Autogenous iliac crest graft and temporary intersegmental pe
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When symptomatic spondylolysis fail to respond to nonoperative treatment, surgical management may be required. A number of techniques have been described for repair by intrasegmental fixation with good results. The aim of present study is to assess the clinical outcomes of L5 symptomatic spondylolysis with this technique.

A retrospective analysis of 128 patients with L5 spondylolysis treated with this method was performed. According to CT scan, the spondylolysis were classified into 3 categories: line, intermediate, and sclerosis type. The diagnostic block test of L5 bilateral pars defect was done in all patients preoperatively. The sagittal and axial CT images were used to determine the bone union.

The healing time, complications, number of spina bifida occulta, Japanese Orthopedic Association (JOA) score, and VAS for back pain were recorded. After fixation removal, the rate of ROM preservation at L5S1 was calculated.

Results:
--There were 97 patients (194 pars) followed with mean follow-up of 23 months (range, 12–36 months).

--The union rate of pars was 82.0% at 12 months and 94.3% at 24 months postoperatively.

--Low back pain VAS significantly improved from preoperative mean value of 7.2 to 1.3 at the final follow-up postoperatively.

--JOA score increased significantly postoperatively with average improvement rate of 79.3%.

--The rates of L5S1 ROM preservation were 79.8% and 64.0% after fixation removal at 1 and 2 years postoperatively. There were 3 patients of delayed incision healing without other complications.

Conclusively, RVO patients receiving anti-VEGF injections with LTFU showed VA declines which, despite improvement in CFT following resume medication, did not revert to levels before LTFU, highlight the significance of continuous treatment.

Source: https://josr-online.biomedcentral.com/articles/10.1186/s13018-021-02534-y
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