Suture repair of patellar inferior pole fracture: Transosseous tunnel suture compared with anchor suture

Huang,Wenzhou; Wu,Tianlong; Wei,Qiangqiang; Peng,Longhai; Cheng,Xigao; Gao,Guicheng

doi:10.3892/etm.2021.10430

Suture repair of patellar inferior pole fracture: Transosseous tunnel suture compared with anchor suture

Authors:
- Wenzhou Huang
- Tianlong Wu
- Qiangqiang Wei
- Longhai Peng
- Xigao Cheng
- Guicheng Gao
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Affiliations: Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
Published online on: July 15, 2021 https://doi.org/10.3892/etm.2021.10430
Article Number: 998
Copyright: © Huang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Patellar inferior pole fracture is difficult to treat due to the inherent weakness of small comminuted distal fragments. However, suture fixation was recently introduced and reported. The aim of the present study was to evaluate and compare the clinical outcomes of two suture techniques, transosseous tunnel suture (TTS) and anchor suture (AS), for the fixation of patellar inferior pole fracture. A total of 35 patients with patellar inferior pole fracture treated at the Second Affiliated Hospital of Nanchang University (Nanchang, China) between June 2014 and April 2018 were retrospectively reviewed. Of these, 14 were treated with the TTS technique and 21 using AS fixation. The operation time, incision length and total cost were determined and compared. Functional outcomes were analyzed with the visual analog scale (VAS), Bostman and Lysholm scores and knee joint ranges of motion (ROMs). Postoperative complications were also observed and recorded. The mean follow‑up was 22.6±9.7 and 18.7±5.9 months for TTS and AS, respectively. The groups were similar regarding age, sex, operative side and time to surgery. A smaller incision length and shorter operation time but higher hospital costs were observed in the AS group (P<0.01). For functional evaluation, there was no significant difference in VAS, Bostman and Lysholm scores or ROM between the 2 groups (P>0.05). No postoperative complications were observed in the TTS group. Only one patient in the AS group experienced a superficial minor wound infection. The TTS and AS techniques provided similarly satisfactory clinical outcomes for treating patellar inferior pole fracture. TTS had the advantage of cost‑effectiveness due to saving anchors, while AS had a shorter operation time and a smaller incision length.

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