Total Knee Arthroplasty with Intra-Articular Resection of Bone for Knee Arthritis Secondary to Malunion of a Tibial Shaft Fracture: A Radiological Evaluation of Correction of the Tibial Deformity

Autor: Hsin-Nung Shih, Po-Chun Lin, Jun-Wen Wang, Shih-Hsiang Yen, Guan-Fang Chen
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: BioMed Research International
BioMed Research International, Vol 2021 (2021)
ISSN: 2314-6141
2314-6133
Popis: This retrospective study was aimed to evaluate the clinical outcome and the extent of correction of the tibial deformity by a radiological evaluation following total knee arthroplasty (TKA) combined with intra-articular bone resection, in patients with knee arthritis and ipsilateral malunited tibial fractures. Fifteen patients (15 knees) with severe arthritis of the knee and extra-articular malunion of the tibia were treated using TKA with intra-articular bone resection. The extra-articular deformities in the coronal plane were 10 tibia vara (mean 15°, range 9°-30°), 4 tibia valgum (mean 12°, range 6°-20°), and one double deformity in the tibial shaft. The follow-up duration was 84 months (24–240). At the last follow-up, the mean Knee Society knee and function scores had improved, respectively ( p = 0.001 ). The mean arc of knee motion improved from 97° preoperatively to 118.3° at the last follow-up ( p < 0.001 ). The mean mechanical axis improved from a preoperative 15.5° to 1.5° of varus ( p = 0.013 ). Excluding the patient with a double tibial malunion, in the 10 patients with varus tibial angulations, the tibia vara had improved from 15° preoperatively to 2.6° ( p = 0.005 ). There were no observed complications except for one with a postoperative deep infection. In conclusion, our results indicated that TKA with intra-articular resection of the bone is an effective procedure for the treatment of severe arthritis of the knee with extra-articular malunion of the tibia in the coronal plane (≤30° of varus; ≤20° of valgus).
Databáze: OpenAIRE
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