Dietrich Tönnis
Dietrich Tönnis (1927-2010), German paediatric orthopaedic surgeon known for the Tönnis angle, Tönnis classification, triple pelvic osteotomy and work on hip dysplasia.
Category Radiology
Perkins line
Perkins line is the vertical pelvic reference used with Hilgenreiner line in DDH assessment. Review its definition, 1928 origin, history and eponymythology
George Perkins
George Perkins (1892-1979) was an English orthopaedic surgeon known for Perkins line, Perkins traction, functional fracture treatment and British orthopaedic leadership.
CT Case 105
A 69 year old male presents with two days of atraumatic progressively worsening neck and scalp pain. Interpret the CT c-spine
Lorenz Böhler
Lorenz Böhler (1885-1973) Austrian trauma surgeon, founder of organised accident care, Böhler angle, and controversial Nazi-era figure.
Sophus von Rosen
Sophus von Rosen (1898-1996), Swedish orthopaedic surgeon. Pioneered neonatal hip screening and developed the von Rosen splint and Andrén–von Rosen view.
Andrén–von Rosen view
Andrén–von Rosen view is an abduction–internal rotation radiograph used in DDH. Review technique, von Rosen line, pitfalls and history.
Sharp angle
Sharp angle measures acetabular inclination on AP pelvic radiographs. Review the measurement, normal values, history and Ullmann–Sharp attribution.
CT Case 104
A 45 year old female presents with shoulder pain following a seizure. Describe and interpret the CT scan of her left shoulder
CT Case 103
A 35 year old male presents with recurrent episodes of spontaneous bleeding from his right ear. What does the CT angiogram show?
CT Case 102
A 52 year old man is brought to hospital by ambulance complaining of 2 weeks of abdominal pain and constipation. What does the abdominal CT show?
Köhler teardrop
Köhler teardrop is the pelvic teardrop seen on AP pelvis radiographs. Definition, anatomy, clinical use, history and eponymythology.