von Rüden Christian, Brand Andreas, Perl Mario
Abteilung Unfallchirurgie, BG Unfallklinik Murnau, Murnau, Deutschland.
Universitätsinstitut für Biomechanik, Paracelsus Medizinische Privatuniversität, Salzburg, Österreich.
Oper Orthop Traumatol. 2023 Apr;35(2):110-120. doi: 10.1007/s00064-023-00800-2. Epub 2023 Mar 16.
The pararectus approach was rediscovered several years ago for pelvic surgery and described as an alternative approach especially for the treatment of acetabular fractures of the anterior column involving the quadrilateral plate.
For optimal visualization of acetabular fractures involving the quadrilateral plate, fractures of the anterior wall and anterior column, anterior column/posterior hemitransverse fractures, and fractures with central impression of dome fragments, the pararectus approach has proven to be a useful access.
The pararectus approach is not used for posterior column fractures, posterior wall fractures, combined posterior wall and posterior column fractures, transverse fractures with displaced posterior column or in combination with posterior wall fractures, and T‑fractures with displaced posterior column or in combination with posterior wall fractures.
The entire pelvic ring, including the quadrilateral plate, can be accessed via the pararectus approach. The choice of the correct surgical window depends on the fracture location and the requirements of fracture reduction.
In general, partial weight-bearing should be maintained for 6 weeks, although earlier weight-bearing release may be possible if necessary, depending on fracture pattern and osteosynthesis. Particularly in geriatric patients, partial weight-bearing is often not possible, so that early and often relatively uncontrolled full weight-bearing has to be accepted.
In a comparative gait analysis between patients following surgical stabilization of an isolated unilateral acetabular fracture through the pararectus approach and healthy subjects, sufficient stability and motion function of the pelvis and hip during walking was already evident in the early postoperative phase.
腹直肌旁入路在数年前被重新发现可用于骨盆手术,并被描述为一种替代入路,尤其适用于治疗累及四边形板的髋臼前柱骨折。
对于累及四边形板的髋臼骨折、前壁和前柱骨折、前柱/后半横行骨折以及伴有穹顶碎片中央凹陷的骨折,腹直肌旁入路已被证明是一种有效的入路。
腹直肌旁入路不适用于后柱骨折、后壁骨折、后壁和后柱联合骨折、伴有后柱移位的横行骨折或合并后壁骨折的情况,以及伴有后柱移位或合并后壁骨折的T形骨折。
通过腹直肌旁入路可以显露整个骨盆环,包括四边形板。正确手术窗口的选择取决于骨折部位和骨折复位的要求。
一般来说,应保持部分负重6周,不过根据骨折类型和内固定情况,如有必要,可更早解除负重。特别是老年患者,往往无法进行部分负重,因此不得不接受早期且通常相对不受控制的完全负重。
在一项对通过腹直肌旁入路进行孤立性单侧髋臼骨折手术固定的患者与健康受试者的步态对比分析中,术后早期即可明显看出骨盆和髋关节在行走时有足够的稳定性和运动功能。