Evaluation and comparison of clinical results of femoral fixation devices
in arthroscopic anterior cruciate ligament reconstruction
Deniz Aydin
a,
⁎, Mert Ozcan
b,1
a
Department of Orthopaedics and Traumatology, Near East University Faculty of Medicine, Nicosia, Cyprus
b
Department of Orthopaedics and Traumatology, Trakya University Faculty of Medicine, Edirne, Turkey
abstract article info
Article history:
Received 18 December 2014
Received in revised form 23 March 2015
Accepted 15 April 2015
Available online xxxx
Keywords:
Anterior cruciate ligament
Femoral fixation
Clinical results
Arthroscopic reconstruction
Background: Several femoral fixation devices for hamstring tendon autograft in anterior cruciate ligament (ACL)
reconstruction are available but the best technique is unclear.
Purpose: We hypothesized that different suspensory femoral fixation techniques have no superiority to each
other. The aim of this study is to evaluate and compare the clinical results of different suspensory femoral fixation
devices in arthroscopic ACL reconstruction.
Study design: Level III, retrospective comparative study.
Methods: 100 consecutive patients who underwent arthroscopic ACL reconstruction in a single institution with
40 months (12–67 months) mean follow-up time were divided into three groups according to femoral fixation
devices as ‘Endobutton’ (n:34), ‘Transfix’ (n:35) and ‘Aperfix’ (n:31). Length of painful period after surgery,
time to return occupation and sporting activities, final range of motion, anterior drawer and Lachman tests,
knee instability symptoms, International Knee Documentation Committee subjective knee evaluation (IKDC)
score, Short Form 36 (SF 36) score, Lysholm knee score and Tegner point of the patients were evaluated and com-
pared between groups.
Results: There were no significant differences between the groups. All techniques resulted in significant recovery
in knee instability tests and symptoms.
Conclusion: In this study, the clinical results of different suspensory femoral fixation techniques were found to be
similar. We believed that different femoral fixation techniques have no effect on clinical results as long as the
technique is correctly applied. Appropriate technique should be preferred according to surgeon's experience.
© 2015 Elsevier B.V. All rights reserved.
1. Introduction
Arthroscopic anatomical reconstruction is the current preferred sur-
gical treatment method for anterior cruciate ligament (ACL) injuries [1].
Graft choice and graft fixation methods are dependent on surgeon's
preference [2]. Graft fixation method is one of the most important is-
sues. During early postoperative period, fixation site of graft to the tun-
nel is the weakest part of the reconstruction [3]. The strength of fixation
determines the rehabilitation protocol. The initial fixation of graft must
provide sufficient strength and stiffness to avoid fixation failure and
restore stability of the knee for rehabilitation during the early postoper-
ative period [3]. Femoral graft fixation techniques with soft tissue grafts
in arthroscopic ACL reconstruction were classified by Milano et al. as
compression, expansion and suspension types [4]. Suspension type
fixation devices provide femoral fixation of the graft with a femoral
fixation device remote from the intraarticular space. The graft is
suspended over the femoral fixation device as an indirect fixation
method. Suspension type fixation devices were also divided into corti-
cal, corticocancellous and cancellous fixation methods. ‘Endobutton’ is
cortical, ‘Transfix’ is corticocancellous and ‘Aperfix’ is cancellous sus-
pensory femoral fixation devices. Postoperative X-rays of ACL recon-
struction with different femoral fixation devices are given in Figs. 1–3.
‘Endobutton’ device is formed by a button with a continuous suture
loop over it. A femoral tunnel from articular space to the cortex for the
passage of the button and a femoral socket for the graft placement is
prepared. The graft is loaded to the suture loop. The device with loaded
graft is placed from the tunnels and the button is seated over the cortex
with a flip–flap maneuver. ‘Transfix’ is a crosspin device providing
transfemoral fixation. After preparation of femoral socket, a flexible
wire is placed from lateral cortex to the medial cortex passing through
the blind end of the femoral socket with the help of ‘Transfix’ guide sys-
tem. The middle part of the flexible wire is pulled out from the femoral
socket through the tibial tunnel with the aid of guide system. The mid-
dle part of the flexible wire forms a loop outside. The graft is loaded to
the loop. The flexible wire is tensioned from both medial and lateral
The Knee xxx (2015) xxx–xxx
⁎ Corresponding author at: Department of Orthopaedics and Traumatology, Near East
University Faculty of Medicine, 99138, Nicosia, Cyprus. Tel: + 90 533 8260090;
fax: +90 392 223 64 61.
E-mail addresses: denizayd@yahoo.com (D. Aydin), mertozcan@trakya.edu.tr
(M. Ozcan).
1
Tel.: +90 533 4144819.
THEKNE-02073; No of Pages 6
http://dx.doi.org/10.1016/j.knee.2015.04.004
0968-0160/© 2015 Elsevier B.V. All rights reserved.
Contents lists available at ScienceDirect
The Knee
Please cite this article as: Aydin D, Ozcan M, Evaluation and comparison of clinical results of femoral fixation devices in arthroscopic anterior
cruciate ligament reconstruction, Knee (2015), http://dx.doi.org/10.1016/j.knee.2015.04.004