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hemaglobin levels
Time frame: the hemaglobin levels will be registered pre-operation, then post-op day: 1, 2, 3, 4, and 5. Then at 2 weeks post-operation, 6 weeks, and 3 months
for blood loss objectification .
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leucocyte levels
Time frame: the leucocyte levels will be registered pre-operation, then post-op day: 1, 2, 3, 4, and 5. Then at 2 weeks post-operation, 6 weeks, and 3 months
for infection objectification .
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thrombocyte levels
Time frame: the thrombocyte levels will be registered pre-operation, then post-op day: 1, 2, 3, 4, and 5. Then at 2 weeks post-operation, 6 weeks, and 3 months
for blood loss objectification .
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mobilisation intervals of the patient
Time frame: through hospital stay of patient approximatively 4-7 days
the investigators will asses the time for the self-mobilisation of the patient to sit at the bed's edge, and then mobilisation with a walking aid like a walking frame. .
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joint hyperextension angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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joint flexion angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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genu flexum angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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joint external rotation angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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joint internal rotation angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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joint abduction angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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joint adduction angle
Time frame: the measurements will be registered pre-operative, then 2 weeks post-operation, 6 weeks post-op, 3 months post-op, 6 months post-op, 1 year post-op
to objectify the recovery, the measurement will be done with a measuring angle during objective evaluation. .
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Number of participants with complications
Time frame: through study completion, an average of 1 year
to objectify the superiority of one technique over the other, higher number signifies a worse outcome .