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Orthopaedic surgery deals with disabilities in bones, joints, muscles, tendons, and nerves. Learn about symptoms, examination methods, causes of deformities, terminology, operations, fractures, and healing processes. Understand fracture patterns, types, complications, and how fractures happen.
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Musculoskeletal Principals and Terminology Dr J G Myburgh
Orthopaedia ORTHOS (Straight) + PAIS (Child)
Orthopaedic Surgery Deals with disability in: • Bones • Joints • Muscles • Tendons • Nerves
Orthopaedic Surgery • Congenital and developemental abnormalities • Infections • Artritis and rheumatic disorders • Metabolic and endocrine disorders • Tumors and pseudo tumors • Sensory disturbance and muscle weakness • Injury and mechanical derangement
Symptoms • Pain • Stiffness • Swelling • Deformity • Weakness • Instability • Sensory change • Loss of function
Examination • Look -Skin -Shape -Position • Feel -Skin -Soft tissue -Bones and joints • Move - Active - Passive - Abnormal
Muscle power • Grade 0 – no movement • Grade 1 – flicker • Grade 2 – gravity eliminated • Grade 3 – against gravity • Grade 4 – against resistance • Grade 5 – normal power
Causes of Bone Deformity • Congenital (pseudarthrosis) • Bone softening (rickets) • Displasia (multiple exostosis) • Growth plate injury • Fracture malunion • Paget’s disease
Causes of Joint deformity • Skin contracture • Fascial contracture • Muscle contracture • Muscle imbalance • Joint instability • Joint destruction
Terminology • Coxa - Hip • Genu – Knee • Pes – Foot • Hallux – Big toe • Pollices - Thumb
Operations on bones Bones can be: • Cut (Osteotomy) • Joined (Osteosynthesis) • Grafted • Lengthened • Drained
Operations on ligaments Ligaments can be: • Repaired • Reconstructed • Shortened
Operations on nerves Nerves can be: • Decompressed • Sutured • Grafted • Epineurolysis
Nerve injury • Neurapraxia- caused by a focal lesion, usually demyelinating, and followed by a complete recovery • Axonotmesis- • Neurotmesis
Fractures Complete or incomplete break in the continuity of bone, associated with an open or closed soft tissue injury of varying severity.
How Fractures Happen • Single traumatic event • Repetitive stress • Abnormal weakening of bone
Trauma • Twisting • Compression • Bending • Tension • Avulsion
Fracture displacement • Translation • Angulation • Rotation • Length (shortening/impaction)
Fracture complications • Vascular injury • Haemarthrosis • Compartement syndrome • Nerve injury • Infection • Fat embolism • Visceral injury