Cannulated Screw and Cable are Superior to Modified Tension Band in the Treatment of Transverse Patella Fractures
Clin Orthop Relat Res. 2011 Dec;469(12):3429-35. Epub 2011 May 15.
Tian Y, Zhou F, Ji H, Zhang Z, Guo Y.
.Source: Department of Orthopaedics, Third Hospital of Peking University, Beijing, 100191, China, firstname.lastname@example.org.
Although the modified tension band technique (eg, tension band supplemented by longitudinal Kirschner wires) has long been the mainstay for fixation of transverse fractures of the patella, it has shortcomings, such as bad reduction, loosening of implants, and skin irritation.
We conducted a retrospective comparison of the modified tension band technique and the titanium cable-cannulated screw tension band technique.
PATIENTS AND METHODS:
We retrospectively reviewed 101 patients aged 22 to 85 years (mean, 56.6 years) with AO/OTA 34-C1 fractures (n = 68) and 34-C2 fractures (n = 33). Fifty-two patients were in the modified tension band group and 49 were in the titanium cable-cannulated screw tension band group. Followup was at least 1 year (range, 1-3 years). Comparison criteria were fracture reduction, fracture healing time, and the Iowa score for knee function.
The titanium cable-cannulated screw tension band group showed improved fracture reduction, reduced healing time, and better Iowa score, compared with the modified tension band group. In the modified tension band group, eight patients experienced wire migration, three of these requiring a second operation. There were no complications in the titanium cable-cannulated screw tension band group.
The titanium cable-cannulated screw tension band technique showed superior results and should be considered as an alternative method for treatment of transverse patellar fractures.
LEVEL OF EVIDENCE: Level III, therapeutic study.
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