much more careful when lifting, and his employer has taken his needs into account and the company have brought in some lifting equipment.
When Gary returns 3 weeks later he is feeling much better. He had used ibuprofen for a few days, and been swimming. He has returned to work and is being much more careful when lifting, and his employer has taken his needs into account and the company have brought in some lifting equipment.
Formative Assessment – Back Pain
A 19 year old male patient has a history of Ulcerative Colitis, and mentions that he has had back pain for 4 months, mainly in the lower back, and hip area. His back is very stiff in the morning, lasting for about 60mins and is relieved with exercise. What is the most likely cause of his back pain?
· Intervertebral Disc Prolapse
· Bony Metastasis
· Osteoporotic fracture
· Multiple Myeloma
· Ankylosing Spondylitis
· Ankylosing Spondylitis
.Correct answer.
Ankylosing Spondylitis is an inflammatory arthritis. This is one of the red flag conditions you need to ask about. It is characterised by Stiffness lasting longer than 45 minutes that is relieved with exercise. Inflammatory bowel disease and Ankylosing Spondylitis are often associated with the HLAB27 gene. The inflammation can cause the vertebrae to fuse. This typically presents in teenage years or, early adulthood. X-rays are useful in established disease where a bamboo spine can be seen.
Further reading: http://patient.info/doctor/ankylosing-spondylitis-pro
A 48 year old man, complained of pain after picking up a box, he initially had back pain but is now complaining of pain that is mainly in his left leg, he describes this as shooting in nature and has paraesthesia in the L4/5 nerve root distribution?
· Bony Metastasis
· Intervertebral Disc Prolapse
· Osteoporotic fracture
· Multiple Myeloma
· Ankylosing Spondylitis
· Intervertebral Disc Prolapse
.Correct answer.
These are typical radiculopathy symptoms. Out of the answers this is most likely due to an intervertebral disc prolapse which is either causing nerve root irritation or compression.
Further reading: http://patient.info/health/slipped-prolapsed-disc
A 68 year old man mentions that he is feeling very tired, becoming increasingly thirsty, and mentions that his back has become very painful. Blood tests show a very high ESR. He has Bence jones proteins/free light chains in his serum electrophoresis. What is the most likely diagnosis?
· Intervertebral Disc Prolapse
· Osteoporotic fracture
· Multiple Myeloma
· Ankylosing Spondylitis
· Bony Metastasis
A 68 year old man mentions that he is feeling very tired, becoming increasingly thirsty, and mentions that his back has become very painful. Blood tests show a very high ESR. He has Bence jones proteins/free light chains in his serum electrophoresis. What is the most likely diagnosis?
· Intervertebral Disc Prolapse
.
· Osteoporotic fracture
.
· Multiple Myeloma
.
Correct answer.
Correct. This is myeloma, he is over 50, tiredness, and new onset back pain. He may also have a hypercalcaemia calcium which can cause thirst. CRAB (Calcium raised, Renal dysfunction, Anaemia, Bone pain). Bence Jones proteins/free light chains need to be checked in both the blood and urine.
Further reading: http://patient.info/doctor/myeloma-pro
· Ankylosing Spondylitis
.
Bence Jones proteins/free light chains in either the urine or blood indicate myeloma. Patients tend to be below 40.
· Bony Metastasis
.
Bence Jones proteins/free light chains in either the urine or blood indicate myeloma
A 70 year old woman mentions she has severe back pain, she hasn’t fallen, but she has a history of osteoporosis. She hasn’t lost any weight, and is generally well in herself. She has noticed that she has become a bit shorter over the years. She is exquisitely tender over L3. What is the most likely diagnosis?
· Bony Metastasis
· Osteoporotic fracture
· Multiple Myeloma
· Ankylosing Spondylitis
· Intervertebral Disc Prolapse
· Bony Metastasis
.Bony metastasis can cause exquisite tenderness over the vertebrae and can cause pathological fractures, this is an important differential to consider in a 70 year old patient. The patient is well and hasn’t lost weight and has mentioned she has been losing height for years. Her history of osteoporosis makes this the most likely with her history.
· Osteoporotic fracture
.Correct answer.
Further reading: http://orthoinfo.aaos.org/topic.cfm?topic+A00538
· Multiple Myeloma
.Multiple myeloma can cause exquisite tenderness over the vertebrae and can cause pathological fractures, but as she has been losing height for years and has a history of osteoporosis this makes myeloma less likely.