The Hip - book

DCP, 3.5 mm Applied as a Self Compression Plate

– See: DCP 3.5 mm Applied as Self Compression Plate w/ Lag Screw Thru Plate – Discussion:     – effect of self compression is used for axial compression of short oblique, or transverse frxs of for example, the forearm, clavicle, and           pelvis (tension band plating); – Prerequisites:     – plate is contoured to the … Read more

DDH: 6 to 24 months of age

– Discussion:     – Pavlik harness is usually not successful in children > 6 months (crawling age);           – this is mainly due to increased activity levels of the child as well as the fact that these children begin to learn how to remove the harness;     – reduction of … Read more

DDH: Non-Anatomic Positioning of the Acetabulum in THR

– See:       Total Hip Replacement Menu:            – total hip in DDH            – acetabular component menu:            – crowe classification – Non Anatomic Positioning of the Acetabulum in DDH: (high hip center)     – advantages:           – technically easier than anatomic placement;           – surgeon can … Read more

Femoroacetabular Impingement (FAI)

Co-Authors:  Milford H. Marchant Jr., M.D.; Thomas P. Vail, M.D.; Steven A. Olson, M.D. July 2006 Femoroacetabular Impingement (FAI)        – Descriptive Diagnosis characterized by a combination of clinical signs, symptoms, and pathology that may be responsible for the progression of degenerative changes in patients with osteoarthritis of the hip        – … Read more

CE Angle of Wiberg

(See: Radiographic Features of DDH) Discussion CE angle provides useful information after the age of 5 years (may be used in adults); angle formed by a line drawn from the center of the femoral head to the outer edge of the acetabular roof, and a verticle line drawn through the center of the femoral head; angle … Read more

Cast Treatment of Tibial Fractures

– Indication for Closed Treatment:    – indications — These are based on “personality” of the fracture as described by Nicoll EA (1964)           –  he listed factors favoring union:           – displacement: if the fracture fragments on are or can be opposed to 25% in a transverse fracture, casting or bracing is permissible             – more than 50% initial frx … Read more

Burst Fracture of Spine

            – Discussion: – fall from a height, landing on one’s feet, is typical of this fracture; – burst frx involve only compressive failure of vertebral body both anteriorly & posteriorly, w/ failure of both anterior & middle columns; – axial loading applied to intravertebral disc results in increased nuclear pressure and … Read more

Bucholz Classification

Discussion based on the assessment of stability; lesions are graded as Type I, Type II, or Type III depending on degree of instability; Bucholz noted that on postmortem dissection of pts w/ pelvic fractures that all injuries to pelvic ring had some injury to both anterior and posterior portions of the pelvis; Type I injuries for which the … Read more