Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: General Orthopaedics
Abstract number: 24008
TIP APEX DISTANCE IN DYNAMIC HIP SCREW STILL OVERLOOKED
Parissa REZAI, Sibtain HUSSAIN
Lancaster Royal Infirmary, Lancaster (UNITED KINGDOM)
We examined the TAD in all DHS surgeries over a one year period. The TAD was
calculated using the method described by Baumgaertner MR et al through the use of
the image intensifier and the PACS (electronic radiology system). The magnification
was standardised on each independent x-ray on the image intensifier, from this the
TAD was calculated. Most of the current literature indicates that the TAD should be
less than 20 mm. Total surgeries numbered 101; we excluded 27 on the basis of not
having an AP, Lateral or both x-rays. Of the 65 included the TAD ranged from 3.0
mm to 39.6 mm. 54% percent of patients had a TAD of less than 20 mm, (15%) were
between 20.1-25.0 mm, 12% between 25.1-30.0 mm, fourteen percent (14%)
between 30.1-35.0 mm, five percent (5%) between 35.1-40.0 mm. Although no
formal follow up was made of each patient four patients had further x-rays on the
system showing cut out. TAD's were 20.5, 29.0, 31.6, 32.1mm.Our work reveals that
TAD in DHS surgery has been inadequate over the last year. Fourty five (45%) of
DHS cases had a TAD of greater than 20.0 mm. TAD remains a critical to ensure the
success of DHS surgery. It is essential all those involved in performing DHS surgery
take care to ensure TAD of less than 20 mm in DHS surgery.
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