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Paediatric Orthopedic Cases

Ten children's orthopaedic cases — clubfoot, hip dysplasia, growth-plate injuries — where growing bones change all the rules.

Patient privacy: All cases are anonymised composites drawn from routine clinical practice. Ages, occupations and identifying details have been altered. Content is educational and is not a substitute for professional medical advice — see our medical disclaimer.

Case 1: Clubfoot in a Newborn — The Ponseti Method

A 5-day-old boy was brought with bilateral clubfoot (congenital talipes equinovarus). Treatment began that week with the Ponseti method: gentle weekly manipulation and long-leg casting. After five casts the feet were corrected except for equinus, addressed with a 5-minute percutaneous Achilles tenotomy, followed by boots-and-bar bracing to prevent relapse.

Management

Weekly Ponseti casting ×5, percutaneous tenotomy, foot-abduction brace (23 hrs/day for 3 months, then nights until age 4).

Outcome

Plantigrade, flexible, pain-free feet; walking on time at 14 months.

Teaching point: Ponseti casting corrects over 95% of clubfeet without major surgery — but the brace phase is where success is won or lost. Parental counselling is half the treatment.

Case 2: Developmental Dysplasia of the Hip — Caught at 3 Months

A 3-month-old girl (breech delivery, positive family history — both major risk factors) had limited hip abduction on routine check. Ultrasound confirmed a dislocated left hip (Graf IV). She was treated in a Pavlik harness, which holds the hips flexed and abducted so the femoral head remodels the socket while the child kicks freely.

Management

Pavlik harness full-time 10 weeks with ultrasound monitoring, then weaning.

Outcome

Concentric, stable hip; normal X-ray at 1 year; walking normally.

Teaching point: DDH caught before 6 months is a harness; caught at 18 months it is major surgery; caught at 30 it is a hip replacement. Screening breech and family-history babies changes lives.

Case 3: Limping 6-Year-Old — Perthes Disease and the Art of Containment

A 6-year-old boy limped painlessly for a month with occasional knee ache — a reminder that children's hip disease often presents as knee pain. X-rays showed Perthes disease (avascular necrosis of the growing femoral head). At his age with less than half the head involved, treatment was containment by non-operative means: activity restriction and physiotherapy to keep the hip mobile while the head revascularises over 2–3 years.

Management

Activity modification, abduction stretches, swimming, serial X-rays every 4 months.

Outcome

Healed spherical head at age 9; full sport allowed.

Teaching point: Perthes outcomes depend on age and the femoral head's shape at healing. Young children with partial head involvement mostly need supervision, not surgery — and every limping child needs a hip examination.

Case 4: Slipped Capital Femoral Epiphysis in an Overweight 13-Year-Old

A 13-year-old overweight boy had three weeks of thigh pain and an out-turned foot; X-rays (frog-lateral view — the key image) showed a stable slipped capital femoral epiphysis. The femoral head was fixed where it lay with a single percutaneous screw the next morning — SCFE is fixed urgently to prevent further slip and the dreaded avascular necrosis.

Management

In-situ single cannulated screw fixation; protected weight-bearing 6 weeks. Endocrine screen normal.

Outcome

Pain-free with full activity at 3 months; contralateral hip monitored.

Teaching point: Any adolescent with knee or thigh pain must have the hip imaged — SCFE is the classic missed diagnosis, and delay converts a 20-minute screw into a lifetime of hip disease.

Case 5: Greenstick Forearm Fracture — Bones That Bend

A 7-year-old fell off her bicycle; X-rays showed greenstick fractures of the radius and ulna with 20° angulation — the bone bent and cracked on one side only, as young bone does. Under sedation, the fracture was gently corrected and an above-elbow cast applied. Children's bones remodel: alignment need not be perfect, only acceptable for age.

Management

Closed reduction under sedation, moulded above-elbow cast 5 weeks with weekly X-rays for 2 weeks.

Outcome

United and remodelling well; full function at 8 weeks.

Teaching point: A child's fracture close to the growth plate, in the plane of joint motion, remodels remarkably — surgical perfection is rarely needed. But weekly early X-rays catch the few that re-displace.

Case 6: Pulled Elbow — The 30-Second Cure

A 2-year-old girl suddenly stopped using her arm after her mother pulled her up by the wrist. She held the arm slightly flexed and would not supinate — a classic pulled elbow (radial head subluxation). With the annular ligament reduced by a quick supination-flexion manoeuvre, she was using the arm to reach for a toy within minutes. No X-ray, no cast.

Management

Supination-flexion reduction manoeuvre in the clinic.

Outcome

Immediate full use of the arm; parents taught to avoid lifting by the wrists.

Teaching point: Pulled elbow is a clinical diagnosis with a clinical cure. The only trap: if there was a fall or there is swelling or bony tenderness, X-ray first — a fracture can masquerade as one.

Case 7: Acute Haematogenous Osteomyelitis — 48 Hours That Saved a Tibia

A 9-year-old boy had two days of fever and refusal to walk, with exquisite tenderness over the upper tibia. Blood markers were high; MRI confirmed early osteomyelitis without abscess. IV antibiotics begun within hours (after blood cultures) aborted the infection — the window before pus forms is short, and he had arrived inside it.

Management

IV cloxacillin + ceftriaxone 5 days → oral 4 weeks, guided by cultures (MSSA) and CRP.

Outcome

Walking pain-free at 2 weeks; normal X-rays and markers at 3 months.

Teaching point: In a febrile child who won't bear weight, think bone and joint infection first. Caught before abscess formation, osteomyelitis is a medical disease; caught late, it is a surgical one with lifelong consequences.

Case 8: Septic Arthritis of the Hip in an Infant — A Same-Day Operation

An 11-month-old girl had fever, an immobile left leg held flexed and abducted, and scream-on-movement of the hip. Ultrasound showed a joint effusion; aspiration returned frank pus. The hip was opened and washed out within hours — in septic arthritis, articular cartilage is being digested by the hour, and the infant hip additionally risks head necrosis from pressure.

Management

Emergency arthrotomy, lavage, IV antibiotics 2 weeks → oral 4 weeks.

Outcome

Normal hip motion at 6 months; X-ray surveillance until age 5 planned.

Teaching point: Septic arthritis of the hip is one of the very few emergencies where hours matter in an infant. Kocher's criteria help, but a high suspicion and an ultrasound-guided aspiration settle it.

Case 9: Bowlegs at 2 Years — Physiological or Blount Disease?

Anxious parents brought a 2-year-old with bowlegs. Symmetric bowing, normal height, and no lateral thrust on walking suggested physiological genu varum, which peaks around age 2 and self-corrects. X-rays confirmed no beaking of the medial tibial epiphysis (which would indicate Blount disease). Reassurance and a review at age 3 were the entire treatment.

Management

Clinical + radiographic assessment, reassurance, review at 12 months.

Outcome

Legs straightened spontaneously by age 3½.

Teaching point: Most bowlegs and knock-knees in toddlers are normal development. The flags for pathology: asymmetry, short stature, progression after age 3, lateral thrust — those need X-rays and follow-up, the rest need reassurance.

Case 10: Pathological Fracture Through a Bone Cyst — Let It Heal, Then Treat

A 10-year-old boy fractured his upper humerus with a trivial throw; X-rays revealed the fracture ran through a simple (unicameral) bone cyst — a benign fluid-filled cavity. The fracture was treated in a sling and, interestingly, the fracture itself sometimes heals the cyst. When the cyst persisted after union, it was treated with percutaneous injection rather than open surgery.

Management

Sling 4 weeks for the fracture; persistent cyst treated with aspiration + injection at 4 months.

Outcome

Cyst consolidated over a year; full sport allowed.

Teaching point: A fracture from trivial force in a child means a look at the underlying bone. Simple cysts are benign and often minimally treated — the priority is distinguishing them from the rare tumour that is not.

Explore More Cases

This series is part of the OrthoChronicles Surgical Case Library — 50 real-world cases across trauma, joint replacement, spine, paediatric and sports orthopaedics.