Immediate results of treatment periprosthetic femoral fractures after hip replacement

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Abstract

Periprosthetic fractures are one of the most serious complications after hip replacement. Nineteen periprosthetic femoral fractures operated on during the period 2011-2015 were followed-up retrospectively. Periprosthetic fractures were classified according to the Vancouver classification. The functional results were evaluated using Harrison scale. Bone healing and implant stability were evaluated clinically, on plain radiographs and computed tomography. The periprosthetic fractures in all patients occurred in the postoperative period. Time from operation until fracture varied from 2 weeks to 11 years. A wedge-shaped cemented or cementless stems were implanted during the first surgery: Versys ET, Spotorno, CPT (Zimmer, США): cementless fixation was performed in 16 (84,2%) patients, hybrid -in 2 (10,5%) and cemented fixation - in 1 (5,3%) patient. The fractures of greater trochanter were diagnosed in all patients with type A periprosthetic fractures. In type B1 periprosthetic fracture (8 patients) open reduction, cerclage wiring and internal plate osteosynthesis were applied. Loosening stems in 3 patients with type B2 fractures were replaced with Wagner cementless revision component (Wagner SL Revision Stem). Angle-stable plate osteosynthesis and cerclage wiring were also performed. Closed reduction and internal minimal invasive plate osteosynthesis were performed in patients with type C periprosthetic fractures. Bone consolidation was achieved in 18 (94,7%) patients, the average term was 14,3±5,2 weeks. The average Harris hip score in all patients 3 months after treatment was 64,9±16,7 points, and in 12 patients (63,2%) after a year - 86,5±15,9. Femoral periprosthetic fractures require a specialized approach to choosing the treatment tactic depending on the fracture type and quality of bone tissue. It is necessary to evaluate the femoral component stability, especially in differential diagnosis of type B1 and B2 periprosthetic fractures. Computed tomography is one of the necessary methods of diagnosis.

About the authors

V. V. Khominets

Kirov Military Medical Academy of the Ministry of Defense of Russian Federation

Email: fake@neicon.ru
the head of department and clinic of military traumatology and orthopedics Russian Federation

P. A. Metlenko

Kirov Military Medical Academy of the Ministry of Defense of Russian Federation

Author for correspondence.
Email: +79052274723@yandex.ru
the head of orthopedic department Russian Federation

A. N. Bogdanov

Kirov Military Medical Academy of the Ministry of Defense of Russian Federation

Email: fake@neicon.ru
assistant Russian Federation

A. L. Kudyashev

Kirov Military Medical Academy of the Ministry of Defense of Russian Federation

Email: fake@neicon.ru
deputy head of the department and clinic of military traumatology and orthopedics Russian Federation

F. V. Miroevsky

Kirov Military Medical Academy of the Ministry of Defense of Russian Federation

Email: fake@neicon.ru
the orthopedic surgeon, the department of military traumatology and orthopedics Russian Federation

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