The upper back is between the top of the lumbar spine and the neck and consists of thoracic vertebrae. The upper back is very strong and stable to support body weight and to anchor the rib cage which provides a cavity to allow the heart and lungs to function and protect them.

Above: Mobilisations of the upper thoracic spine by experienced physiotherapist
The most common upper back injuries the physiotherapists at Physio.co.uk see are:

Above: Taping to correct posture and support muscle applied by therapist

Above: Mobilisations of the mid thoracic spine
Other less common injuries include:

Above: Soft tissue massage of the upper thoracic spine by specialist therapist