PMC5569638_01
Preoperative lateral radiographs of the (a) right knee and (b) left knee.
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For right and left sides, the Insall-Salvati ratio was 1.2 and 1.7, respectively (Figure 1).
Preoperative lateral MRI of the left knee on (a) a T1-weighted image, (b) a T2-weighted image, and (c) a short T1 inversion recovery (STIR) image. The white arrowhead indicates a rupture of the patellar tendon.
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Magnetic resonance imaging (MRI) demonstrated a rupture of the left patellar tendon at the tibial tuberosity attachment without a bone bruise or fracture (Figure 2).
(a) Intraoperative view and (b) drawing of end-to-end repair and reinforcement with a wire cerclage. (c) Postoperative anteroposterior radiograph of the left knee. (d) Postoperative lateral radiograph of left knee.
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Tokyo, Japan) by using the tendon repair technique described by Krackow et al.. This repair was reinforced using a 1.5 mm stainless steel wire (Stryker, Tokyo, Japan), which was passed around the patella and through the drill hole in the proximal tibia (Figure 3).
One year after surgery, lateral radiographs of the (a) right knee and (b) left knee.
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X-ray imaging showed the measurement of the Insall-Salvati ratio at 30 degrees of flexion was 1.2 for both knees (Figure 4).
One year after surgery, lateral MRI of the left knee on (a) a T1-weighted image, (b) a T2-weighted image, and (c) a STIR image. The white arrowhead indicates the tendinous continuity of the patellar tendon.
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The MRI confirmed tendinous continuity between the ends of the tear (Figure 5).