Sprain & Injury
Symptoms, Causes & Treatment
Understanding sprains and soft tissue injuries: how to grade severity, apply RICE correctly, and know when to go to A&E for an X-ray.
What Is a Sprain?
Sprains are injuries to ligaments caused by sudden stretching or tearing forces, most commonly affecting the ankle, knee, and wrist. They are among the most common injuries seen in primary and emergency care.
The key clinical decision is whether a fracture is present — the Ottawa Ankle and Foot Rules provide a validated, evidence-based framework for determining when an X-ray is needed. Most sprains are Grade 1–2 and heal with RICE and physiotherapy within 6–8 weeks.
What Are the Symptoms of a Sprain?
Sprain symptoms vary by grade and joint affected. Distinguishing a sprain from a fracture is the priority clinical assessment.
Pain, swelling, bruising at injury site · Joint instability or giving way · Reduced range of movement · Difficulty weight bearing · Tenderness on palpation · Muscle spasm around injury
Inability to weight bear on ankle or foot after injury (Ottawa rules — possible fracture, attend A&E) · Suspected ligament rupture · Suspected fracture (visible deformity, point tenderness) · Neurovascular compromise distal to injury
Apply the Ottawa Ankle Rules: if you cannot weight bear on the foot AND have bony tenderness at the posterior or inferior malleolus or base of 5th metatarsal, you need an X-ray. Attend A&E or urgent care today.
What Causes Sprains & Soft Tissue Injuries?
Sprains and soft tissue injuries occur from sudden excessive force on a ligament or joint. The severity determines management, from RICE to surgery.
Ligament sprains are graded by severity: Grade 1 = stretching without rupture; Grade 2 = partial rupture with instability; Grade 3 = complete rupture. ATFL (anterior talofibular ligament) is the most commonly injured ankle ligament.
Muscle strains occur when muscle fibres are overstretched or torn. Grade 1 = mild stretch; Grade 2 = partial tear; Grade 3 = complete rupture. Eccentric muscle loading during sprinting, jumping, or lifting is the most common mechanism.
Non-specific low back pain (no identifiable cause) accounts for 85% of presentations. Disc herniation, facet joint degeneration, and muscle/ligament strain are the most common structural causes. Poor posture and sedentary lifestyle are key contributors.
RICE (Rest, Ice, Compression, Elevation) is the first-line management for acute muscle strain in the first 48–72 hours. Aim to return to gentle movement within 2–3 days to prevent muscle atrophy and stiffness.
Osteoarthritis (OA) causes progressive loss of articular cartilage, subchondral bone remodelling, and osteophyte formation. It is the most common cause of chronic joint pain in adults over 50, affecting knees, hips, hands, and spine.
Septic arthritis is a medical emergency caused by bacterial infection of a joint (most commonly Staph aureus). It causes rapid joint destruction and can be fatal. A hot, red, swollen joint with fever always requires emergency joint aspiration.
Key Risk Factors
How Is a Sprain or Soft Tissue Injury Diagnosed?
Clinical assessment using Ottawa rules determines whether X-ray is needed. MRI is used for ligament rupture or when surgery is being considered. Ultrasound identifies partial tears.
How Is a Sprain Treated?
Most sprains are managed conservatively. RICE, analgesia, and physiotherapy form the foundation of treatment. Surgery is reserved for Grade 3 complete ruptures with persistent instability.
Supportive Measures
RICE for the first 48–72 hours is the evidence-based first response. After 72 hours, transition from ice to heat to promote blood flow and healing. Compression bandaging reduces swelling. Start range-of-motion exercises as soon as pain allows — immobilisation beyond 3–5 days slows recovery.
Recurrent Instability After Sprain
Recurrent ankle instability after Grade 3 sprain may require Brostrom ligament reconstruction surgery. Chronic pain after sprain may indicate a missed osteochondral fracture — MRI or CT arthrogram should be considered. Physiotherapy-led proprioception retraining significantly reduces recurrence risk for ankle sprains.
When Should You Seek Medical Advice for a Sprain or Injury?
Inability to weight bear on foot or ankle after injury with bony tenderness (Ottawa rules positive — attend A&E for X-ray) · Suspected fracture or dislocation · Neurovascular compromise (pale, cold, numb limb after injury).
Cannot weight bear on ankle or foot after injury · Suspected fracture or complete ligament rupture · Recurrent ankle sprains causing instability · Injury not improving after 6–8 weeks · Significant knee ligament injury with instability.
How to Prevent Sprains & Injuries
Most sprains can be prevented through appropriate warm-up, proprioception training, and adequate recovery between activities.
Proprioception (balance) retraining after ankle sprain significantly reduces recurrence risk. Simple exercises: single-leg standing, wobble board training — start while holding support and progress to unsupported over 4–6 weeks.
Warm up adequately before exercise and cool down after. Increase training load gradually (the 10% rule). Strengthen muscles around vulnerable joints (glutes for knee, rotator cuff for shoulder, core for back) to reduce injury risk.
Know back pain red flags: bladder or bowel changes, saddle numbness, leg weakness, fever, unexplained weight loss, history of cancer. Any of these require same-day emergency assessment, not a routine appointment.
Staying active is the single most important thing you can do for back pain. Bed rest delays recovery. Walking, swimming, and gentle stretching keep muscles from weakening. Aim to return to normal activities as soon as pain allows.
Weight management reduces load on weight-bearing joints. Every 1kg of body weight loss reduces knee joint loading by 4kg. Low-impact exercise (swimming, cycling) maintains fitness without joint stress.
Supportive footwear with good arch support and cushioning is the most important non-pharmacological treatment for plantar fasciitis. Avoid walking barefoot on hard floors, especially in the morning. Replace sports shoes every 500 miles.
Speak to a Clinician About Sprains and Injuries
Through The GP Service, a licensed clinician can assess your sprain or soft tissue injury, advise on Ottawa rules and need for X-ray, and arrange physiotherapy referral.
Expert clinical advice, when you need it.
Sprain & Injury FAQs
Most ankle sprains heal within 6–8 weeks. Grade 1 (stretching) and Grade 2 (partial tear) injuries resolve with physiotherapy and graded return to sport. Grade 3 (complete ligament rupture) may require immobilisation or, rarely, surgery. Proprioception training is essential to prevent recurrence — recurrent ankle sprains dramatically increase long-term instability and OA risk. If you cannot weight bear after an ankle injury, apply the Ottawa rules: inability to weight bear plus bony tenderness at the malleolus warrants an X-ray to exclude fracture.
Most back pain is non-specific — caused by muscle, ligament, or disc strain without any serious underlying cause. The vast majority resolves within 4–6 weeks. Key red flags to watch for: bladder or bowel changes (possible cauda equina syndrome — call 999), fever, unexplained weight loss, or pain that is unrelenting at night regardless of position. If none of these are present, staying active, taking regular analgesia, and seeing a physiotherapist is the most effective approach.
Bed rest is not recommended and actually slows recovery. Staying as active as pain allows — walking, gentle stretching, swimming — helps the back heal faster. Most non-specific back pain improves within 4–6 weeks with movement, NSAIDs, and physiotherapy. Seeing a physiotherapist early produces better outcomes than waiting. If back pain has not improved after 6 weeks, or is worsening, a GP review is warranted to consider imaging and further management.
Joint pain with a hot, red, severely swollen joint and fever is a red flag for septic arthritis — a surgical emergency. This requires same-day joint aspiration and IV antibiotics. Joint pain without these features requires investigation to determine the cause: OA, RA, gout, or reactive arthritis. Getting the right diagnosis quickly matters because RA causes joint erosion within weeks to months of onset, and early DMARD treatment dramatically reduces long-term disability.
OA affects cartilage and causes pain that worsens with use and eases with rest. RA is an autoimmune disease causing symmetrical synovial inflammation, morning stiffness >1 hour, systemic symptoms, and elevated inflammatory markers. RA gets worse without treatment and causes irreversible joint destruction; OA does not have systemic consequences. Getting the right diagnosis early is important because the treatments are completely different. If you have morning stiffness lasting over an hour and symmetrical joint swelling, see a clinician urgently for RA screening.
Sciatica is caused by compression of the sciatic nerve or its nerve roots — most commonly from a disc herniation at L4/5 or L5/S1. Around 80–90% of sciatica resolves within 6–12 weeks with conservative management: staying active, NSAIDs, physiotherapy, and nerve pain medication if needed. Red flags requiring emergency assessment: loss of bladder or bowel control, saddle numbness, or rapidly progressive leg weakness. These could indicate cauda equina syndrome, which is a surgical emergency.
Gout attacks are caused by a sudden deposition of uric acid crystals in the joint. They are excruciatingly painful, typically beginning at night, affecting the big toe, ankle, or knee. Most attacks settle within 7–14 days. Short-term treatment with NSAIDs, colchicine, or prednisolone brings rapid relief. Urate-lowering therapy with allopurinol prevents recurrent attacks and is very effective. Gout is entirely manageable — it is not something that has to be simply endured.
Most rotator cuff problems — tendinopathy, partial tears, and impingement — respond well to physiotherapy. A targeted physiotherapy programme addressing rotator cuff strength and scapular control resolves 70–80% of cases within 3–6 months. Steroid injection provides short-term relief but does not improve long-term outcomes. Full-thickness rotator cuff tears with significant weakness warrant MRI assessment and possible surgical repair, especially in younger or active patients. Frozen shoulder runs a natural history of 1–3 years and usually resolves fully without surgery.