Differential diagnosis notes compiled from a clinical discussion. For reference only — not a substitute for professional medical advice.
The patient is an avid recreational ice skater who performs jumps and spins. She has been experiencing ankle soreness.
Pain is present during running, skating, and sprinting. A recent multi-day cycling trip (~90 km over two days) produced no pain, which is a diagnostically useful observation.
A GP examination identified the pain as anterior (front of ankle) and noted possible tibialis anterior tendinitis as the working hypothesis. The diagnosis is not yet confirmed — imaging has been discussed but not yet performed.
The tibialis anterior is the main tendon running down the front of the shin and across the front of the ankle. It lifts the foot (dorsiflexion) and controls it on landing. In skating, it works hard during every landing and stride recovery; in running, it absorbs load eccentrically at heel strike. It does very little during cycling — which fits the pain pattern well.
Pain or aching at the front of the ankle or along the lower shin. Worse with running and impact activities. May be tender to touch along the tendon. Can develop gradually with increased training load.
Anterior location matches examination findings. Pain with impact but not cycling is the expected pattern. Common in runners and skaters who load this tendon repetitively.
Typically responds well to relative rest, ice, and a structured rehab program. Eccentric strengthening exercises (controlled toe-lowering against resistance) are the evidence-based approach. Most cases resolve in 6–12 weeks with appropriate loading. A physiotherapist experienced in tendinopathy rehab is the ideal next step.
Bony spurs or soft tissue thickening at the front of the ankle joint, caused by repeated dorsiflexion (toe-up movement). Skaters who land jumps repeatedly can develop this over time. Located in the same anterior region as tibialis anterior tendinopathy, so the two can mimic each other.
Pain at the front of the ankle, especially at end-range dorsiflexion (deep knee bends, landing in a deep position). May feel like a pinch or block at the front of the joint.
Impingement pain is typically inside the joint and worst at end-range movement. Tendinopathy pain is along the tendon itself, slightly more superficial. X-ray can show bony spurs if present. Clinical examination by a sports physician can usually tell the two apart.
Repeated impact from jumps can cause bone stress in the lower tibia, which would present as anterior ankle/shin pain. Less likely given the GP's examination pointed to tendon rather than bone — but worth ruling out, especially if symptoms don't improve with tendinopathy management.
Localised point tenderness directly over bone (not tendon); pain reproduced with a single-leg hop; pain that worsens progressively with any weight-bearing activity.
X-ray misses approximately half of early stress fractures. MRI is the gold standard — it detects bone marrow oedema before a fracture line is visible.
A signature injury in skaters and dancers ("dancer's tendinitis"), but presents with posterior (back) and medial (inner) ankle pain — not anterior. Included here because it was considered before the pain location was clarified. The anterior location makes this unlikely.
Deep ache behind the inner ankle; pain on resisted big-toe flexion. Posterior to the medial malleolus.
X-ray and ultrasound are both bulk-billed (no out-of-pocket cost with a GP referral). MRI is around $500. The good news: the bulk-billed combination is a solid first step and should answer the key questions.
Bulk-billed · The key investigation
Excellent for confirming tendinopathy — can directly visualise the tibialis anterior tendon for thickening, tears, or inflammation. This is the investigation most likely to give you a clear answer here.
Bulk-billed · Useful complement
Won't show tendon problems, but can reveal bony spurs (relevant for impingement) and rule out obvious bone abnormalities. Worth doing since it's free — covers different ground than ultrasound.
~$500 · Keep in reserve
Shows everything — tendons, bone stress, cartilage, impingement — in one scan. Not needed upfront if the ultrasound confirms tendinopathy. Best reserved for: symptoms that don't improve after 4–6 weeks of rehab, or if the bulk-billed imaging is inconclusive.
Cycling — pain-free and good for fitness. Walking at a comfortable pace is also fine if it doesn't aggravate symptoms.
Running, sprinting, jumping, and skating. These load the tibialis anterior heavily. Doesn't mean total rest — but dial back until you have a confirmed diagnosis and a rehab plan.
For tendinopathy, "complete rest" is actually counterproductive — tendons need controlled, progressive loading to heal. The goal is to find the right level of activity: enough to stimulate recovery, not so much that it keeps aggravating the tendon. A physiotherapist can help calibrate this.
Get an ultrasound — it's the most cost-effective way to confirm or rule out tibialis anterior tendinopathy. Ask the GP for a referral specifying the tibialis anterior tendon and anterior ankle.
See a physiotherapist — ideally one experienced with tendinopathy or sports injuries. They can start a structured rehab program (eccentric strengthening) even before imaging results, and adjust the plan once the diagnosis is confirmed.
Mention the skating history to whoever does the imaging — that the patient does jumps and landings on ice. This directly affects which structures are prioritised in the report.
Reassess in 4–6 weeks. If symptoms haven't improved with rehab, that's the point to consider MRI. Persistent or worsening pain despite appropriate management is a reasonable threshold for the additional expense.