Post-Traumatic Kyphosis

The front of the spine (the vertebral bodies and discs) mainly bears weight, while the back (the ligaments and joints) acts like a tension band that resists forward bending. A fracture can damage the load-bearing front, the stabilising back, or both. If the front loses height and the back cannot hold the spine upright, the injured segment tips forward. Because the body's centre of gravity then sits further in front of the spine, the bending forces increase, which can allow the curve to worsen over time — a tendency that treatment aims to prevent or correct.

Several situations can lead to post-traumatic kyphosis. A fracture may heal in a forward-bent position, particularly if it was more unstable than initially recognised. A vertebra weakened by the injury, or by osteoporosis, may gradually collapse further. Ligament injuries at the back of the spine, which do not heal as reliably as bone, can leave a segment prone to bending. Occasionally, kyphosis follows spinal surgery. Identifying the cause helps to guide treatment and to judge whether the curve is likely to progress.

The commonest symptom is back pain, often at the apex of the curve, which is typically worse with prolonged standing or activity. Many people, or their families, notice a gradually increasing stoop or loss of height. Where the curve is severe or the spinal canal is narrowed, there may be symptoms of nerve or spinal cord pressure, such as leg weakness, numbness or difficulty walking. Some people also find the changed posture affects balance and day-to-day activities.

While post-traumatic kyphosis usually develops gradually, certain features warrant prompt medical review: new or worsening weakness, numbness or pins-and-needles in the legs, problems with balance or walking, or any disturbance of bladder or bowel control. A rapidly increasing curve or severe, worsening pain should also be assessed. These may indicate that the nerves are under pressure or that the deformity is progressing.

Assessment combines the clinical examination with imaging. Standing X-rays of the whole spine are used to measure the curve (often expressed as an angle) and to see how the spine balances overall. A CT scan gives detailed information about the healed fracture and the bone, and an MRI scan shows the discs, ligaments, spinal cord and nerves, and whether they are being compressed. Comparing images taken over time shows whether the curve is stable or progressing, which is central to the decision about treatment.

Where the curve is mild, not progressing and not pressing on the nerves, treatment is usually non-surgical. This includes pain management, physiotherapy to strengthen the muscles that support posture, activity modification, and, for related osteoporosis, treatment to strengthen the bones. Bracing may be used for symptom relief in some cases. Regular monitoring with standing X-rays checks that the curve is not worsening.

Surgery is considered when the curve is causing significant, persistent pain that has not responded to other measures, when it is progressively worsening, or when it is pressing on the spinal cord or nerves. The goal is to realign the spine, relieve any pressure on the nerves, and hold the correction with instrumentation and a fusion. Correcting an established, stiff deformity can be a major undertaking and may involve specialised techniques to reshape the spine. Because these operations carry significant risks as well as benefits, the decision is made carefully and individually.

Many people with a mild, stable post-traumatic kyphosis manage well with non-surgical care and do not need an operation. Where surgery is undertaken for the right reasons, it can relieve pain, improve posture and protect the nerves, though recovery is lengthy and the results depend on the severity of the deformity and the person's overall health. Preventing kyphosis in the first place — by recognising and adequately treating unstable injuries at the time — is an important part of trauma care.

An untreated, progressive kyphosis can lead to worsening pain, deformity and, in some cases, nerve compression. Surgical correction, while often effective, carries risks including those of major spinal surgery, and occasionally the correction can be incomplete or the deformity can recur. Careful assessment and follow-up aim to choose the right treatment and to detect any problem early.

Myth: "Once a spinal fracture has healed, nothing else can go wrong." Fact: A fracture can heal in a bent position or collapse further, leading to post-traumatic kyphosis.

Myth: "A stoop after a spinal fracture always needs surgery." Fact: Many mild, stable curves are managed successfully without surgery.

Myth: "Kyphosis is only a cosmetic problem." Fact: It can cause pain and, in some cases, pressure on the spinal cord or nerves, as well as affecting posture and balance.

This page is for general education and does not replace an individual assessment. Treatment depends on a person's specific symptoms, examination findings, imaging findings and overall health, and should always be discussed with a suitably qualified healthcare professional.

The spine has gentle natural curves. When one is exaggerated so that a section bends too far forward, it is called a kyphosis. Post-traumatic kyphosis is a kyphosis that develops as a consequence of a spinal injury — most commonly after a fracture at the junction between the chest and the lower back, where injuries are concentrated. It can arise when a fracture heals in a bent position, when a vertebra continues to collapse over time, or when an injury that was more serious than first appreciated is treated without enough support. The result is a forward curvature that may be visible as a stoop and can cause persistent pain and, in some people, pressure on the spinal cord or nerves. This page explains how post-traumatic kyphosis develops, how it is assessed, and how it is managed.

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This information is for general patient education and is not a substitute for an individual consultation. Always seek personalised advice from a qualified spinal specialist.