Back Pain, Soft Tissue Inflammation, and Joint Disorders

Vocabulary flashcards covering the etiology, clinical features, non-pharmacological protocols (SOCRATES, PRICE, HARM), pharmacological treatment pathways, and red-flag referral criteria for back pain, soft tissue inflammation, and joint disorders.

Low Back Pain

Pain located in the lumbosacral region of the back, between the bottom of the ribs and the top of the legs.

Non-Specific Low Back Pain

Back pain that cannot be attributed to a recognizable, specific underlying pathology, frequently resulting from trauma or musculoligamentous strain.

Sciatica

Pain caused by irritation of the sciatic nerve that produces a sharp, stinging, tingling, or numb sensation radiating down the thighs and into the lower legs and feet, typically felt on only one side of the body.

Spinal Stenosis

A narrowing of the space around the spinal cord, which can be caused by osteoarthritis affecting the spine.

Axial Pain

Pain that remains confined within the low back and is characteristically described as dull and aching rather than sharp, stinging, or burning.

SOCRATES

A clinical mnemonic used to assess pain: Site, Onset, Character, Radiation, Associated symptoms, Timing, Exacerbating or relieving factors, and Severity.

First-Line Analgesia for Lower Back Pain

Oral non-steroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, taken at the lowest effective dose for the shortest possible duration in the absence of contraindications.

Second-Line Analgesia for Lower Back Pain

Short-term use of codeine, administered with or without paracetamol, indicated when an NSAID is contraindicated, not tolerated, or ineffective.

Paracetamol Monotherapy in Lower Back Pain

A prescribing restriction stating that paracetamol alone should not be offered for the management of lower back pain.

Co-Codamol

A combination oral analgesic formulation containing $8\,\text{mg}$ of codeine and $500\,\text{mg}$ of paracetamol per tablet or effervescent tablet.

Rubefacients

Topical counter-irritant agents containing salicylates (e.g., methyl salicylate or oil of wintergreen) or nicotinate esters that cause skin irritation to relieve underlying musculoskeletal pain.

Capsaicin

A topical agent derived from chili pepper (Capsicum minimum) that incites sensory nerve irritation without rubefaction; classified as a POM in the UK.

Cauda Equina Syndrome

A red-flag surgical emergency characterized by altered sensation or numbness around the genitals or buttocks (saddle anesthesia) alongside disturbance of bladder or bowel function.

Red Flags in Lower Back Pain

Alarm features requiring immediate referral: cauda equina symptoms, history of aortic aneurysm, sudden onset headache or neck stiffness, fever of $38^\circ\text{C}$ or above, unexplained weight loss, serious trauma, or new-onset pain in patients aged $< 20\,\text{years}$ or $> 50\,\text{years}$.

Sprain

A stretching and/or tearing of a ligament (a tough band of fibrous tissue that connects bone to bone), most commonly occurring in the ankles, knees, wrists, and thumbs.

Strain

A stretching and/or tearing of muscle fibres and/or tendon tissue (fibrous cord that attaches muscle to bone), frequently occurring in the hamstring, leg, foot, and back.

Bruise (Contusion)

An injury caused by burst capillaries that leak blood underneath intact skin, presenting initially as red or bluish-purple and fading to yellow or green as the extravasated blood breaks down.

First-Line Medication for Sprains and Strains

Paracetamol or a topical NSAID (such as ibuprofen gel) recommended initially for acute pain relief.

Oral NSAID Timing in Acute Soft Tissue Injury

Oral NSAIDs (e.g., ibuprofen) should only be considered after an initial delay of $48\,\text{hours}$ post-injury if symptoms require further control.

PRICE Protocol

An acute soft tissue injury management acronym: Protect the injury, Rest the injury, Ice with a wrapped pack, Comfortable supportive bandaging, and Elevate to reduce swelling.

HARM Protocol

A mnemonic of factors to avoid during the first $72\,\text{hours}$ ($2\text{ to }3\,\text{days}$) post-injury: Heat, Alcohol, Running, and Massage, all of which increase bleeding and swelling.

Osteoarthritis (OA)

The most prevalent mechanical joint disorder worldwide, defined as an inherent active repair process of synovial joints involving cartilage degradation and bony remodeling.

Crepitus

A characteristic crunching, cracking, or grating sensation and sound felt or heard upon moving an osteoarthritic or damaged joint.

Heberden's Nodes

Bony enlargements and deformities formed by osteophytes at the distal interphalangeal (DIP) joints of the fingers in osteoarthritis.

Bouchard's Nodes

Bony enlargements and deformities formed by osteophytes at the proximal interphalangeal (PIP) joints of the fingers in osteoarthritis.

Mechanical Joint Pain Presentation

Joint pain that worsens during exercise and is relieved by rest, accompanied by morning stiffness lasting less than $30\,\text{minutes}$ and common stiffness following inactivity.

First-Line Drug Treatment for Osteoarthritis

Topical non-steroidal anti-inflammatory drugs (NSAIDs) such as diclofenac, ibuprofen, or methyl salicylate.

Second-Line Drug Treatment for Osteoarthritis

Oral NSAIDs, which improve joint pain and stiffness but require co-prescribed gastroprotection from a GP if used long term.

Third-Line Drug Treatment for Osteoarthritis

Over-the-counter (OTC) opioids such as co-codamol, reserved for short-term use at the lowest effective dose due to central nervous system adverse effects and risk of dependence.