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Effect of age on progression through temporary prostheses after below-knee amputation
A M Scremin1, J I Tapia, D A Vichick
1Rehabilitation Medicine Service, DVA West Los Angeles Veterans Affairs Medical Center, CA 90073.
American Journal of Physical Medicine & Rehabilitation
|December 1, 1993
Summary
Age, not the amputation cause, impacts healing after below knee amputation. This study tracked prosthetic progression in 46 patients, finding age significantly correlated with healing rates.
Area of Science:
- Orthopedics
- Rehabilitation Medicine
- Vascular Surgery
Background:
- Below knee amputation is a common procedure for conditions like diabetes, trauma, osteomyelitis, and peripheral vascular disease.
- Effective prosthetic fitting and rehabilitation are crucial for patient recovery and mobility.
- Understanding factors influencing healing and prosthetic progression is vital for optimizing patient outcomes.
Purpose of the Study:
- To investigate the correlation between the cause of below knee amputation and the rate of healing.
- To assess the influence of patient age on the progression through temporary prostheses.
- To determine if age or amputation etiology is a stronger predictor of prosthetic rehabilitation success.
Main Methods:
- A cohort of 46 patients undergoing below knee amputation was studied.
- Healing was evaluated weekly by an amputee rehabilitation team based on prosthetic progression milestones (e.g., cast with pylon, temporary prostheses).
- Statistical analyses included regression analysis to assess the impact of age and analysis of variance to compare different amputation etiologies.
Main Results:
- Age showed a significant positive correlation with the time to achieve above knee cast with pylon and foot (AKPy) and below knee cast with pylon and foot (BKPy).
- Initially, the trauma/osteomyelitis group demonstrated faster progression to BKPy compared to diabetes or peripheral vascular disease groups.
- However, after adjusting for age, these differences in healing rates among etiologies disappeared, indicating age as the primary factor.
Conclusions:
- Patient age, rather than the underlying cause of amputation, is a significant predictor of healing rates after below knee amputation.
- The rate of progression through temporary prostheses is a reliable indicator of healing in amputee rehabilitation.
- These findings suggest that age-specific rehabilitation strategies may be beneficial for optimizing outcomes in patients with below knee amputations.