PMC10152964_01
X-ray face and profile of the knee arthrodesis.
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F1
In the ipsilateral leg, she had a previous knee arthrodesis, as a result of a traffic accident during childhood (Fig. 1).
Supine X-ray of the pelvis face, with the left-sided coxarthrosis.
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F2
Radiographs of the pelvis and the left hip showed left hip osteoarthritis (Fig. 2).
Per-operative positioning of the leg.
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F3
The ipsilateral leg was moved in adduction and external rotation and was carefully positioned on the cushion under the contralateral leg (Fig. 3).
Post-operative leg length.
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F4
Even if it would have been possible, attention would have been paid not to have an equal leg length, which could lead to difficulties during the swing phase as result of the knee arthrodesis (Fig. 4) Finally, a flat tapered wedge cemented stem (Taperloc  - ZimmerBiomet, Inc, Warshaw, IN), with a 32 mm ceramic head (Biolox Delta , CeramTec, Germany).
Post-operative supine X-ray pelvis.
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F5
Post-operative X-rays showed satisfactory position of the hybrid hip replacement (Fig. 5).