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High tibial flexion osteotomy for symptomatic ligamentous genu recurvatum
Christophe Trojani1, Grégoire Micicoi2, Pascal Boileau1
1Institut de chirurgie réparatrice, locomoteur & sport, 7, avenue Durante, 06000 Nice, France.
Introduction:
Symptomatic Ligamentous Genu Recurvatum (SLGR) is characterized by an asymmetrical hyperextension of the knee associated with pain and a feeling of instability occurring even during walking. The ligamentous origin of the recurvatum is linked to a sprain in hyperextension responsible for a rupture of the posterior structures that may be associated or not with a rupture of the cruciate ligaments.
Hypothesis:
Tibial Flexion Osteotomy (TFO) allows control of a SLGR without rupture of the cruciate ligaments secondary to a sprain in hyperextension.
Material And Methods:
Ten patients (12 knees) including 8 women, aged 30.8 years on average (16-52) with asymmetrical SLGR secondary to a hyperextension sprain without rupture of the cruciate ligaments underwent TFO. An anterior tibial tuberosity (ATT) osteotomy was performed with an associated trans-tuberosity anterior opening wedge osteotomy of the tibia in the sagittal plane. The ATT was secured by two compression screws with lowering of the patella culminating from the opening wedge procedure. The genu recurvatum angle (GRA), tibial slope (TSangle) and patellar height according to the Caton-Deschamps index (CDI) were established. All patients were assessed using the IKDC and Lecuire scores (anatomical and functional scores).
Results:
The average follow-up was 4.2 years (12-106 months). The GR angle was 7.3±3.2° preoperatively versus 22.7±4.1° postoperatively (p<0.01). The TS angle averaged 95.5±2.3° preoperatively versus 104.0±3.7° postoperatively (p<0.01). The CDI decreased from 1.17±0.21 preoperatively to 0.83±0.11 postoperatively (p<0.01). The IKDC and Lecuire scores improved.
Conclusion:
Trans-tuberosity high tibial flexion osteotomy is an effective strategy in cases of Symptomatic Ligamentous Genu Recurvatum without rupture of the cruciate ligaments secondary to a hyperextension sprain, and with constitutional hyperlaxity. This procedure allows significant clinical improvement and correction of the recurvatum deformity in the medium term.
Level Of Evidence:
IV, retrospective descriptive study.
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