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  • Title: Addition of Bone Marrow Stem Cells Therapy Achieves Better Clinical Outcomes and Lower Rates of Disease Progression Compared With Core Decompression Alone for Early Stage Osteonecrosis of the Femoral Head: A Systematic Review and Meta-Analysis.
    Author: Zhang C, Fang X, Huang Z, Li W, Zhang W, Lee GC.
    Journal: J Am Acad Orthop Surg; 2020 Dec 01; 28(23):973-979. PubMed ID: 32118614.
    Abstract:
    BACKGROUND: Osteonecrosis of the femoral head (ONFH) is a cause of hip pain and early joint arthrosis in the young patient. Nonarthroplasty interventions aim to decompress vascular congestion in the femoral head and stimulate new bone growth to prevent progression and collapse. Therefore, the purpose of this study is to evaluate the available evidence on the effect of adjuvant bone marrow stem cells (BMSCs) for early stage ONFH. METHODS: We performed a systematic review of the MEDLINE, PubMed, Embase, and Cochrane databases in search of published reports comparing the core decompression (CD) with/without adjuvant BMSCs for ONFH. The cohort was divided into two groups: (1) CD with BMSCs (intervention) and (2) CD alone (control subject). The various outcome parameters including hip pain and function, progression of ONFH, rate of revision surgeries, and complications were analyzed. Data were extracted and aggregated for meta-analysis. Cases with staging beyond Ficat II, UPENN II, or ARCO II were excluded. RESULTS: Of the published reports, 16 met our inclusion criteria with an aggregated 583 hips in the intervention and 468 hips in the control subject groups, respectively. Addition of bone marrow cells to CD resulted in lower hip pain score (VAS) (MD = -10.88, 95% CI = -16.84 to -4.92, P = 0.003) and higher HHS score (MD = 5.59, 95% CI = 1.13 to 10.04, P = 0.01) compared with CD alone at the 24-month follow-up. For rates of progression to higher stages, 138 progressed in the intervention group compared with 202 in the control subject group (P = 0.0002). Finally, subsequent patients who required total hip arthroplasty surgery were lower in the intervention group (22.5% versus 42.3%, P = 0.001). CONCLUSIONS: Despite heterogeneous and poor data, there is evidence that addition of bone marrow cells to CD appears to result in better clinical outcomes and lower rates of disease progression compared with cored decompression alone. LEVEL OF EVIDENCE: Therapeutic Level III.
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