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Paget's Jargon Buster O - P


OA: Osteoarthritis.

Occupational therapist (OT): The professional who works with people to develop skills and confidence in everyday activities.

Open fracture: This is when the broken bone pierces the skin. Also known as a compound fracture.

Orthopaedic surgeon: A specialist doctor who carries out operations on bones, such as a hip replacement.

Orthotics: The general term for the design and the use of artificial devices such as splints, braces and insoles, designed to help patients with certain medical conditions.

Orthotist: A skilled professional who applies orthotic devices to improve function.

Osteoblast: A type of cell responsible for producing bone tissue.

Osteoclast: A type of cell that removes old bone tissue.

Osteocyte: A cell involved in the maintenance of bone. Osteocytes also regulate the functions of other bone cells.

Osteoarthritis (OA): A condition that causes the joints to become painful and stiff. It mainly affects the joint cartilage and the bone tissue next to the cartilage. It is the most common form of arthritis in the UK.

Osteonecrosis of the jaw (ONJ): A rare condition in which normal healing of the jawbone does not occur. This can happen after an invasive dental procedure, such as having a tooth removed.

Osteosynthesis: The uniting of a broken bone by mechanical means e.g., with screws and a plate.

Osteotomy: A surgical procedure in which a bone is cut and realigned (as to correct a deformity such as a bowed leg).


Paget’s Disease of Bone (PDB): Paget’s disease is characterised by abnormalities in the bone’s renewal and repair process (known as remodelling). It is often simply known as Paget’s disease.

PDB: Paget’s Disease of Bone.

Picture frame vertebrae: This refers to how Paget’s disease may appear on an x-ray when bones (vertebrae) in the spine appear thickened due to Paget’s disease.

Pathological fracture: A fracture caused by a disease, rather than injury

Pathology: The study of disease processes and the name given to any tissue damage due to dysfunction or disease.

Pelvis: The pelvis is the part of the body between the abdomen and the thighs. The term `pelvis` can refer to the pelvic skeleton (also known as the pelvic girdle), which is the skeleton in the lower part of the trunk. The bones form a bowl-shaped structure to which the thighbones and spine are joined

Placebo: A placebo is a substance or treatment which is designed to have no therapeutic value. The placebo effect is, for example, where a person feels their condition has improved due to taking a tablet, even though the tablet contained no active drugs.

PMH: Past Medical History.

Posterior: Toward or situated at the back. The opposite of anterior.

Primary care: Primary care services provide the first point of contact in the UK healthcare system, acting as the ‘front door’ of the NHS. Primary care includes general practice, community pharmacy and dental services.

PRN (pro re nata): As required.

Proximal: The nearest point to the body e.g. the proximal end of the femur is part of the hip joint.

Pseudofractures: The result of normal stresses on abnormal bone. It is a type of insufficiency fracture, which is a type of stress fracture.

P1NP: Type 1 procollagen peptide – a bone turnover marker. P1NP is a measure of how much bone is being made.


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