Objective To explore the feasibility of using biomechanical indicators as supplementary evaluation to the Musculoskeletal Tumor Society Scoring System (MSTS) for amputee patients. Methods Twenty-four patients who underwent hemipelvectomy between September 2018 and January 2025 were enrolled. There were 15 males and 9 females with an average age of 61.4 years (range, 45-76 years). Participants performed gait tests at self-selected speeds using three assistive devices (prosthesis, single crutch, and double crutches). Motion data were analyzed using a customized OpenSim model. Biomechanical indicators of the intact limb exhibiting common characteristics were screened through correlation and sensitivity analyses. Test-retest reliability [interclass correlation coefficient (ICC)] of selected parameters was assessed to evaluate their potential as MSTS score supplements. Results All biomechanical indicators showed significant positive correlations with MSTS scores across assistive devices (P<0.05). Seven indicators demonstrated |Pearson correlation coefficients|>0.8, including walking speed, maximum hip angle, maximum hip moment, peak hip flexion moment, peak hip extension moment, hip flexion impulse, and hip extension impulse. Among these, maximum hip moment, hip flexion impulse, and hip extension impulse exhibited significant between-group differences in adjacent MSTS levels (P<0.05), indicating high sensitivity, along with excellent test-retest reliability (ICC>0.74, P<0.01). Conclusion Biomechanical indicators statistically qualify as potential supplements to MSTS scoring. Maximum hip moment, hip flexion impulse, and hip extension impulse demonstrate particularly high sensitivity to MSTS score variations.
目的:了解汶川地震后截肢患者存在的功能障礙及康復需求情況。方法:選取我院骨科2008 年5 月12 日至2008 年6 月1 日收治的19 例截肢患者為研究對象,采用自行設計的調查表,由康復醫師在征得研究對象同意的情況下完成資料的收集。結果:63.2%的患者存在肌力下降,36.8%的患者生活需要幫助,其中生活依賴明顯占31.6%,完全依賴占5.3 ％,幾乎所有患者存在參與功能障礙。 結論:大多數截肢患者存在不同程度的功能障礙,應該引起高度重視其康復鍛煉。