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Testosterone replacement therapy and motor function in men with spinal cord injury: a retrospective analysis

Clark MJ, Petroski GF, Mazurek MO, Hagglund KJ, Sherman AK, Lammy AB, Childers MK, Acuff ME

American journal of physical medicine & rehabilitation, 2008

480 participants

Abstract

OBJECTIVE: To evaluate motor function in men with spinal cord injury (SCI) given testosterone replacement therapy (TRT).

DESIGN: American Spinal Injury Association (ASIA) rehabilitation discharge motor index scores were compared between men with SCI given TRT (testosterone cypionate, 200 mg, monthly; n = 50) and a comparison group (n = 480) in a retrospective study. Covariates included admission motor and FIM scores, level of injury (paraplegia/tetraplegia), days since injury, and age.

RESULTS: ASIA discharge motor scores for ASIA impairment scale grades C and D were significantly different (P < 0.05) in men with incomplete SCI given TRT, relative to the comparison group. The covariate-adjusted mean discharge score for the TRT group was higher than for the comparison group. There were no significant differences in discharge FIM scores (P = 0.34) for men with incomplete injuries and no differences in the adjusted discharge ASIA motor scores (P = 0.92) or adjusted discharge FIM scores (P = 0.16) for men with complete injuries.

CONCLUSION: The data support a relationship between TRT and strength gains in men with residual motor function after SCI. Prospective studies are necessary to validate these findings.

How strong is the evidence?

Evidence Hub reads this as a case-control, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 480 participants or records.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

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