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Keppler, Alexander M.; Pfeufer, Daniel; Kau, Fabian; Linhart, Christoph; Zeckey, Christian; Neuerburg, Carl; Böcker, Wolfgang and Kammerlander, Christian (2021): Cement augmentation of the Proximal Femur Nail Antirotation (PFNA) is associated with enhanced weight-bearing in older adults. In: Injury-International Journal of the Care of the Injured, Vol. 52, No. 10: pp. 3042-3046

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Abstract

Background: An early postoperative mobilisation shows beneficial effects in terms of complications and mobilisation scores in older adult proximal femur fracture patients. An adequate load-bearing capacity of the operated extremity is essential for early mobilisation. We hypothesize that cement augmentation of the Proximal Femoral Nail antirotation (PFNA) leads to a higher load capacity during postoperative mobilisation compared to a non-cemented PFNA. Methods: Forty-nine orthogeriatric patients with pertrochanteric fractures were enrolled consecutively in a maximum care hospital in a pre-post study design (level of evidence 2). A study group of 25 patients received nailing (PFNA) with additional cement augmentation (CA group), whereas the control group of 24 patients received the same fracture fixation without cement augmentation (NCA Group). All patients participated in a gait analysis using an insole force sensor to measure the loading rate (loadsol (R), Novel, Munich, Germany) on the fifth postoperative day. Results: The NCA group showed a mean age of 75,88 years (SD +/- 9.62), the CA a mean age of 81,44 years (SD +/- 7.77). The most common fracture type was a pertrochanteric fracture in both groups (NCA: n = 20, CA: n = 21) Both groups showed no differences with regards to the ASA (NCA: 2.67;CA: 2.68) score and the postoperative Parker Mobility Score (NCA: 2.67;CA: 2.68). Patients who received cement augmenta-tion showed a significant (p = 0.004) higher loading rate in the postoperative gait analysis. The CA group showed a loading rate of 58.12% (SD +/- 14.50) compared to the uncemented PFNA group with 43.90% (SD +/- 18.34). Conclusions: Cement augmentation in elderly patients with a proximal femur fracture increased the early postoperative loading rate. Especially in frail patients with poor bone quality cement augmenta-tion should therefore be considered to enhance early mobilisation with full weight bearing in order to reduce complications and improve survival. (c) 2021 Elsevier Ltd. All rights reserved.

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