Accuracy of palpation-directed intra-articular glenohumeral injection confirmed by magnetic resonance arthrography.

PURPOSE: The aim of this study was to determine the accuracy of anatomic palpation-directed injections in the office setting. METHODS: Two hundred twenty-six shoulders in 208 patients were studied using a 0.2-Tesla extremity scanner after the injection of gadolinium-diethylene triamine pentaacetic acid-saline. All patients were injected in a sterile fashion by a single board-certified shoulder surgeon using an anterior approach by palpating the rotator interval anterior to the acromioclavicular joint and angling the needle 45° lateral and 45° caudad. All injections, successful or otherwise, were single injections. Magnetic resonance (MR) arthrograms were retrospectively read by 2 musculoskeletal fellowship-trained, board certified radiologists to determine whether the injection was in the glenohumeral joint. RESULTS: Two hundred one of the 226 injections were successful (88.9%). Of the 25 unsuccessful injections, the contrast material extravasated out of the capsule in 5 cases and into the subscapularis tendon in 10 cases. The contrast material was injected into the subacromial space in 9 cases, into the rotator interval fat in 9 cases, and into extracapsular tissue in 6 cases. There was insufficient volume of contrast material in 10 cases. The accuracy rate was 88.9%. There were no complications. CONCLUSIONS: The palpation-directed rotator interval anterior approach technique for intra-articular glenohumeral MR arthrogram injections performed by a single surgeon was 88.9% accurate. LEVEL OF EVIDENCE: Level IV, therapeutic case series.

Medical Leadership in Inpatient Rehabilitation Facilities in the United States.

OBJECTIVE: Inpatient rehabilitation facilities treat patients with extensive postacute care rehabilitation needs. Physiatrists are uniquely trained in the complexities of such patients; however, not all inpatient rehabilitation facilities use physiatrists as medical leadership. This study identifies the training background and credentials of medical directors in all inpatient rehabilitation facilities within the United States. DESIGN: Using Internet search, e-mail, and telephone communication, the following data were collected: medical director credential and specialty information, board certification rates and years of practice experience, as well as bed numbers for each inpatient rehabilitation facilities listed on The Centers for Medicare and Medicaid Services Website. Data were collected between November 2019 and November 2020. RESULTS: Of the 1114 open facilities, 85% have medical directors with a doctor of medicine degree, while 13% have a doctor of osteopathic medicine degree. Two percent reported no physician medical director. Physiatry is the most common specialty (80%), followed by internal medicine, family medicine, neurology, orthopedic surgery, general surgery, and medicine/pediatrics. The mean number of beds per facility is 35.6 (median, 24; range, 4-350). There is an average of 11.4 inpatient rehabilitation facility beds per 100,000 people nationally. CONCLUSIONS: Physiatry is the predominant specialty to fulfill medical leadership at inpatient rehabilitation facilities, although there remains room for growth. In addition, doctor of medicine degrees greatly outnumber doctor of osteopathic medicine degrees in medical leadership.

Patient Sleep Quality in Acute Inpatient Rehabilitation.

BACKGROUND: Sleep is an important component of neurorehabilitation. This study evaluates sleep quality in the acute inpatient rehabilitation setting and is the first to compare sleep quality in acute rehabilitation versus the acute care hospital and home settings. OBJECTIVE: To assess patient sleep quality in the acute inpatient rehabilitation setting. DESIGN: Cross-sectional survey study. SETTING: Acute inpatient rehabilitation unit. PATIENTS: Seventy-three patients admitted to the acute rehabilitation unit participated in the study. INTERVENTIONS: A validated sleep questionnaire was provided on admission regarding sleep at home and in the acute care hospital. The questionnaire was repeated on discharge from the acute rehabilitation unit regarding sleep during their rehabilitation admission. MAIN OUTCOME MEASURES: Visual analog scale of sleep depth, falling asleep, number of awakenings, percentage of time awake, and quality of sleep were obtained through use of the Richards-Campbell Sleep Questionnaire. These values were averaged to obtain "overall sleep perception." An additional question on environmental noise was added. Scores ranged from 0 for "worst sleep possible" to 100 for "best sleep possible." RESULTS: Patients reported significantly better sleep in all domains and overall in the acute rehabilitation unit compared to the acute care hospital, with the exception of percentage of time awake. Patients also reported significantly better sleep depth but worse noise in the acute rehabilitation unit when compared to home. Similarly, patients reported significantly better sleep in all domains and overall at home in comparison to the acute care hospital with the exception of percentage of time awake. CONCLUSIONS: Patient in the acute rehabilitation unit experience sleep quality that matches their experience at home and exceeds that in the hospital.

Interobserver Agreement in the Classification of Partial-Thickness Rotator Cuff Tears Using the Snyder Classification System.

BACKGROUND: At present, there is no widely accepted classification system for partial-thickness rotator cuff tears, and as a result, optimal treatment remains controversial. PURPOSE: To examine the interobserver reliability and accuracy of classifying partial rotator cuff tears using the Snyder classification system. We hypothesized that the Snyder classification would be reproducible with high reliability and accuracy. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: Twenty-seven orthopaedic surgeons reviewed 10 video-recorded shoulder arthroscopies. Each surgeon was provided with a description of the Snyder classification system for partial-thickness rotator cuff tears and was then instructed to use this system to describe each tear. Interrater kappa statistics and percentage agreement between observers were calculated to measure the level of agreement. Surgeon experience as well as fellowship training was evaluated to determine possible correlations. RESULTS: A kappa coefficient of 0.512 indicated moderate reliability between surgeons using the Snyder classification to describe partial-thickness rotator cuff tears. The mean correct score was 80%, which indicated "very good" agreement. There was no correlation between the number of shoulder arthroscopies performed per year and fellowship training and the number of correct scores. CONCLUSION: The Snyder classification system is reproducible and can be used in future research studies in analyzing the treatment options of partial rotator cuff tears.

Reliability and accuracy of digital templating for the humeral component of total shoulder arthroplasty.

BACKGROUND: This experimental study evaluated the interobserver reliability and accuracy of pre-operative digital templating for humeral head size, stem size and neck angle for total shoulder arthroplasty. METHODS: Twenty-five patients underwent a total shoulder arthroplasty with a single prosthesis. Four independent, blinded surgeons (two experienced shoulder surgeons and two PGY-6 fellows) used pre-operative radiographs and templating software to generate templates of the humeral head, stem and neck for each patient. Interobserver reliability was calculated using weighted kappa (κ) analysis. Accuracy was assessed by comparing templates to actual implant sizes. RESULTS: Interobserver reliability was fair to substantial (κ = 0.26 to 0.71) for head size, fair to substantial (κ = 0.39 to 0.72) for stem size and slight to fair (κ = 0.16 to 0.34) for neck angle. Templated head size, stem size and neck angle had accuracies of 53%, 77% and 68% within one size variation, respectively. Experience did not affect accuracy (p = 0.11 to 0.48). CONCLUSIONS: Digital templating is not a useful guide for pre-operative surgical planning and should not be used to select a prosthesis.

Analysis of Low-Field MRI Scanners for Evaluation of Shoulder Pathology Based on Arthroscopy.

BACKGROUND: Many studies have compared the diagnostic capabilities of low-field magnetic resonance imaging (MRI) scanners to high-field MRI scanners; however, few have evaluated the low-field MRI diagnoses compared with intraoperative findings. PURPOSE: To determine the accuracy and sensitivity of low-field MRI scanners in diagnosing lesions of the rotator cuff and glenoid labrum. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 3. METHODS: Over a 2-year period, MRI examinations without intra-articular contrast were performed on 79 patients for shoulder pathologies using an in-office 0.2-T extremity scanner. The MRI examinations were read by board-certified, musculoskeletal fellowship-trained radiologists. All patients underwent shoulder arthroscopy performed by a single sports fellowship-trained orthopaedic surgeon within a mean time of 56 days (range, 8-188 days) after the MRI examination. The mean patient age was 54 years (range, 18-81 years). Operative notes from the shoulder arthroscopies were then retrospectively reviewed by a single blinded observer, and the intraoperative findings were compared with the MRI reports. RESULTS: For partial-thickness rotator cuff tears, the sensitivity, specificity, positive predictive value, and negative predictive value were 85%, 89%, 79%, and 92%, respectively. For full-thickness rotator cuff tears, the respective values were 97%, 100%, 100%, and 98%. For anterior labral lesions, the values were 86%, 99%, 86%, and 99%, and for superior labral anterior-posterior (SLAP) lesions, the values were 20%, 100%, 100%, and 79%, respectively. CONCLUSION: Low-field MRI is an accurate tool for evaluation of partial- and full-thickness rotator cuff tears; however, it is not effective in diagnosing SLAP lesions. More information is needed to properly assess its ability to diagnose anterior and posterior labral lesions.

Humeral shaft fracture treatment in the elite throwing athlete: a unique application of flexible intramedullary nailing.

Humeral shaft stress fractures are being increasingly recognized as injuries that can significantly impact throwing mechanics if residual malalignment exists. While minimally displaced and angulated injuries are treated nonoperatively in a fracture brace, the management of significantly displaced humeral shaft fractures in the throwing athlete is less clear. Currently described techniques such as open reduction and internal fixation with plate osteosynthesis and rigid antegrade/retrograde locked intramedullary nailing have significant morbidity due to soft tissue dissection and damage. We present a case report of a high-level baseball pitcher whose significantly displaced humeral shaft stress fracture failed to be nonoperatively managed and was subsequently treated successfully with unlocked, retrograde flexible intramedullary nailing. The athlete was able to return to pitching baseball in one year and is currently pitching in Major League Baseball. We were able to recently collect 10-year follow-up data.

Analysis of Low-Field Magnetic Resonance Imaging Scanners for Evaluation of Knee Pathology Based on Arthroscopy.

BACKGROUND: In recent years, few studies have evaluated low-field magnetic resonance imaging (MRI) diagnoses compared with intraoperative findings of the knee. PURPOSE: To determine the accuracy and sensitivity of low-field MRI scanners in diagnosing pathology of the menisci, cruciate ligaments, and osteochondral surfaces. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: MRI examinations without intra-articular contrast were performed on 379 patients for knee pathologies over a 4-year period. The MRI examinations were done using a 0.2-tesla scanner utilizing a dedicated knee coil and read by 1 of 3 board-certified, musculoskeletal fellowship-trained radiologists. Within a mean time of 50 days after MRI, all patients underwent knee arthroscopy performed by 1 of 2 sports fellowship-trained orthopaedic surgeons. Operative notes from the knee arthroscopies were then reviewed by a single independent observer, and the intraoperative findings were compared with the MRI reports. RESULTS: For medial meniscus tears, the sensitivity, specificity, positive predictive value, and negative predictive value were 83%, 81%, 89%, and 71%, respectively. For lateral meniscus tears, the values were 51%, 93%, 84%, and 73%, respectively. For anterior cruciate ligament (ACL) tears, the values were 85%, 94%, 69%, and 97%, respectively. For osteochondral lesions, the values were 8%, 99%, 29%, and 94%, respectively. For posterior cruciate ligament (PCL) tears, the specificity and negative predictive value were 99% and 100%, respectively. CONCLUSION: Low-field MRI was an accurate tool for evaluation of medial meniscus and ACL tears. However, within the study population, it is not as effective in diagnosing lateral meniscus tears and showed a poor ability to detect osteochondral lesions. More information is needed to properly assess its ability to diagnose PCL tears.