Preliminary report on amputation versus reconstruction in treatment of tibial hemimelia

Year 2015, , 627 - 633, 28.10.2015

Halil İbrahim Balci Yavuz Saglam , Fuat Bilgili Cengiz Sen Mehmet Kocaoglu Levent Eralp

https://doi.org/10.3944/AOTT.2015.15.0005

Abstract

Objective: Tibial hemimelia is a rare disorder characterized by the absence or hypoplasia of the tibia with associated rigidity. The aim of this study was to retrospectively evaluate the affectivity of reconstructive surgeries including centralization of the knee-ankle joints and lengthening with Ilizarov principles, as well as physical and functional results of amputation and reconstruction.
Methods: This is an IRB-approved retrospective review of all patients diagnosed with tibial hemimelia who required surgery at a single institution between 1998 and 2011. Charts were analyzed for clinical and radiographical findings. At final follow-up, patients underwent physical and radiographic examination. Patients and their parents were asked to complete the SF-10™ health survey (QualityMetric Inc., Lincoln, RI, USA).
Results: Twenty-one patients (12 male, 9 female) with 30 affected extremities were included. Mean age was 4.8±3.1 years at initial surgery. Knee level disarticulation was performed in 6 extremities of 4 patients. One patient with type III underwent transtibial amputation. Mean number of surgeries for each patient was 6.4±3.3, and mean duration of external fixator and casting was 17±6 months. Mean lengthening was 4.9±1.3 cm, and mean limb length discrepancy was 3.1±1.7 cm at 5.8±3.7 years at follow-up. SF-10™ scores were similar in disarticulated and reconstructed patients (p=0.63). All scores were significantly higher when disarticulation was performed in cases of knee instability (p<0.01).
Conclusion: When stability of the knee joint is present, treatment modality should be chosen according to the existence of the proximal tibia. Amputation should be preferred in cases of knee joint instability.

Keywords

Amputation, external fixation, knee centralization, reconstruction, SF-10™, tibial hemimelia

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