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PubMed1984

Time-dependent changes in the functional organization of somatosensory cerebral cortex following digit amputation in adult raccoons.

Surgical removal of the third forepaw digit in raccoons causes both long-term and short-term changes in functional organization within the digit 3 primary somatosensory (SmI) cortex. Previous studies have shown that 36-52 weeks following amputation in infant raccoons, neurons within the digit 3 cortical territory had become responsive to cutaneous stimulation of "new" forepaw regions adjoining the digit stump (Carson et al., 1981; Kelahan et al., 1980, 1981); the "novel" receptive fields (RFs) were often larger than normal and revealed no orderly somatotopic organization. In the present study, the cortical effects of digit 3 removal were examined in adult raccoons. Within 36 weeks after amputation, the digit 3 zone was also found to be reactivated by "novel" inputs from the forepaw, with no strictly topographic representation of the "new" skin fields. The basic features of cortical reactivation were very similar in animals amputated as adults and as infants, except that the former typically had larger neuronal RFs than the latter. Short-term cortical changes were studied in adult raccoons within 1 day and between 1 and 4 weeks after amputation: Significant time-dependent differences were found in the reactivated digit 3 territory. Within 1 hr following amputation, some cells in the digit 3 zone began to respond to low-intensity cutaneous stimulation of "new" forepaw regions, limited almost exclusively to digits 2 and 4. Neuronal RFs tended to be larger than normal and showed no strictly topographic organization. One to 4 weeks following amputation, the condition of the digit 3 zone differed dramatically from that found immediately and long after amputation--the majority of responsive neurons could be excited only by high-intensity stimulation of small RFs on the digit 3 stump; relatively few cells were sensitive to low-intensity stimulation of adjacent, intact skin regions. Again, no true somatotopic organization was evident. The combined results of these experiments indicate that within 36 weeks following removal of a digit in raccoons, the deprived SmI cortical sector undergoes a dynamic sequence of changes in functional organization: Neurons that are normally excited by stimulation of digit 3 first become responsive primarily to stimulation of digits 2 and 4 (within 1 day after amputation), then to the digit 3 stump (from at least 1-4 weeks after amputation), and finally again to digits 2 and 4 (within at least 36 weeks after amputation).(ABSTRACT TRUNCATED AT 400 WORDS)

Amputation, Traumatic↗
PubMed1994

Predictors for wound healing in ischemic lower limb amputation.

Determination of the level of amputation of an ischemic lower limb presents a difficult problem. This prospective study evaluated parameter capable of predicting wound healing in patients with peripheral vascular disease. Forty-four amputations performed on 38 patients for advanced ischemia of a lower extremity were analyzed. Among them, 20 patients had diabetes mellitus and 10 received vascular reconstruction prior to the amputation. All patients except one had a skin temperature measurement and 26 patients had segmental blood pressure measurements before amputation. Of the 44 amputations, 31 healed successfully and 13 failed to heal without further intervention. Patients who had an amputation above the ankle joint had a significantly better outcome than those who had amputation below the ankle joint. Among the amputations proximal to the ankle joint, all patients with segmental blood pressures > 70 mmHg at the amputation level had successful wound healing, compared with only half of those patients with segmental pressures < 70 mmHg. However, ankle segmental pressure was not associated with the outcome of wound healing in the amputations distal to the ankle joint. The absolute skin temperature and the difference between the skin and ambient temperature were found to be poor predictors for wound healing. No significant differences were detected among the successes and failures with regard to the patient's sex, age, blood chemistry and duration of diabetes mellitus.

Adult↗
PubMed1994

Cardiorespiratory status and movement capabilities in adults with limb amputation.

Two hundred and thirty subjects with various levels of upper and lower limb amputation were examined with regard to cardiac and respiratory functions. The subjects were examined at rest and in balanced wheelchair ergometer testing. Noncontinuous step-by-step increased loading was performed. The data given are for age-group 20-40 who sustained traumatic amputation and suffered no prior respiratory or circulatory disease. Subjects after above-knee (AK), bilateral AK or AK plus below-knee amputation) showed a loss of the reaction of an adequate systolic output rise in wheelchair ergometer testing. In the adults with amputation, the increase of minute stroke volume occurred solely at the expense of heart rate. The contractile capacity of myocardium was decreased. Cardiac indicator value in subjects with AK or bilateral AK amputation in sub-maximal exercises training appeared to be lower than in the control group. A reduced work capacity takes place in subjects after body mass loss. The maximal oxygen intake in subjects with bilateral lower limb amputation was less than in the control group. The breaking of correlation interrelationships between working capacity indicators was revealed in the subjects with bilateral lower limb amputation. The adults with upper limb amputation showed a reduction in pulmonary ventilation. During exercise training, the capacity for adequate pulmonary ventilation was lost in the above-mentioned subjects. This research demonstrates that movement capabilities in adults with amputation depend not on the level of amputation and residual limb condition, but to a great extent upon the dynamic capabilities of the cardiac and respiratory muscular systems' ability to adjust to the limb loss.

Adult↗
PubMed1993

Digit amputation in cattle: 85 cases (1971-1990).

Medical records of 83 cattle, which had 1 or more digit amputations performed at Kansas State University and The Ohio State University veterinary hospitals between 1971 and 1990, were reviewed. Signalment, duration of lameness, prior treatment, digit involved, and pathologic condition were evaluated. Owners were contacted with regard to the animal's duration in the herd after amputation and reason for exiting the herd, level of production attained, and degree of lameness. The animal was judged to have a good, fair, or poor recovery on the basis of this information. Septic arthritis of the distal interphalangeal joint and resulting complications were the problems most frequently treated by digit amputation. Fifty-one percent of cattle undergoing digit amputation attained preamputation production levels for a minimum of 24 months. Approximately 30% of cattle undergoing digit amputation were culled for lameness, usually within 7 months of surgery. Cattle remaining in the herd more than 12 months after amputation were unlikely to be culled for lameness, indicating that long-term breakdown of supporting structures was uncommon. Likelihood of a good recovery decreased from 71.4% in cattle weighing < or = 341 kg to 27.3% in cattle weighing > or = 682 kg. Cattle undergoing amputation of a rear medial digit were more likely to recover well than those undergoing amputation of either front digit. The most frequently performed amputation was that of a rear lateral digit, but it was associated with the poorest recovery, possibly because of the disproportionate amount of stress placed on this digit. Cattle used for dairy and beef production had approximately equal chances of a good recovery from digit amputation.(ABSTRACT TRUNCATED AT 250 WORDS)

Amputation, Surgical↗
PubMed1988

Selection of patients for through-the-knee amputation.

Forty-six adult patients had a through-the-knee amputation (disarticulation of the knee) in a four-year period. Thirty-four of the patients had peripheral vascular insufficiency and were judged to lack the potential for using a prosthesis functionally, although the evaluation indicated that they had the potential for healing of the wound at the below-the-knee level of amputation. At a minimum follow-up of one year, the amputation wound had healed in thirty of these patients, and no joint contracture had developed. Two patients died in the first postoperative month, and two had failure to heal and needed revision to an above-the-knee amputation. The remaining twelve patients who had a through-the-knee amputation were judged to be potentially able to use a prosthesis functionally, but they did not have the capacity for wound-healing at the below-the-knee level. Therefore, in these patients, a through-the-knee amputation was performed as an alternative to an above-the-knee amputation. The amputation wound healed in eight of these patients, but four (33 per cent) had failure to heal and needed subsequent revision to an above-the-knee amputation. All twelve patients were able to use a prosthesis. The through-the-knee amputation provides good muscular balance and has a low risk for the late development of joint contracture. The residual limb (stump) provides an excellent surface area for sitting balance and a lever-arm for transfer. In a patient who has the potential to use a prosthesis functionally, the residual limb allows direct load-transfer (end weight-bearing).(ABSTRACT TRUNCATED AT 250 WORDS)

Activities of Daily Living↗
PubMed2005

Histomorphometric changes in the vessel wall at the site of amputation in diabetic patients--do they influence healing of the stump?

PURPOSE: To predict healing of the stump by assessing the microscopic vascular changes at the amputation site. METHODS: A cohort study was conducted on 39 patients, 18 of them had below-knee amputation (group A) and 21 had ray amputation of a single toe (group B). Biopsies were taken from the anterior and posterior tibial arteries and the venae comitantes of group A patients. For group B patients, biopsies of the digital artery and dorsal vein of the toe were taken. RESULTS: In group A, 15 patients required no further amputation (group A1) and 3 underwent a further above-knee amputation (group A2). In group B, 16 required no further amputation (group B1) and 5 underwent a below-knee amputation (group B2). Lumen narrowing caused by intimal thickening of the arteries was significantly different between groups A1 and A2 (p<0.05). Lumen narrowing of the dorsal veins between groups B1 and B2 was also significantly different (p<0.05). The proportion of the vessel walls made up of intima and media was significantly different in both A1 and A2 as well as B1 and B2 groups. The proportion of total wall thickness over the total diameter of the vessel was not significantly different between both subgroups of A and B. CONCLUSION: Intimal thickening and medial thinning in the arteries can be used to predict the stump healing in patients who underwent below-knee amputation. For ray amputation patients, similar changes occurred in the dorsal veins, and this finding can also be used to predict the healing of the stump. However, intimal thickening occurred at the expense of the media; therefore, there is little change in the wall thickness.

Adult↗
PubMed1993

Stump problems in traumatic amputation.

Stump problems in amputations resulting from employment related injuries were investigated in 397 cases in the Chugoku and Shikoku districts of Japan between 1987 and 1991. Ninety-seven patients (24%) had stump problems which interfered the prosthetic fitting. Stump problems of the upper extremity were seen in about 9% (17 amputees), two thirds of which were skin troubles. Stump problems of the lower extremity were seen in about 37% (80 amputees). Certain complaints were associated with specific methods of amputation; abnormal keratosis in Syme's amputation, equinus deformity in Chopart's amputation, reduced muscle power in above the knee (A/K) amputation and joint dysfunction in below the knee (B/K) amputation. Adequate prosthetic fitting was achieved by the modification of the socket and alignment in almost all amputees with stump problems. In only two cases, Chopart's amputation required subsequent Syme's amputation due to equinus deformity with abnormal keratosis. In almost every case, stump problems are avoidable by means of surgeons' deliberate evaluation of the affected limb and adequate choice of the amputation level.

Accidents, Occupational↗
PubMed1978

Intracardial arteriographic study on vascular changes in amputated rabbits.

The vascular changes in rabbits after amputation were studied in vivo with arteriography, after intracardial injection of contrast. In the amputated extremity an initial vasoconstriction of the arteries was found. Thereafter changes were observed in arteries and veins, both in the operated and contralateral extremities, depending on the level of amputation and the manner in which the stump was closed. After amputation distally on the extremity and after stump closure without myoplasty arteriovenous shunting was observed in the amputation stump. Arteriovenous shunts were not seen after knee disarticulation and after proximal amputation on crus with myoplasty. Inactivity of the muscles in the amputation stump is supposed to be the cause of the shunt formation. After mid-femur amputation a permanent vasoconstriction of the femoral artery was observed, whereas artery dilation was seen when amputation on the femur was combined with plugging of the medullary cavity.

Amputation, Surgical↗
PubMed2005

Major limb amputations: an audit of indications in a suburban surgical practice.

BACKGROUND: Advancements in vascular and microsurgery in developed countries have led to fewer major limb amputations. AIM: This audit of major limb amputations performed at the Olabisi Onabanjo University Teaching Hospital, Sagamu, Nigeria, between June 1998 and May 2003, was conducted to find out the indications for amputation and highlight those cases that could be salvageable. PATIENTS AND METHODS: This was a retrospective study. Case notes of all patients who had major limb amputations were examined for patients' age, sex, time of presentation, limb affected, indications for amputation, the severity of crush injury to limb, stage of musculoskeletal tumors and Wagner's grade of diabetic foot. RESULTS: A total of 71 limbs were amputated in 69 patients; 56 limbs (78.1%) were unsalvageable, while 15 limbs (21.1%) were salvageable. Trauma accounted for 76% followed by 22% performed due to gangrene secondary to diabetes mellitus. Out of the 56 unsalvageable limbs, 31 patients presented with severely crushed limbs. Out of the 15 salvageable limbs, there were 11 cases of clean-cut traumatic amputations, two of soft-tissue sarcoma and one each of ruptured popliteal aneurysm and stenosed popliteal artery. CONCLUSION: Trauma and diabetes mellitus were leading indications for amputation. Expertise in limb salvage procedures and availability of appropriate equipment may reduce the numbers of amputations performed.

Adult↗
PubMed2002

Ethnicity and risk of diabetes-related lower extremity amputation: a population-based, case-control study of African Caribbeans and Europeans in the United kingdom.

BACKGROUND: In the United States, people of black African descent with diabetes have 2 to 3 times the amputation risk of whites. This may be due to differences in care or pathophysiological characteristics. We therefore determined diabetes-related amputation rates in African Caribbeans vs Europeans in the United Kingdom, where care delivery is more equitable. METHODS: We conducted an incidence and case-control study, based in London, England. All diabetes-related amputations performed between 1992 and 1997 were identified. Controls, those with diabetes but no amputation, were sampled from family practitioners. Risk factor data were abstracted from medical records. RESULTS: Incident diabetes-related amputation occurred in 67 Europeans and 19 African Caribbeans. Amputation rates, age standardized to the diabetic population, were 147 per 100 000 and 219 per 100 000 in African Caribbeans and Europeans, respectively (relative risk, 0.67; 95% confidence interval [CI], 0.32-1.40; P =.2). Case-control analyses were performed on 178 cases and 350 controls. The ethnic difference in amputation risk differed significantly by sex (P =.009 for interaction). The unadjusted odds ratio comparing African Caribbeans with Europeans in men was 0.31 (95% CI, 0.17-0.57; P<.001), and in women was 0.97 (95% CI, 0.49-1.85; P =.9). Adjustment for smoking attenuated the odds ratio in men to 0.45 (95% CI, 0.23-0.89, P =.02); adding neuropathy, peripheral vascular disease, and age attenuated the odds ratio further to 0.97 (95% CI, 0.34-2.73; P =.9). CONCLUSIONS: In contrast to the United States, we find no ethnic difference in diabetes-related amputation in women in the United Kingdom, but in men, amputation risk in African Caribbeans is one third that of Europeans. This was wholly accounted for by low smoking, neuropathy, and peripheral vascular disease rates.

Africa↗
PubMed2000

Thumb reconstruction with a wrap-around free flap according to the level of amputation.

In 1980, Morrison and O'Brien reported their experiences with the reconstruction of an amputated thumb using a wrap-around neurovascular free flap from the great toe, but its indication has been limited distal to the metacarpophalangeal (MP) joint (Morrison et al., J Hand Surg 5:575-583, 1980). We have performed 37 wrap-around free flaps from the great toe for the reconstruction of thumbs amputated at distal or proximal to the MP joint and investigated their functional results according to the level of amputation. The amputation was distal and proximal to the MP joint in 25 and 12 cases, respectively. Pinching and grasping power, two-point discrimination, and the amount of opposition to the other fingers were compared to the uninjured hand. Pinching and grasping power were not significantly different according to the level of amputation but the results of two-point discrimination was better in the cases amputated proximal to the MP joint. The opposition of reconstructed thumb to the other fingers was completely possible in all cases amputated distal to the MP joint. In the 12 cases amputated proximal to the MP joint of the thumb, opposition was completely possible in 6 cases in which the iliac bone block was fixated in the position of 30 degrees flexion and 45 degrees internal rotation. However, in the other six cases in the fixation of 30 degrees flexion and 30 degrees internal rotation, the opposition of the reconstructed thumb to the ring and little fingers was impossible in five cases and only to the little finger in one case. In this study, we concluded that amputation proximal to the MP joint is not an absolute contraindication to the wrap-around free flap procedure for thumb reconstruction. However, for a better functional outcome, we recommend iliac bone block fixation in the position of 30 degrees flexion and 45 degrees internal rotation.

Adult↗
PubMed1984

Prediction of amputation wound healing: the role of transcutaneous pO2 assessment.

With the recent trend towards more distal lower limb and below-knee amputation for peripheral vascular disease, failure of amputation healing remains a common clinical problem. There is an urgent need for more objective measures of selecting the most appropriate distal amputation level compatible with healing. Oxygen availability is the final arbiter of tissue viability and healing potential, and we have shown that the measurement of transcutaneous pO2 (TcpO2) accurately reflects the degree of ischaemia in the lower limb. In 59 patients having 62 amputations for peripheral vascular disease significantly lower TcpO2 levels were related to amputation failure. Below-knee amputations with a pre-operative below-knee TcpO2 of above 35 mmHg always healed, and failures had levels of 35 mmHg or less. Nine out of sixteen patients having above-knee amputations had pre-operative below-knee TcpO2 values well above 35 mmHg, suggesting that they may possibly have undergone successful below-knee amputation. No correlation between ankle systolic pressure and amputation healing was found. TcpO2 measurement is simple, non-invasive and reliable and offers an exciting research advance in the assessment of effective tissue perfusion.

Amputation Stumps↗
PubMed1989

Major amputation in a defined population: incidence, mortality and results of treatment.

Medical records of all patients, from a defined population of 88,000 inhabitants, who underwent major lower limb amputation during 1980-82 were retrospectively scrutinized. The records showed 131 amputations were performed in 106 patients at the district hospital and 22 amputations on 17 patients at the local university hospital, referral centre, altogether 57 men and 66 women. This gave an amputation incidence of 46 per 10(5) inhabitants per year. Of the amputees 47 per cent were older than 80 years. Only two patients underwent reconstructive vascular surgery (at the university hospital) before surgery. Final amputation level was above-knee in 61 per cent of the patients treated at the district hospital. Mortality rates at 30 days and 2 years after the amputation were 23 and 56 per cent, respectively, and the age-corrected survival after 2 years was 55 per cent. For patients who came from and eventually returned to their own homes the mean hospital stay amounted to 184 days (postoperative deaths excluded). After amputation 26 patients were trained to wear a prosthesis and 16 of these used the prosthesis 2 years after amputation. The present study underlines the need for prospective and parallel studies of vascular surgery and amputation as well as analyses of the risk factors involved in lower limb ischaemia in defined populations.

Adult↗
PubMed1994

Rehabilitation outcome 5 years after 100 lower-limb amputations.

Received wisdom commends a policy of maximizing the ratio of below-knee to above-knee amputations in patients with end-stage arterial disease. After adoption of this policy, the long-term outcome of 100 consecutive lower-limb amputations in 96 patients was monitored by annual review for 5 years. The ratio of primary below-knee to above-knee amputations was 2:1, with 9 per cent of below-knee amputations undergoing revision to a higher level. At 2 years after amputation only 26 per cent of patients were successfully walking out of doors, while 40 per cent had died. By 5 years 67 per cent were dead and only 9 per cent continued to walk out of doors with an artificial limb, although a further 8 per cent continued to use the limb within the confines of their own homes. In a previous audit of 193 amputations performed during the 3.5 years to December 1984, stump healing was a problem in 45 per cent of primary below-knee amputations, compared with 25 per cent in the present study. Although the below- to above-knee ratio in 1984 was only 1:2, the overall rehabilitation rate, as determined by the proportion of patients able to walk at 2 years, was 34 per cent. It is concluded that increasing the proportion of below-knee amputations from one-third to two-thirds of lower-limb amputations for occlusive arterial disease does not improve effective rehabilitation rates. Received wisdom on the desirability of a high below- to above-knee ratio may be wrong.

Age Factors↗
PubMedDate not supplied

Lower-extremity amputations in patients with diabetes: pre- and post-surgical decisions related to successful rehabilitation.

BACKGROUND: Peripheral vascular disease and diabetes account for the majority of lower-extremity amputations in the adult population. Whenever a patient presents to a surgeon regarding a diseased limb, the initial basic decision is to determine whether to attempt limb salvage or proceed with an amputation. Unfortunately, limb salvage is not an option for many of these patients. Once amputation is chosen as a treatment option, the optimal level of amputation has to be determined by the surgeon, who is then faced with selecting the optimal level of amputation compatible with wound healing and subsequent prosthetic fitting. METHODS: Methods for objectively determining optimal amputation level include vascular evaluations, assessing the level of cellulites or osteomyelitis, or intra-operatively, by looking at the amount of bleeding in skin flaps. RESULTS: The net outcome is that there is currently no universally accepted method for determining the level of amputation for successful wound healing or for preventing subsequent higher amputations. CONCLUSIONS: What is generally recognized is that there are disparities in the rates of amputation for type 1 versus type 2 diabetic patients, for different ethnic groups and for patients with multiple co-morbidities. However, with advances in surgical techniques and with modern prosthetics, all categories of patients are benefiting from surgeries in which a longer residual limb can be kept (within surgical constraints related to proper wound healing), and where appropriate biomechanical considerations are taken into account.

Amputation, Surgical↗
PubMed2004

The indications for and the prognostic significance of amputation as the primary surgical procedure for localized soft tissue sarcoma of the extremity.

BACKGROUND: The indications for primary amputation of a localized soft tissue sarcoma (STS) of the extremity are not well defined in the literature. However, it has been suggested that patients who require an amputation to treat an STS are at increased risk for developing metastases. We categorized the main indications for primary amputation in our patient population and compared their oncological outcome with the outcome of patients who underwent limb-sparing surgery. METHODS: 413 consecutive patients treated surgically at a single center for primary, nonmetastatic, deep, intermediate-, or high-grade STS of the extremity were reviewed. Indications for primary amputation were identified. Demographics and outcomes were compared between the amputation and limb-salvage groups. Multivariate Cox model analysis was used to identify independent risk factors for systemic relapse. RESULTS: Twenty-five (6%) of 413 patients with STS underwent primary amputation: they were older (P = .05), had larger tumors (P = .001), and had a significantly greater risk of developing metastatic disease than patients who underwent limb-sparing procedures (P = .008). However, multivariate analysis demonstrated that the only independent predictors of systemic relapse were tumor size (P = .0001) and tumor grade (P = .0001). Primary amputation was not an independent risk factor for metastatic disease. CONCLUSIONS: The decision to perform a primary amputation for an STS of the extremity is based on the location and local extent of the tumor, and the expected function of the extremity after tumor resection. The higher risk of metastases for patients who require primary amputation is accounted for by independent risk factors associated with their tumors--predominantly large tumor size.

Adolescent↗
PubMed1986

Bilateral below-knee amputations: experience with 80 patients.

This review expands information concerning the bilateral below-knee (BK) amputee, describing the findings of a retrospective assessment of 80 such patients. Factors evaluated included etiology, associated conditions, time between amputations, late revisions, use of prostheses, and survival. In 63 patients both amputations were because of atherosclerosis. Of these patients, 86% were diabetic and 84% hypertensive. Peak incidence of the second amputation was during the 7th decade. Average time between amputations was 23 months. Forty-five (71%) of the atherosclerotic patients achieved some functional use of bilateral prostheses. The five patients employed at the time of the second amputation returned to work using prostheses. Average survival after the second amputation was 44 months for those deceased, and 64 months for those alive at the end of the study period. Nine patients had amputations because of various forms of injury, including one for sequential developments due to alcohol-related sensory loss. Eight of this group had a diagnosis of alcohol abuse of psychosis. Reasons for amputations included frostbite, burns, suicide attempt and sensory loss. Five achieved long-term but generally suboptimal prostheses use. The findings support the impression that most atherosclerotic bilateral BK amputees can use prostheses and that their survival and low rate of late stump revisions justify restorative efforts. Mental status was the major determinant of amputation and prostheses use among the non-atherosclerotic patients; discharge from psychiatric hospitals without adequate community support systems was probably contributory. Management and prevention require close collaboration between the rehabilitation, surgical, psychosocial, and public health disciplines.

Age Factors↗
PubMed1986

Stroke hemiplegia and subsequent lower extremity amputation: which side is at risk?

The purpose of this study was to see 1) if there is a relationship between side of hemiparesis and subsequent lower extremity amputation and 2) if time from onset of cerebrovascular accident (CVA) to onset of amputation is less in patients with diabetes mellitus than in those without that disease. Twenty-two subjects with a mean age of 63.9 +/- 11.4 years met the criterion of having a CVA followed by a lower extremity amputation. Date and side of hemiparesis and amputation were noted and a relationship was determined using the two-tailed chi-square test. Twenty-one of 22 subjects had the amputation on the same side as their hemiparesis which represents a significant relationship (chi 2 = 18.16, p less than 0.001). Mean time from CVA to amputation was 32.5 +/- 26.12 mo for diabetics and 55.0 +/- 33.1 mo for nondiabetics which also represents a significant difference (t = 1.74, p less than 0.05). It is concluded there is a strong relationship between side of hemiparesis and subsequent lower extremity amputation with the amputation occurring most often on the hemiparetic side and earlier in patients with diabetes mellitus. The causal relationship between side of CVA and subsequent same sided amputation may be due to altered autonomic nervous system control, altered sensation with increased incidence of local unobserved trauma or decreased/altered muscle fiber use on the affected side. Implications for clinical rehabilitation include education for skin protection and attempting to increase muscle fiber activity.

Aged↗