Study to Assess Outcome After Open and Closed Carpal Tunnel Decompression.

Carpal tunnel decompression (CTD) is the most commonly performed surgical procedure within a hand unit. We have analyzed data on outcomes after carpal decompression performed by both open and closed techniques to assess whether outcomes differed between the 2 procedures. Data were jointly gathered from 2 units. The aim was to assess the outcome after CTD. Completed data were gathered from 621 CTD procedures performed on 484 patients. Of the procedures, 358 were performed via a standard open CTD technique and 263 procedures were performed via a closed single-port Agee technique. Assessments were performed by means of the Levine-Katz questionnaire, Semmes-Weinstein monofilament testing, grip strength, and pinch-grip strength testing. Assessments were performed both preoperatively and 6 months postoperatively. A randomly selected 10% of patients were also assessed at 12 months. The results were statistically better after closed CTD at the 6-month postoperative stage. However, the difference became less marked by 12-month postoperative stage. Our results show that CTD whether performed by an open or closed technique resulted in a similar outcome at the 12-month postoperative stage. However, those procedures performed by a closed technique offered a more rapid recovery in the first 6 months postoperative than by an open technique.

The effect of distal radius translation in the coronal plane on forearm rotation: a cadaveric study of distal radius fractures.

PURPOSE: To determine the effect of lateral translation of the distal radius in the coronal plane on forearm rotation after distal radius fracture. METHODS: Ten fresh cadaveric limbs underwent distal radius osteotomy just proximal to the distal radial-ulnar joint to simulate an extra-articular distal radius fracture. We used an Agee Wrist Jack external fixator to create increasing magnitudes of distal fragment lateral translation in 2-mm increments. Forearm rotation was measured using a 3-dimensional camera at each magnitude of lateral translation. RESULTS: Total forearm rotation for the intact specimen and 2, 4, 6, and 8 mm (maximal) radial translations was 186° ± 53°, 188° ± 54°, 189° ± 55°, 190° ± 57°, and 193° ± 59°, respectively. There was no significant difference for any magnitude of radial translation. The average maximal radial translation possible before radioulnar abutment was 8 ± 0.5 mm. CONCLUSIONS: In this cadaveric model, translation of the distal radius fragment in the lateral direction had no effect on forearm rotation. CLINICAL RELEVANCE: At the level of the proximal border of the distal radioulnar joint, isolated distal radius translation does not significantly affect forearm rotation.

Valsalva maneuver: shortest optimal expiratory strain duration.

PURPOSE: To quantitate the level of difficulty and determine consistency of hemodynamic responses with various expiratory strain (ES) durations. METHODS: Thirty-four healthy subjects performed the Valsalva maneuver (VM) with an ES duration of 10, 12, and 15 seconds in random order. Level of difficulty after each trial was rated 1 to 10, with 10 being the most difficult. Blood pressure and heart rate (HR) were recorded continuously and non-invasively. Parameters studied were Valsalva ratio (VR), early phase II (IIE), late phase II (IIL), tachycardia latency (TL), bradycardia latency (BL), and overshoot latency (OV-L). Consistency of responses was calculated. RESULTS: DIFFICULTY INCREASED SIGNIFICANTLY WITH INCREASED ES DURATION: 5.1±0.1 (mean±SEM) at 10 seconds, 5.9±0.1 at 12 seconds, and 6.8±0.1 at 15 seconds (p<0.001). Phase IIE, TL, BL, OV-L, and VR response did not differ statistically with increasing ES durations, and there were no differences in variability. Phase IIL response increased significantly with increasing ES duration. Phase IIL was poorly delineated in 14 of 102 trials with 10 seconds ES duration. CONCLUSIONS: ES duration of 10 seconds created a low level of difficulty in healthy individuals. This strain duration produced consistent hemodynamic response for all parameters tested except IIL phase. The absence of IIL phase with 10 seconds ES should not be interpreted as an indicator of sympathetic vasoconstrictor failure.

Radiographic evaluation of the modified Brunelli technique versus the Blatt capsulodesis for scapholunate dissociation in a cadaver model.

PURPOSE: A variety of soft tissue surgical procedures have been developed for treatment of scapholunate (SL) dissociation. The purpose of this study was to compare the degree of correction obtained (as measured on preoperative and postoperative radiographs) when performing the modified Brunelli technique (MBT) with that of the more commonly performed Blatt capsulodesis (BC) and to evaluate each technique after simulated wrist motion. METHODS: Five cadaver wrists were used for this study. The SL interval, SL angle, and radiolunate angle were recorded radiographically, with the SL ligament intact, for each wrist in several loaded positions: neutral, flexion, extension, radial deviation, ulnar deviation, and clenched fist. The SL interosseous ligament was then completely incised, and the radiographic measurements were repeated to demonstrate SL instability. The radiographic measurements were then repeated after MBT reconstruction and after BC reconstruction. Additional radiographic measurements were taken after simulated wrist motion. RESULTS: Sectioning of the SL ligament resulted in radiographic evidence of SL dissociation. Use of the MBT demonstrated improved correction of the SL interval and the SL angle in the clenched fist position, which was statistically significant when compared with BC. The correction for the SL angle was maintained on the MBT specimens with simulated wrist motion. CONCLUSIONS: The results demonstrate that in this cadaver model, the MBT better restores the normal carpal relationship of the SL interval and SL angle when compared to the BC, as measured on radiographs. This correction might correlate with improved carpal dynamics and improved clinical outcomes.

Are standardized patient self-reporting instruments applicable to the evaluation of ulnar neuropathy at the elbow?

BACKGROUND: This study attempts to confirm that the Disabilities of Arm, Shoulder and Hand (DASH) Outcome Measure self-administered questionnaire is valid specifically for ulnar neuropathy at the elbow. Validity of the Levine-Katz questionnaire for ulnar neuropathology compared with DASH was also studied. MATERIALS AND METHODS: Forty-eight patients with isolated ulnar nerve surgery completed a 6-month evaluation. Patients were assigned a clinical stage. The DASH and Levine-Katz questionnaires were administered, and pinch and grip strength were measured preoperatively and postoperatively. Levine-Katz questionnaires were correlated with DASH to establish criterion validity. Construct validity was tested by determining a relationship between scores and clinical stages and by comparing scores preoperatively and postoperatively. RESULTS: There was a high correlation between DASH scores and symptom severity and functional status. Although correlations were significant between DASH and biomechanical measures, correlation coefficients were lower. Postoperatively, all measures improved significantly. CONCLUSION: This study confirms that scores on the DASH questionnaire reflect the clinical staging of ulnar neuropathy at the elbow.

Survival after in-hospital cardiopulmonary resuscitation.

BACKGROUND: The use of postarrest variables to predict survival after discharge following in-hospital cardiopulmonary resuscitation has not been definitive. This study evaluates whether the duration of cardiopulmonary resuscitation (CPR) and other variables affect discharge rates and survival rates after discharge. METHODS: Prospective cohort survival data and arrest variables were collected, including initial observed rhythm, duration of CPR, time of arrest, and number of arrests. Arrests on unmonitored general medical units, monitored telemetry units, and critical care units were included. Outcome measures were: survival after CPR, 24 hours post-CPR, survival to discharge, and to six months postdischarge. RESULTS: At both discharge and six months after discharge, ventricular fibrillation and ventricular tachycardia were associated with better survival rates than other initial rhythms (P < 0.001). There were significantly higher survival rates (P < 0.001) for those receiving CPR for < or =10 minutes as compared with those receiving CPR >10 minutes. Multiple versus single arrests and monitored versus unmonitored arrests approached significance. The time of day of the arrest was not a significant factor. CONCLUSIONS: Duration of CPR >10 minutes was predictive of significantly decreased survival to discharge and six months postdischarge. Low six-month survival rates may reflect the relatively high proportion of initial rhythms other than ventricular in the study group.

Primary care management of patients with carpal tunnel syndrome referred to surgeons: are non-operative interventions effectively utilised?

AIM: To investigate the non-operative primary care management (splintage, task modification advice, steroid injections and oral medications) of carpal tunnel syndrome before patients were referred to a hand surgeon for decompression. DESIGN AND SETTING: Preoperative data were obtained on age, gender, body mass index, employment, symptom duration, and preoperative clinical stage for patients undergoing carpal tunnel decompression (263 in the USA, 227 in the UK). RESULTS: Primary care physicians made relatively poor use of beneficial treatment options with the exception of splintage in the US (73% of cases compared with 22.8% in the UK). Steroid injections were used in only 22.6% (US) and 9.8% (UK) of cases. Task modification advice was almost never given. Oral medication was employed in 18.8% of US cases and 8.9% of UK cases. CONCLUSIONS: This study analyses the non-operative modalities available and suggests that there is scope for more effective use of non-operative treatment before referral for carpal tunnel decompression.

A prospective, longitudinal outcome study of patients with carpal tunnel surgery and the relationship of body mass index.

This study investigated whether body mass index (BMI) was associated with effectiveness of carpal tunnel release as measured by physical and self-assessment tests. This prospective, longitudinal study was conducted from March 2001 to March 2003 using 598 cases (hands) diagnosed with carpal tunnel syndrome and scheduled for surgery at The Curtis National Hand Center, Baltimore, Maryland, and at the Pulvertaft Hand Centre, Derby, England. Body mass index was calculated, and demographic, clinical, and functional data were collected preoperatively and at 6-month follow-up. Grip, pinch, and Semmes-Weinstein scores were measured preoperatively and at 6-month follow-up. Levine-Katz self-assessment scores for symptom severity and functional status were measured preoperatively and at 6-month follow-up. Grip and pinch increased, whereas Semmes-Weinstein, symptom severity, and functional scores decreased by 6-month follow-up. Cases with BMI >35 had lower grip strength and higher symptom severity in males and higher functional status in both sexes pre- and postoperatively compared to normal-weight BMI cases. BMI had no relationship to patient satisfaction. Although morbidly obese cases did worse on some physical and self-assessment tests compared to normal BMI cases preoperatively, all improved to the same extent postoperatively regardless of BMI.

Relationship between the duration and severity of symptoms and the outcome of carpal tunnel surgery.

PURPOSE: There is no consensus regarding the prognostic value of preoperative symptom severity and duration for determining the anticipated results of carpal tunnel release. Some studies show a detrimental influence of symptom duration and severity on outcomes; others have found no effect. To study these contradictions, a database was created at 2 separate hand centers to explore the extent to which the duration and severity of symptoms before surgery are predictive of surgical outcome. METHODS: At 2 hand centers 523 hands from the United States and United Kingdom completed surgery and follow-up evaluation. Symptoms, time of onset, duration, prior treatment, and medical history were recorded. Each patient had a physical examination and completed the Levine-Katz questionnaire. RESULTS: Symptom duration, corrected for gender, was not associated with Levine-Katz symptom severity, Levine-Katz functional status, or changes in these scores from the pretreatment to 6-month follow-up evaluations. CONCLUSIONS: Preoperative symptom duration does not affect the surgery outcome as determined by the Levine-Katz symptom severity or functional status scores. The more severe the symptoms as determined by patient self-assessment, the greater the amount of change in the Levine-Katz symptom severity and functional status scores, although at 6 months after surgery the scores were still higher than those of patients with milder cases.

Staged versus simultaneous bilateral endoscopic carpal tunnel release: an outcome study.

BACKGROUND: This study compared outcomes of bilateral simultaneous endoscopic carpal tunnel release to staged release using the Levine-Katz outcome instrument and physical measurements. METHODS: Seventy-one patients were evaluated preoperatively and at 6 months postoperatively. One group underwent simultaneous releases, a second group underwent staged releases 1 to 3 weeks apart, and a third underwent staged releases more than 3 weeks apart. Preoperative data included age, gender, race, medical history, initial symptom severity score, and body mass index. Preoperative and postoperative data included Semmes-Weinstein testing, grip and pinch strength, Tinel's sign, Phalen's test, Levine-Katz questionnaire, occupational history, postoperative complications, and patient satisfaction. RESULTS: Groups were similar demographically except that the simultaneous group had more men and patients were younger. Level of preoperative symptom severity was similar in all groups. Physical measurements were similar for all groups preoperatively and improved similarly at follow-up. All groups improved Levine-Katz mean symptom severity score and functional status score at follow-up. The groups had no significant difference in number of complications, and patient satisfaction was similar. CONCLUSIONS: In selected patients, bilateral simultaneous endoscopic carpal tunnel release has an outcome similar to that for surgery staged weeks apart. However, patients who choose simultaneous surgery may benefit from a shorter postoperative disability period and earlier return to work.

Assessment of four midcarpal radiologic determinations.

Several radiologic measurement methods have been described for determining static carpal alignment of the wrist. These include the scapholunate, radiolunate, and capitolunate angles. The triangulation method is an alternative radiologic measurement which we believe is easier to use and more reproducible and reliable than the above mentioned methods. The purpose of this study is to assess the intraobserver reproducibility and interobserver reliability of the triangulation method, scapholunate, radiolunate, and capitolunate angles. Twenty orthopaedic residents and staff at varying levels of training made four radiologic measurements including the scapholunate, radiolunate and capitolunate angles as well as the triangulation method on five different lateral, digitized radiographs of the wrist and forearm in neutral radioulnar deviation. Thirty days after the initial measurements, the participants repeated the four radiologic measurements using the same radiographs. The triangulation method had the best intra-and-interobserver agreement of the four methods tested. This agreement was significantly better than the capitolunate and radiolunate angles. The scapholunate angle had the next best intraobserver reproducibility and interobserver reliability. The triangulation method has the best overall observer agreement when compared to the scapholunate, radiolunate, and capitolunate angles in determining static midcarpal alignment. No comment can be made on the validity of the measurements since there is no radiographic gold standard in determining static carpal alignment.

Clinical utility of portable versus traditional electrodiagnostic testing for diagnosing, evaluating, and treating carpal tunnel syndrome.

Data indicate that a portable electrodiagnostic device (NC-Stat; Neurometrix, Inc, Cambridge, Mass) provides objective preoperative evidence of the severity of median nerve dysfunction as well as useful objective postoperative data. With traditional electrodiagnostic studies for comparison, we studied the utility of this device as a diagnostic tool, evaluated patient satisfaction with the instrument, and found statistically significant improvement in recorded distal motor latency at 6-month follow-up. Such data can be of great value in treating a patient who does not exhibit subjective symptom improvement. This portable electrodiagnostic device provides a reliable, convenient, and relatively inexpensive way to obtain objective data that can be used in diagnosing, evaluating, and treating carpal tunnel syndrome.

The effect of a literacy training program on family medicine residents.

BACKGROUND AND OBJECTIVES: Pediatric literacy promotion programs carried out in the primary care setting, such as Reach Out and Read (ROR), have been associated with improved language skills for preschool children. Primary care physicians have frequent contact with young families and may be well situated for a literacy promotion program for both children and adults. We examined whether introducing ROR and an adult literacy intervention improves family medicine residents' literacy knowledge, attitudes, and practices. METHODS: We conducted a single group pretest/posttest evaluation design study of residents in a family medicine residency program serving low-income families. Residents completed self-administered questionnaires assessing literacy knowledge, attitudes, and practice. Then, through educational conferences, precepting, and ROR, residents were trained to assess and counsel patients about literacy. The same questionnaire was readministered 8 months later. RESULTS: All 24 (100%) residents completed both the pre- and post-intervention questionnaires. Literacy knowledge mean scores increased from 74.5% to 83.1%. After the intervention, residents reported a greater sense of comfort in counseling about childhood and adult literacy. After the intervention, a greater proportion of residents reported usually or always asking about literacy milestones (30.2% to 79.2%) and parent-child reading (65.2% to 97.8%) during well-child visits. CONCLUSIONS: A family literacy promotion program improved family medicine residents' self-reported literacy knowledge, attitudes, and practices. Such interventions can be incorporated into the education of family medicine residents with meaningful results.

Immediate reconstruction after mastectomy for breast cancer does not prolong the time to starting adjuvant chemotherapy.

BACKGROUND: Immediate breast reconstruction is often performed after mastectomy for breast cancer. There has been concern that this will result in a delay in initiating chemotherapy and, as a consequence, may adversely impact survival. In this study we sought to determine whether immediate breast reconstruction affects the interval between surgery and adjuvant chemotherapy. METHODS: A single institution retrospective analysis was made using the institutional tumor registry and chart reviews. RESULTS: Forty-nine patients were identified who had undergone mastectomy with immediate reconstruction followed by adjuvant chemotherapy. They were compared with 308 patients undergoing mastectomy without reconstruction. Patients who underwent reconstruction were overall younger (46 versus 55, P <0.001), and had more advanced disease. The time to chemotherapy was significantly longer in the group receiving no reconstruction: 53 versus 41 days (P = 0.039). The type of reconstruction did not affect the time to chemotherapy. CONCLUSIONS: Immediate reconstruction after mastectomy does not increase the time to chemotherapy compared with mastectomy alone.