Biomechanical Study Comparing Pulvertaft, Double Side-to-Side, and Locking Side-to-Side Tendon Suture Techniques.

PURPOSE: In this study, we present a single-sided locking side-to-side (STS) suture technique as a possible alternative for the Pulvertaft weave in tendon transfers. The aim of the study was to compare the biomechanical characteristics of the single-sided locking STS reconstruction with Pulvertaft and double-sided nonlocking STS reconstructions. METHODS: Twenty-four human cadaveric extensor digitorum communis tendons and 24 flexor digitorum superficialis tendons were randomly assigned to 1 of 3 groups, resulting in a total of 8 flexor tendons and 8 extensor tendons per group: Pulvertaft, double-sided nonlocking STS, and single-sided locking STS reconstructions. Load to failure was measured with a tensile testing machine. Increase in cross-sectional area was used as a measure of bulkiness at the reconstruction site. RESULTS: In extensor tendons, single-sided locking STS reconstructions showed a higher load to failure than Pulvertaft reconstructions, whereas no difference was found in load to failure between single-sided locking and double-sided nonlocking STS reconstructions. In flexor tendons, single-sided locking STS reconstructions showed a higher load to failure than Pulvertaft reconstructions. However, load to failure of single-sided locking STS reconstructions was less than double-sided nonlocking STS reconstructions. In both extensor and flexor tendons, the percent increase in cross-sectional area at the reconstruction site was higher in Pulvertaft reconstructions than single-sided locking STS reconstructions, whereas no difference was found between single-sided locking STS and double-sided nonlocking STS reconstructions. CONCLUSIONS: Single-sided locking and double-sided nonlocking STS reconstructions are suitable alternatives to the Pulvertaft technique for tendon transfers owing to a higher strength and less bulkiness. Because load to failure of both STS reconstructions did not differ in extensor tendon transfers, the single-sided locking STS reconstruction seems especially suitable for extensor tendon transfers. CLINICAL RELEVANCE: This study provides anatomical evidence that the single-sided locking STS reconstruction yields a higher strength and is less bulky than the Pulvertaft reconstruction in tendon transfers.

Short-term and Long-term Clinical Results of the Surgical Correction of Thumb-in-Palm Deformity in Patients With Cerebral Palsy.

BACKGROUND: Thumb-in-palm deformity disturbs a functional grip of the hand in patients with cerebral palsy. Reported recurrence rates after surgical correction are contradicting and earlier studies are limited to short-term follow-up. Therefore, the aim of this retrospective clinical outcome study is to evaluate the success rate of surgical correction of thumb-in-palm deformity around 1 year and at a minimum of 5 years follow-up. In addition, long-term patient satisfaction of the treatment is evaluated. METHODS: Patients with cerebral palsy who underwent a surgical correction for their thumb-in-palm deformity between April 2003 and April 2008 at the Academic Medical Center in Amsterdam were included. All patients were classified into 4 categories according to the assessment system of the Committee on Spastic Hand Evaluation. The result of surgery was considered "short-term successful" and "long-term successful" when, respectively, short-term and long-term classification was better compared with preoperative. The association between the patient satisfaction outcomes and the long-term clinical outcomes were statistically analyzed. RESULTS: Data were collected from 39 patients and their charts. The success rate was 87% at short-term follow-up, which in the long term decreased to 80%. Interestingly, thumb position deteriorated in 29% of the patients between short-term and long-term follow-up. In the long term, 74% of the patients were satisfied with the position of their thumb and 87% would undergo the surgery again. Both these outcomes were statistically significant associated with the long-term success rate (P<0.05). CONCLUSIONS: The surgical correction of thumb-in-palm deformity has a high clinical success rate and patient satisfaction in the long term. However, it should be taken into account that the clinical result around 1 year postoperative cannot be considered final.

Long-term results of lateral band translocation for the correction of swan neck deformity in cerebral palsy.

PURPOSE: The aim of this study was to evaluate the long-term effect of lateral band translocation for correcting swan neck deformity in patients with cerebral palsy at a minimum follow-up of 5 years. METHODS: Swan neck deformities of 62 fingers were corrected using a modified lateral band translocation. At 1-year and 5-year follow-up, any recurrence of hyperextension was recorded through nonconstrained evaluation. Active extension of the proximal interphalangeal joint beyond 0 degree was considered a recurrence. RESULTS: Correction was successful for 84% of the operated fingers at 1-year follow-up. After 5 years, the success rate had decreased to 60%. Furthermore, no relationship was found between any of the concomitant surgical procedures and the number of patients with recurrences. CONCLUSIONS: The long-term result of lateral band translocation is disappointing in our series, and it should not be advocated as a procedure with long-lasting success in patients with cerebral palsy.

Specific volume of female subcutaneous abdominal tissue as a reference in autologous breast reconstruction.

Use of the deep inferior epigastric perforator (DIEP) flap is gaining popularity as the method of choice for breast reconstruction and replacement of prosthetic breast implants. Ideally, the volume of the prosthesis is replaced by the same volume of autologous tissue to restore shape and symmetry. Still, intraoperative tissue volumetry is not practical under sterile circumstances. The first step toward a clinical intraoperative measure for volume matching would be to acquire knowledge of the specific density of female subcutaneous abdominal fat tissue. The weight and volume of abdominoplasty specimens from 32 women were measured. From these data, the specific volume of DIEP flap tissue was calculated. The mean specific density was 1.12 mL/g (range, 1.02 to 1.32 mL/g; standard deviation 0.04). An approximate volume-to-weight conversion multiplier of 1.1 may serve as an intraoperative tool to estimate the volume of a DIEP flap from its weight.

Extensor pollicis longus rerouting for thumb-in-palm deformity in cerebral palsy: a biomechanical analysis.

Extensor pollicis longus rerouting is a common procedure to improve thumb abduction in thumb-in-palm deformity seen with spastic cerebral palsy. In 1985, Manske redirected the extensor pollicis longus tendon in this procedure through the first extensor compartment. They also proposed an alternative subcutaneous route around the extensor pollicis brevis and abductor pollicis longus tendons proximal to the extensor compartment. In this study, we performed a three-dimensional analysis of thumb motion on 11 cadaver arms with the subcutaneous route and the first extensor compartment route. We found that with the two different routing methods, the mean difference in thumb radial abduction and retropulsion (0° or 6°, respectively) was very small. Such differences are unlikely to have clinical relevance. We were unable to find significant differences in the motion range of the thumb after these rerouting techniques or sites of insertion. Our biomechanical data support the simpler subcutaneous route.

Assessment of Flexor carpi ulnaris function for tendon transfer surgery.

Active and passive length-force curves of spastic flexor carpi ulnaris (FCU) muscles were intra-operatively measured in 10 patients with cerebral palsy to study the variability in FCU muscle function. Maximum active FCU force was in general situated near the neutral position of the wrist and varied between 40 and 135 N. Passive forces varied between 1 and 8 N at maximum active force. The potential active excursion varied between 4 and 7 cm, while patients moved their wrists from flexion to extension along different parts of the active length-force curve. We measured a large inter-individual variety of spastic FCU muscle function in this group of patients. Thus, tailoring the surgical technique of tendon transfer to the specific needs of the desired function requires the assessment of muscle-specific data for each individual patient.

Effects of Upper-Extremity Surgery on Manual Performance of Children and Adolescents with Cerebral Palsy: A Multidisciplinary Approach Using Shared Decision-Making.

BACKGROUND: Little is known about the effects of upper-extremity surgery on the manual performance of children and adolescents with cerebral palsy (CP). This clinical cohort study describes our experience with patient selection based on multidisciplinary assessment and shared decision-making and the effects of upper-extremity surgery on manual performance and patient-relevant outcomes. METHODS: All patients (up to 20 years of age) with CP referred to our multidisciplinary team for evaluation for upper-extremity surgery between July 2011 and May 2017 were included. Suitability for upper-extremity surgery was assessed with comprehensive, multidisciplinary screening, and the decision to proceed with surgery was made together with the patient. Individual patient-relevant goals were identified with the Canadian Occupational Performance Measure (COPM); perceived independence in performing bimanual activities at home was assessed with the ABILHAND-Kids tool, and perceived quality of use of the affected hand during daily activities was assessed with a visual analog scale (VAS). The quality of use of the affected hand during bimanual performance was measured with the Assisting Hand Assessment (AHA), and gross manual dexterity was evaluated with the Box and Block Test (BBT). All baseline assessments were repeated at an average of 9 months after the surgery. RESULTS: Of 66 patients assessed by the multidisciplinary upper-extremity-surgery team, 44 were considered eligible for upper-extremity surgery. Of these patients, 39 (mean age and standard deviation [SD], 14.9 ± 2.10 years, 87% with unilateral CP, and 72% at Manual Ability Classification System [MACS] level II) underwent upper-extremity surgery and were evaluated in the pre-post study. All outcomes improved significantly after upper-extremity surgery, with average improvements of 3.1 ± 1.6 points in the COPM-Performance (COPM-P) score (p < 0.001), 3.3 ± 2.1 points in the COPM-Satisfaction (COPM-S) score (p < 0.001), 1.5 ± 1.2 logits in the ABILHAND score (p < 0.001), 2.4 ± 1.9 cm in the VAS score (p < 0.001), 6.7 ± 4.2 units in the AHA score (p < 0.001), and 2.2 ± 5.0 blocks/minute on the BBT (p = 0.021). The improvement in the COPM-P, COPM-S, ABILHAND, VAS, AHA, and BBT scores was clinically meaningful in 80%, 77%, 55%, 62%, 71%, and 31% of the patients, respectively. CONCLUSIONS: Careful assessment of eligibility for upper-extremity surgery, based on multidisciplinary screening and shared decision-making, resulted in a clinically relevant improvement in patient-specific functional and/or cosmetic goals and manual performance after upper-extremity surgery in most patients with CP. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

A microcosting study of the surgical correction of upper extremity deformity in children with spastic cerebral palsy.

OBJECTIVE: Determine healthcare costs of upper-extremity surgical correction in children with spastic cerebral palsy (CP). METHOD: This cohort study included 39 children with spastic CP who had surgery for their upper extremity at a Dutch hospital. A retrospective cost analysis was performed including both hospital and rehabilitation costs. Hospital costs were determined using microcosting methodology. Rehabilitation costs were estimated using reference prices. RESULTS: Hospital costs averaged €6813 per child. Labor (50%), overheads (29%), and medical aids (15%) were important cost drivers. Rehabilitation costs were estimated at €3599 per child. CONCLUSIONS: Surgery of the upper extremity is an important contributor to the healthcare costs of children with CP. Our study shows that labor is the most important cost driver for hospital costs, owing to the multidisciplinary approach and patient-specific treatment plan. A remarkable finding was the substantial amount of rehabilitation costs.

Palmar dislocation of the lunate bone with complete disruption of all ligaments. A report on two cases.

Complete disruption of the lunate from both dorsal and palmar ligamentous attachments caused by palmar dislocation has rarely been reported. The authors present two cases and discuss the surgical treatments performed. They conclude from these cases that the lunate is at risk for remaining avascular after such trauma, so that proximal row carpectomy should be considered as a surgical option in the primary treatment.

Unusual radial nerve injury by a locking compression plate for humerus fracture.

The management of primary and secondary radial nerve palsy associated with humeral shaft fractures is still controversial. Radial nerve function is likely to return spontaneously after primary as well as secondary radial nerve palsy in the absence of any level of neurotmesis. Identification and protection of the radial nerve during surgery may prevent secondary nerve palsy, but is not always performed and depends on the location of the fracture, and the experience and preference of the surgeon. We report a case of a healthy 40-year-old woman, referred to our hospital with a complete radial nerve palsy and a failed plate fixation of a right humeral shaft fracture. During exploration of the radial nerve and surgical revision of the fracture, we found the nerve entrapped by the plate and partially transected by a screw. Full recovery of radial nerve function occurred after neurolysis and microscopic neurorrhaphy.

[Effect of surgical treatment on patients with cerebral palsy: improvement of manual dexterity but not of perceived competence]. / Effect van chirurgische behandeling op patiënten met cerebrale parese: wel betere handvaardigheid, beleving competentie niet verbeterd.

OBJECTIVE: To examine the relationship between impaired manual dexterity and perceived competence in children with cerebral palsy and the effect of surgical intervention, with the question whether the perceived competence is applicable as an outcome measure for surgical reconstruction of hand function. METHOD: The Dutch version of the Michigan Hand Outcomes Questionnaire (MHQ-DLV) for perceived manual dexterity and the Dutch version of the Harter Scales for perceived competence were used in a sample of 25 children and adolescents with hemiplegic cerebral palsy of the spastic type. 10 patients underwent surgical treatment to improve hand function. In this 'surgical group' both questionnaires were repeated at least one year postoperatively. RESULTS: Perceived manual dexterity was low (mean MHQ-DLV-score: 63.2; SD: 18.9), as were the scores of perceived overall competence (2.92; SD: 0.84), social competences (2.66; SD: 0.92) and athletic competences (2.29; SD: 0.79). There was no correlation between the degree of perceived impairment in manual dexterity and the perceived competence (r = -0.16; p = 0.43). After surgical reconstruction manual dexterity improved (mean increase in score: 24; SD: 10.4; p < 0.01), but perceived competence did not improve (p = 0.39). CONCLUSION: Children with cerebral palsy and impaired manual dexterity did have a lower perceived competence than children without this disorder. The extent to which manual dexterity was impaired did not correlate with the extent to which perceived competence was lowered. Surgical intervention substantially improved perceived manual dexterity, but perceived competence did not improve. Perceived competence does not seem to be applicable as an outcome measure for surgical reconstruction of manual dexterity.

Clinical application and outcome of the segmental pectoralis major free flap in five head and neck patients.

BACKGROUND: Although microsurgical transplantation of the sternocostal segment of the pectoralis major muscle shares most of the advantages of the latissimus dorsi free flap, the latter has become a workhorse of microsurgery and the segmental pectoralis major free flap has not. By presenting their clinical experience with primary transplantations of this free flap to reconstruct craniofacial defects, the authors intend to draw more attention to its application and promote its use in reconstructive surgery. METHODS: Segmental pectoralis major free flaps were used for reconstruction of craniofacial defects in four male oncologic patients and one female trauma patient with a mean age of 55 years (range, 37 to 68 years). The donor-site morbidity was limited by preserving the clavicular muscle segment and its innervation. In one patient, only part of the sternocostal segment of the muscle was harvested, whereas in another, the free flap's vascular pedicle was anastomosed to the vascular pedicle of the contralateral pedicled pectoralis major flap. RESULTS: Total flap loss occurred in the one trauma patient and repeated surgery for wound-healing problems was required in one of the oncologic patients. Still, final flap outcome was favorable in four of the five patients. CONCLUSIONS: The segmental pectoralis major free flap is a useful and justifiable adjunct to the microsurgical techniques available for flat or wide craniofacial defects. It has the advantage over the latissimus dorsi flap of allowing a simultaneous two-team approach with the patient in supine position.

The results of surgical excision and adjuvant irradiation for therapy-resistant keloids: a prospective clinical outcome study.

BACKGROUND: There is no consensus on the best way to treat keloids, because adequate studies on this subject are sparse. Surgical excision in combination with radiotherapy is considered the most efficacious treatment available in severe keloids following the International Clinical Recommendations on Scar Management. Unfortunately, the recommendations are mainly based on retrospective studies that do not define recurrence. METHODS: The authors evaluated the recurrence rate of therapy-resistant keloids treated with excision followed by radiotherapy (1200 Gy in three or four fractions). The minimum follow-up period was 12 months. The therapeutic outcome was judged as recurrence (elevation of the lesion not confined to the original wound area) or nonrecurrence. An evaluation of the outcome of the scars was obtained by using the Patient and Observer Scar Assessment Scale. RESULTS: Twenty-one patients with 32 keloids were evaluated. The recurrence rate was 71.9 percent after a mean follow-up period of 19 months. CONCLUSIONS: This high recurrence rate suggests that radiotherapy might be less efficacious than suggested by other studies. On the basis of the authors' results, surgical excision combined with radiotherapy should be reserved as a last resort in the treatment of therapy-resistant keloids.