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Surgery for ventricular tachycardia associated with right ventricular dysplasia: disarticulation of right ventricle in 9 of 10 cases.

Ten patients (nine men, one woman; mean age 39 years) with arrhythmogenic right ventricular dysplasia underwent surgery to control life-threatening drug refractory ventricular arrhythmias. All had ventricular tachycardia causing syncope and six had a history of cardiac arrest. In all a minimum of three antiarrhythmic drugs (mean five) had been ineffective. At operation, the right ventricle was grossly diseased in all patients. Ventricular tachycardias were induced and mapped intraoperatively in all patients. The surgical plan was to ablate the arrhythmogenic focus if it was less than 4 cm2; one patient was so managed. Of the remaining nine, four underwent partial (approximately 40% of the right ventricular free wall) and five underwent total right ventricular disarticulation. All survived the operation and are alive at a mean follow-up interval of 24 months (range 5 to 67). Two patients developed new sustained ventricular tachycardias. These were well tolerated and, unlike the original arrhythmias, were easily controlled by drug treatment. All patients who underwent right ventricular disarticulation manifested signs of right heart failure in the early postoperative period, but these lessened progressively with the development of systolic septal movement into the right ventricular cavity. All 10 patients are in New York Heart Association class I or II at last review. In selected patients with arrhythmogenic right ventricular dysplasia, surgery offers a curative treatment for ventricular tachycardia and should be considered for patients whose arrhythmias are life-threatening and refractory to drug treatment.

Adolescent↗

Right ventricular disarticulation. An 18-year single centre experience.

OBJECTIVE: Right ventricular disarticulation (RVD) is an accepted procedure in the treatment of ventricular tachycardia of right ventricular origin. We set out to review the long-term outcomes with RVD at our institution for patients with arrhythmogenic right ventricular dysplasia (ARVD) or refractory tachycardia. A renewed interest in this operation has come about in patients unable to tolerate implantable cardioverter defibrillators. METHODS: Seventeen patients had RVD carried out between 1985 and 2003. There were 15 males and 2 females. The age range was 14-72 (median: 34). Six patients had partial RVD and 11 a complete RVD. ARVD was confirmed in 15 patients at histology. Biventricular pacing was used post-operatively in the two most recent patients. RESULTS: The follow-up was complete in 94% (16/17). The median follow-up was 13 years (0-18). The overall hospital mortality was 6% (1/17). Over the follow-up period there were three deaths 9, 11 and 17 years post-surgery. Heart transplantation due to biventricular failure was required in two patients. In the group followed up for more than 10 years the over all event free survival at 10 years was 77% (3/13). CONCLUSIONS: In cases of refractory ventricular tachycardia, where multiple antiarrhythmic medication, repeated catheter ablation and ICD insertion are unsuccessful at symptom control, RVD is an excellent antiarrhythmic procedure. In the long term, signs of biventricular failure present, possibly, dependent on the natural history of ARVD. The long-term effect of biventricular pacing on the disarticulated right ventricle is yet to be defined.

Adolescent↗

Fibula flap reconstruction of the condyle in disarticulation resections of the mandible: a case report and review of the technique.

Segmental resection of the mandible with disarticulation of the temporomandibular joint is occasionally required in the management of extensive tumors. The reconstruction of these deformities is complex, frequently involves staged procedures, and may result in significant deformity and loss of function for patients. The fibula free flap has become a standard treatment option for primary restoration of segmental mandibular deformities. However, little is published about its role in reconstructing the mandibular condyle. This paper describes a simplified technique for primary reconstruction of mandibular defects, including the mandibular condyle, in disarticulation resections of the mandible utilizing the fibula free flap.

Adult↗

Stump lengthening after hip disarticulation using a modular endoprosthesis in 5 patients.

To reduce the disability after hip disarticulation, we developed a special surgical procedure in patients having a proximal femoral tumor with a large tumor involving the sciatic nerve or neoplasms involving the tibia and femur. The hip was disarticulated, but we preserved a musculocutaneous flap. A modular endoprosthesis was then placed in the acetabulum or, in case of an extraarticular resection of the hip joint, it was placed in the iliac bone. A trevira tube was used for reconstruction of the joint capsule and fixation of soft tissues. We performed this procedure in 5 patients who had a good functional outcome.

Adolescent↗

Fitting of electronic elbow on an elbow disarticulated patient by means of a new surgical technique.

Rehabilitation of trans-humeral amputees represents a challenge. One of the difficulties to overcome is prosthetic suspension. In the case of elbow disarticulation the presence of humeral condyles permits better suspension, but there is no room for elbow joints, particularly electronic ones, and the only available mechanisms are provided by external hinges. The purpose of this report is to present a case of a primarily elbow disarticulated patient, with indication for surgical revision due to bad skin coverage, neuroma and the wish to improve prosthetic fitting. The surgical plan outlined was to produce a shortening of the humerus, by means of an osteotomy just above the humeral condyles, preserving them for prosthetic suspension. This bone reduction was carried out with complementary shaping of bone segments with an indentation to enhance fixation. The operation was completed with neuroma resection, myodesis and removal of the skin grafted area. Preservation of the humeral condyles actually produced effective suspension. For final fitting a Utah Arm II was used, with wrist rotator, and interchangeable hand and Greifer for terminal devices. Good initial results and at nine months follow-up suggest this procedure should be considered in other elective situations.

Accidents, Traffic↗

Atlanto-occipital disarticulation. Accident characteristics.

A retrospective study of cases of atlanto-occipital disarticulation was conducted to describe incident characteristics: 24 cases were identified, including nine motor vehicle drivers, two passengers, seven pedestrians, and five motorcyclists; one other person had fallen four stories. The highest rates were found among motorcyclists and pedestrians. Atlanto-occipital disarticulations occur in high-energy impacts and collisions and are associated with aortic laceration in 25% and basilar skull fracture in 21% of such cases. Current restraint systems and motorcycle helmets do not appear to prevent this generally rapidly fatal injury.

Accidental Falls↗

Hip disarticulation using the lateral approach: a new technique.

A new approach to hip disarticulation is described. This technique uses a laterally based racquet incision. The advantage of this incision is that it uses a lateral approach to the hip, which is familiar to orthopaedic surgeons. This approach is combined with a circumferential incision to facilitate exposure of neurovascular structures. By basing the incision on the lateral approach to the hip, dissection of large blood vessels is minimized, which helps to decrease operative blood loss. Viability of the soft tissue flaps is excellent, with only two minor wound complications occurring. Phantom limb pain was minimal, and no patient required pain medication beyond the 3-month postoperative routine. The three patients who chose to use prostheses had no difficulty from the incisions. The clinical significance of this study is to enable orthopaedic surgeons to do hip disarticulation using the familiar anatomy of the lateral approach to the hip.

Blood Loss, Surgical↗

Loads in hip disarticulation prostheses during normal daily use.

As a result of deficiency at birth, disease or trauma, there are people who have no limbs from the hip joint downwards. These people have no possibility of locomotion without the use of other devices such as wheelchairs or hip disarticulation prostheses. As these prostheses are used by people of all ages, people who are different in their grade of physical activities and their weights, the prostheses are subject to different stresses related to these different circumstances. The European Level 2 Draft Standard prEN 12523: 1966 "External limb prostheses and external orthoses - requirements and test methods" contains strength requirements for lower limb prostheses. These requirements shall be verified, where appropriate, by the application of the International Standard ISO 10328 "Prosthetics - Structural testing of lower limb prostheses" and ISO/FDIS 15032 "Prosthetics: Structural testing of hip prostheses". In order to allow the prostheses to be tested to the stresses that are experienced in real life, it is necessary to measure the stress that is induced in the prostheses while the patient is in an everyday situation, such as walking on level floor, walking on grass and/or walking on an uneven surface. This work is concerned with the acquisition of loads generated in hip units of hip disarticulation prostheses by amputees during various activities. More than 30 patients were tested in Germany, France, and Belgium. The measurements were carried out with financial support from the European Commission and coordinated by the secretariat of CEN TC 293.

Amputees↗

Rehabilitation of a triple amputee including a hip disarticulation.

A multiple amputee more severe than a triple amputee is uncommon. There have been no reports on the rehabilitation outcome of a triple amputee, including hip disarticulation and transtibial amputation. The authors report the rehabilitation of a patient with left hip disarticulation, right trans-tibial amputation, and left trans-humeral amputation due to a train accident. He has successfully completed the rehabilitation programme and has become independent in prosthetic ambulation, activities of daily living, and driving.

Adult↗

Disappearance of soft tissue and the disarticulation of human remains from aqueous environments.

Human remains recovered from aquatic environments were scored for regional presence of soft tissue, exposure of bone, and loss of body parts to determine the general pattern of soft tissue loss and loss of body parts. Regions scored were: the cranium, mandible, neck, hands, forearms, upper arms, feet, legs, pelvic girdle, and trunk. Initial disappearance of soft tissue, resulting in exposure of underlying bones, occurred in areas thinly overlain by soft tissue beginning with the head, hands, and anterior lower legs. Disappearance of body parts followed the general sequence: bones of the hands and wrists, bones of the feet and ankles, and the mandible and cranium. The lower legs, forearms, and upper arms are the next units to separate from the body. Known postmortem intervals for remains analyzed ranged from weeks to years and could not reliably be estimated based on the condition of the body at the time of recovery. As parts drop away from a floating carcass in large or current-driven bodies of water, they are often separated from the major body unit. This complicates recovery. Knowledge of disarticulation sequences allows more informed assessment of skeletal element recoveries to be expected and assists in the interpretation of artifacts and events produced by different disarticulating environments.

Adolescent↗

Bilateral hip disarticulation in paraplegics with decubitus ulcers.

A small percentage of paraplegic patients develop chronic decubitus ulcers that are unresponsive to the usual plastic surgical maneuvers. We used anatomic and nonanatomic (filleting) approaches to hip disarticulation in three patients with severe chronic cavernous decubitus ulcers. All patients were rehabilitated to wheelchair ambulation, with subsequent healing of the operative sites. This type of therapy might be considered in paraplegics with less compelling reasons for amputation, because of the associated rehabilitation potential.

Colostomy↗

Hip disarticulation for recurrent vulvar cancer in the groin.

A patient with squamous cell carcinoma of the vulva treated with a radical vulvectomy and bilateral inguinal and femoral lymphadenectomies utilizing separate groin incisions, subsequently developed a recurrence in the skin bridge between the vulvar and groin excisions. Following groin irradiation with chemosensitization, the tumor progressed to involve the superior public ramus and femoral vessels. A left hip disarticulation and resection of a portion of the superior pubic ramus was performed. The patient has been free of disease for 3 years. The advantages of this procedure over a hemipelvectomy include shorter operative time, reduced blood loss, better fascial closure of the abdomen, and the creation of a stump which is more amendable to prosthetic fitting.

Carcinoma, Squamous Cell↗

Successful prosthetic fitting of a 73-year-old hip disarticulation amputee patient with cardiopulmonary disease.

Patients with hip disarticulation (HD) require high energy expenditure for successful prosthetic ambulation. Thus, older patients are rarely fitted with an HD prosthesis. To our knowledge there are no reports of gait analysis following successful prosthetic fitting of an elderly HD amputee patient with systemic cardiopulmonary disease. We report the case of successful prosthetic ambulation in a 73-year-old man with HD secondary to histiosarcoma and a medical history significant for stable angina, chronic obstructive pulmonary disease, and diabetes mellitus. The patient underwent gait training with an endoskeletal prosthesis and achieved ambulation to 400 feet with bilateral forearm crutches. Vicon kinematic gait analysis revealed a cadence of 44 steps/min (112 steps/min normal), and double support time of 47% (26% normal). Oxygen rate during ambulation (VO2) was 11.0 mL/kg/min at velocity of .35 m/sec, compared with published figures for ambulation in those with HD of 10.73 mL/kg/min at velocity of .93 m/sec. At 1-year follow-up, the patient continued to walk into church with the prosthesis. We conclude that a trial fitting of an HD prosthesis should be considered on an individual basis in elderly amputee patients.

Activities of Daily Living↗

A newly developed socket design for a knee disarticulation amputee who is an active athlete.

This case report describes a newly developed socket design for a world class knee disarticulation athlete. To meet the demands concerning especially the suspension of the prosthesis a new type of socket was developed. The socket is made from carbon fibres and polyaramid fibres and is designed with a slit in the socket creating a flexible flap. This allows the amputee to both increase and decrease the inner circumference of the socket, thereby allowing the amputee to adjust the socket to stump variations. According to the amputee the new design offers an excellent fit and enables him to concentrate fully on the technical aspects of the different disciplines.

Adult↗

The use of snowboard boot bindings in a hip disarticulation prosthesis.

This report describes a new technique for fastening a hip disarticulation socket. It was developed at the request of the patient who needed to fasten his prosthesis using only one hand, because of a left upper limb disability. Snowboard boot bindings were secured to the socket of the prosthesis and allowed it to be securely fastened and released using his dominant hand only. The design of the bindings permitted a high closing force with minimum one-handed effort by the user.

Adult↗

Knee disarticulation.

Knee disarticulation is a muscle balanced amputation level that can be used in patients with diabetes, peripheral vascular disease, and trauma. Patients who are capable of sitting in a chair retain an excellent platform for sitting, a lever arm for transfer, and are unlikely to have joint contractures develop. In patients who are ambulatory and have vascular disease and in patients with trauma, this amputation level provides a well padded residual limb that allows distal endbearing. The use of a four bar linkage prosthetic knee joint confers intrinsic knee joint stability during walking.

Adult↗

Restoration of walking ability with Syme's ankle disarticulation.

Ankle disarticulation is a function sparing amputation level used primarily in the treatment of diabetic foot infection and gangrene secondary to peripheral vascular disease. It also has a valuable role in amputation surgery because of trauma, when combined with a dynamic response, or energy-storing, prosthetic foot.

Amputation, Surgical↗

A patient with an electrical burn treated by modified bilateral hemipelvectomy and disarticulation of the right arm.

A 23-year-old Hispanic worker sustained an electrical injury to 45% of his body when a crane hit a power line. Amputations of both legs, with bilateral partial hemipelvectomies, were required. A disarticulation of the right arm at the shoulder was also preformed. Resection of necrotic bowel, debridement of 95% of the abdominal wall, and resection of the genitalia was eventually required, with later reconstruction of the abdominal wall. After wound healing was complete, the patient was fitted with Jobst garments. A customized bucket prosthesis with a temperature control, to allow sitting upright, was provided. An electric wheel chair and a myoelectronic prosthetic arm were supplied. Rehabilitation was begun early.

Abdominal Muscles↗