# Scurvy Bone Changes

> Scurvy bone changes for NEET-PG Orthopaedics cover Wimberger ring, Trümmerfeld zone, Frankel line, Pelkan spur and subperiosteal bleeding in scurvy.

- Canonical URL: https://prepelephant.com/topics/neet-pg/orthopaedics/scurvy-bone-changes
- Exam / course: NEET-PG · Subject: Orthopaedics
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-14
- Last updated: 2026-10-14
- Reference basis: Maheshwari Textbook of Orthopaedics; Harrison's Principles of Internal Medicine
- How to cite: "Scurvy Bone Changes", PrepElephant, https://prepelephant.com/topics/neet-pg/orthopaedics/scurvy-bone-changes

## Direct answer

Scurvy bone changes are the skeletal lesions of vitamin C deficiency, which impairs collagen synthesis and osteoid formation. Subperiosteal haemorrhage, the Wimberger ring, the Trümmerfeld zone and the white line of Frankel form the classic radiological set. Vitamin C replacement usually relieves the bleeding and pain quickly, while the bony changes remodel over months.

## What you must remember

- **Biochemical basis:** ascorbate is a cofactor for prolyl and lysyl hydroxylase, so collagen forms unstable triple helices and capillaries bleed easily.
- **Wimberger ring:** a dense sclerotic ring encircling the epiphysis, classically seen around the knee, where ossification is most active.
- **Trümmerfeld zone:** a transverse band of rarefaction in the metaphysis, the rubble field where poorly mineralised osteoid lies beneath the growth plate.
- **White line of Frankel:** a dense sclerotic line at the metaphyseal margin, reflecting the thickened provisional zone of calcification.
- **Pelkan spur:** a small spur of dense bone at the outer metaphyseal corner, a residual sign that can persist after healing.
- **Subperiosteal haemorrhage:** commonly around the knee and at costochondral junctions, producing pseudoparalysis and later ossifying into a palpable mass.
- **Clinical clues:** bleeding gums, perifollicular haemorrhages and corkscrew hairs support the diagnosis, which is confirmed by a low plasma ascorbate level.

## From a refusing infant to a healed metaphysis

A 14-month-old bottle-fed infant on boiled cow's milk refuses to move one leg, and the knee is swollen and tender. Radiographs and a careful diet history separate scurvy from fracture and infection.

1. **Recognise pseudoparalysis.** A limb held still, swollen and tender in an infant suggests subperiosteal haemorrhage, which must be told apart from fracture, osteomyelitis and non-accidental injury.
2. **Image the metaphyses.** Radiographs of the knee, wrist and costochondral junctions show the Wimberger ring, Trümmerfeld zone and Frankel line, which reflect defective osteoid.
3. **Take the diet history.** Prolonged boiled or evaporated milk without fruit or vegetables, or poor intake in an elderly or alcoholic patient, points to ascorbate lack.
4. **Confirm the deficiency.** A low plasma ascorbate level confirms vitamin C deficiency, and a prompt clinical response to replacement supports the diagnosis.
5. **Replace vitamin C.** Oral vitamin C in repletion doses, or parenteral if absorption is poor, usually relieves pain within days, while radiological changes remodel over weeks to months.
6. **Leave the haematoma.** Subperiosteal blood usually resorbs and ossifies, so it is rarely drained, and the limb is simply supported for comfort.

## Scurvy mimics in the examination room

Scurvy is tested through its mimics as often as through its signs.

- **Trap:** calling the infant's limb a fracture or osteomyelitis and starting antibiotics first — **Correct:** a swollen, pseudoparalysed limb with a poor diet fits scurvy, and the metaphyseal signs on radiographs settle the question.
- **Trap:** reading the Wimberger ring as a normal growth line — **Correct:** a dense ring of sclerosis encircling the epiphysis is pathological in scurvy, and it is a classic examination sign.
- **Trap:** ignoring the Pelkan spur and Frankel line after treatment — **Correct:** these residual signs help confirm a past history of scurvy when the diet history is unclear.

## Frequently asked questions

### Is any radiological sign of scurvy pathognomonic?

No single radiological sign is pathognomonic of scurvy. The Wimberger ring, Trümmerfeld zone and white line of Frankel form the classic set, and their combination with subperiosteal haemorrhage makes the diagnosis highly probable.

### What causes the Trümmerfeld zone in scurvy?

The Trümmerfeld zone is a transverse band of rarefaction in the metaphysis, where osteoid formation is defective. It reflects defective bone matrix from vitamin C deficiency rather than a fracture, and it remodels once the vitamin is replaced.

### How does infantile scurvy present, and what is Barlow disease?

Infantile scurvy, also called Barlow disease, presents with pseudoparalysis: the infant holds a painful, swollen limb still because of subperiosteal haemorrhage. The knee and lower limb are common sites, and the infant may be irritable and feed poorly.

### Why is scurvy sometimes mistaken for child abuse?

Subperiosteal haemorrhage and metaphyseal changes from scurvy can resemble non-accidental injury on radiographs. The feeding history, the pattern of bleeding and a low plasma ascorbate level help separate scurvy from abuse, and a skeletal survey should not be skipped.

### How is scurvy treated and prevented?

Vitamin C given orally, or parenterally if absorption is poor, corrects the deficiency and relieves bleeding and pain. Prevention depends on a diet with fresh fruit and vegetables, and vitamin C-fortified infant feeds reduce the risk in infants.