Adequate visual clarity is paramount to performing arthroscopic shoulder surgery safely, efficiently, and effectively. The addition of epinephrine in irrigation fluid, and the intravenous or local administration of tranexamic acid (TXA) have independently been reported to decrease bleeding thereby improving the surgeon's visualization during arthroscopic shoulder procedures. No study has compared the effect of systemic administered TXA, epinephrine added in the irrigation fluid or the combination of both TXA and epinephrine on visual clarity during shoulder arthroscopy with a placebo group. The purpose of this study is to determine if intravenous TXA is a safe alternative to epinephrine delivered by a pressure-controlled pump in improving arthroscopic shoulder visualization during arthroscopic procedures and whether using both TXA and epinephrine together has an additive effect in improving visualization.

The design of the study was a double-blinded, randomized controlled trial with four 1:1:1:1 parallel groups conducted at one center. Patients aged ≥18 years undergoing arthroscopic shoulder procedures including rotator cuff repair, arthroscopic biceps tenotomy/tenodesis, distal clavicle excision, subacromial decompression and labral repair by five fellowship-trained upper extremity surgeons were randomized into one of four arms: Pressure pump-controlled regular saline irrigation fluid (control), epinephrine (1ml of 1:1000) mixed in irrigation fluid (EPI), 1g intravenous TXA (TXA), and epinephrine and TXA (EPI/TXA). Visualization was rated on a 4-point Likert scale every 15 minutes with 0 indicating ‘poor’ quality and 3 indicating ‘excellent’ quality. The primary outcome measure was the unweighted mean of these ratings. Secondary outcomes included mean arterial blood pressure (MAP), surgery duration, surgery complexity, and adverse events within the first postoperative week.

One hundred and twenty-eight participants with a mean age (± SD) of 56 (± 11) years were randomized. Mean visualization quality for the control, TXA, EPI, and EPI/TXA groups were 2.1 (±0.40), 2.1 (±0.52), 2.6 (±0.37), 2.6 (±0.35), respectively. In a regression model with visual quality as the dependent variable, the presence/absence of EPI was the most significant predictor of visualization quality (R=0.525; p < 0 .001). TXA presence/absence had no effect, and there was no interaction between TXA and EPI. The addition of MAP and surgery duration strengthened the model (R=0.529; p < 0 .001). Increased MAP and surgery duration were both associated with decreased visualization quality. When surgery duration was controlled, surgery complexity was not a significant predictor of visualization quality. No adverse events were recorded in any of the groups.

Intravenous administration of TXA is not an effective alternative to epinephrine in the irrigation fluid to improve visualization during routine arthroscopic shoulder surgeries although its application is safe. There is no additional improvement in visualization when TXA is used in combination with epinephrine beyond the effect of epinephrine alone.

Previously, we conducted a multi-center, double-blinded randomized controlled trial comparing arthroscopic Bankart repair with and without remplissage. The end point for the randomized controlled trial was two years post-operative, providing support for the benefits of remplissage in the short term in reducing recurrent instability. The aim of this study was to compare the medium term (3 to 9 years) outcomes of patients previously randomized to have undergone isolated Bankart repair (NO REMP) or Bankart repair with remplissage (REMP) for the management of recurrent anterior glenohumeral instability. The rate of recurrent instability and instances of re-operation were examined.

The original study was a double-blinded, randomized clinical trial with two 1:1 parallel groups with recruitment undertaken between 2011 and 2017. For this medium-term study, participants were reached for a telephone follow-up in 2020 and asked a series of standardized questions regarding ensuing instances of subluxation, dislocation or reoperation that had occurred on their shoulder for which they were randomized. Descriptive statistics were generated for all variables. “Failure” was defined as occurrence of a dislocation. “Recurrent instability” was defined as the participant reporting a dislocation or two or more occurences of subluxation greater than one year post-operative. All analyses were undertaken based on intention-to-treat whereby their data was analyzed based on the group to which they were originally allocated.

One-hundred and eight participants were randomized of which 50 in the NO REMP group and 52 in the REMP group were included in the analyses in the original study. The mean number of months from surgery to final follow-up was 49.3 for the NO REMP group and 53.8 for the REMP group. The rates of re-dislocation or failure were 8% (4/52) in the REMP group at an average of 23.8 months post-operative versus 22% (11/50) in the NO REMP at an average of 16.5 months post-operative. The rates of recurrent instability were 10% (5/52) in the REMP group at an average of 24 months post-operative versus 30% (15/50) in the NO REMP group at an average of 19.5 months post-operative. Survival curves were significantly different favouring REMP in both scenarios.

Arthroscopic Bankart repair combined with remplissage is an effective procedure in the treatment of patients with an engaging Hill-Sachs lesion and minimal glenoid bone loss (<15%). Patients can expect favourable rates of recurrent instability when compared with isolated Bankart repair at medium term follw-up.

While controversy remains as to the relative benefit of operative (OM) versus non-operative management (NOM) of Achilles tendon ruptures (ATR), few studies have examined the effect on high impact maneuvers such as jumping and hopping. The purpose of this study is to compare functional performance and musculotendinous morphology in patients following OM or NOM for acute ATR.

Eligible patients were aged 18-65 years old with an ATR who underwent OM or NOM within three weeks of injury and were at least one-year post injury. Gastrocnemius muscle thickness and Achilles tendon length and thickness were assessed with ultrasound. Functional performance was examined with single-leg hop tests and isokinetic plantar strength at 60o/s and 120o/s.

24 participants completed testing (12/ group). Medial (OM: 2.2 ± 0.4 cm vs 1.9 ± 0.3 cm, NOM 2.15 ± 0.5 cm vs 1.7 ± 0.5 cm; p = 0.002) and lateral (OM 1.8 ± 0.3 cm vs 1.5 ± 0.4 cm, NOM 1.6 ± 0.4 cm vs 1.3 ± 0.5 cm; p = 0.008) gastrocnemius thickness were reduced on the affected limb. The Achilles tendon was longer (OM: 19.9 ± 2.2 cm vs 21.9 ± 1.6 cm; NOM: 19.0 ± 3.7 cm vs 21.4 ± 2.9 cm; p = 0.009) and thicker (OM: 0.48 ± 0.16 cm vs 1.24 ± 0.20 cm; NOM: 0.54 ± 0.08 cm vs 1.13 ± 0.23 cm; p < 0.001) on the affected limb with no differences between groups. Affected limb plantar flexion torque at 20o plantar flexion was reduced at 60o/s (OM: 55.6 ± 20.2 nm vs 47.8 ± 18.3 nm; NOM: 59.5 ± 27.5 nm vs 44.7 ± 21.0 nm; p = 0.06) and 120o/s (OM: 44.6 ± 17.9 nm vs 36.6 ± 15.0 nm; NOM: 48.6 ± 16.9 nm vs 35.8 ± 10.7 nm; p = 0.028) with no group effect. There was no difference in single leg hop performance. Achilles tendon length explained 31.6% (p = 0.003) and 18.0% (p = 0.025) of the variance in plantar flexion peak torque limb symmetry index (LSI) at 60o/s and 120o/s respectively. Tendon length explained 28.6% (p=0.006) and 9.5% (p = 0.087) of LSI when torque was measured at 20o plantar flexion at 60o/s and 120o/s respectively. Conversely, tendon length did not predict affected limb plantar flexion peak torque (nm), angle-specific torque at 20o plantar flexion (nm) and affected limb single leg hop distance (cm) or LSI (%).

There was no difference in tendon length between treatment groups and deficits in gastrocnemius thickness and strength are persistent. Deficits in the plantar flexion strength LSI are partially explained by increased tendon length following Achilles tendon rupture, regardless of treatment strategy. Hop test performance is maintained and may be the result of compensatory movements at other joints despite persistent plantarflexion weakness.

Our primary objective was to compare healing rates in patients undergoing arthroscopic rotator cuff repair for degenerative tears, with and without bone channeling. Our secondary objectives were to compare disease-specific quality of life and patient reported outcomes as measured by the Western Ontario Rotator Cuff Index (WORC), American Shoulder and Elbow Surgeons (ASES) score and Constant score between groups.

Patients undergoing arthroscopic rotator cuff repair at three sites were randomized to receive either bone channeling augmentation or standard repair. Healing rates were determined by ultrasound at 6 and 24 months post operatively. WORC, ASES, and Constant scores were compared between groups at baseline and at 3, 6, 12 and 24 months post operatively.

One hundred sixty-eight patients were recruited and randomized between 2013 to 2018. Statistically significant improvements occurred in both groups from pre-operative to all time points in all clinical outcome scores (p < 0 .0001). Intention to treat analysis revealed no statistical differences in healing rates between the two interventions at 24 months post-operative. No differences were observed in WORC, ASES or Constant scores at any time-point.

This trial did not demonstrate superiority of intra-operative bone channeling in rotator cuff repair surgery at 24 months post-operative. Healing rates and patient-reported function and quality of life measures were similar between groups.

Musculoskeletal ultrasound (MSK-US) can have many uses for orthopaedic surgeons, such as assisting in clinical diagnosis for muscle, tendon and ligament injuries, providing direct guidance for joint injections, or assessing the adequacy of a reduction in the emergency department. However, proficiency in sonography is not a requirement for Royal College certification, and orthopaedic trainees are rarely exposed to this modality. The purpose of this project was to assess the usefulness in clinical education of a newly implemented MSK-US course in an orthopaedic surgery program.

A MSK-US course for orthopaedic surgery residents was developed by an interdisciplinary team involving a paediatric orthopaedic surgeon, an emergency physician with a fellowship in point-of-care ultrasonography, and an orthopaedic surgery resident. Online videos were created to be viewed by residents prior to a half-day long practical course. The online portion covered the basics of ultrasonography, as well as the normal and abnormal appearance of musculoskeletal structures, while the practical portion applied those principles to the examination, injection, and aspiration of joints, and ultrasound-guided fracture reduction. An online survey covering the level of training of the resident and their previous use of ultrasound (total hours) was filled by the participants prior to the course. Resident's knowledge acquisition was measured with a written pre-course, same-day post-course and six-month follow-up tests. Residents were also scored on a practical shoulder examination immediately after the course and at six-month follow-up. An online survey was also sent to evaluate residents' satisfaction with different aspects of the course (NAS). Change in test scores were calculated using an ANOVA and a Wilcoxon signed-rank test.

Ten orthopaedic surgery residents underwent the MSK-US curriculum. Pre-course interest to MSK-US was moderate (65%) and prior exposure was low (1.5 hours mean total experience). MSK-US has been previously mostly observed in the emergency department and sports orthopaedic clinic. Satisfaction with the online curriculum, hands-on practice session and general quality of the course were high (8.78, 8.70 and 8.60/10 respectively). Written test scores improved significantly from 50.7 ± 17% to 84 ± 10.7% immediately after the course (p < 0 .001) and suffered no significant drop at six months (score 75 ± 8.7%, p=0.303). Average post-course practical exam score was 78.8 ± 3.1% and decreased to 66.2 ± 11.3% at six months (p=0.012). Residents significantly improved their subjective comfort level with all aspects of ultrasound use at six months (p=0.007–0.018) but did not significantly increase clinical usage frequency.

A MSK-US curriculum was successfully developed and implemented using an interdisciplinary approach. The course was rated high quality and succeeded in improving the residents' knowledge, skills, and comfort with MSK-US. This improvement was maintained at six months on the written test, but did not result in higher frequency of use by the residents.

The purpose of this study was to quantify tibial tunnel enlargement at 3-, 6- and 12-months post-anterior cruciate ligament reconstruction (ACLR), and evaluate the magnitude of tunnel widening with use of a Poly (L-lactic Acid) interference screw (PLLA (Bioscrew XtraLok, Conmed, New York)) compared to a Poly (L-lactic Acid) + tricalcium phosphate interference screw (PLLA+TCP (GENESYS Matryx screw comprised of microTCP and 96L/4D PLA, Conmed, New York)).

This was a prospective randomized controlled trial with two parallel groups. Eighty unilateral ACL-deficient participants awaiting ACLR surgery were recruited between 2013 and 2017 from the clinic of a sole fellowship trained orthopaedic surgeon. Patients had to be skeletally mature and less than 45 years old, with no concomitant knee ligament injuries requiring surgery, chondromalacia, or previous history of ipsilateral knee joint pathology, surgery or trauma to the knee.

Participants were randomized intra-operatively into either the PLLA or PLLA+TCP tibial interference screw fixation group. Study time points were pre-, 3-, 6-, and 12-months post ACLR. Participants underwent x-rays with a 25 mm calibration ball, IKDC knee assessment, and completed the ACL-Quality of Life score (ACL-QOL) at each visit.

Measurement (mm) of the most proximal and distal extents as well as the widest point of the tibial tunnel were taken using efilm (IBM Watson Health) and were standardized relative to the calibration ball. A contrast inverter was used to determine clear borders based on contrast between normal and drilled bone. In addition, a subjective evaluation of the tunnel was conducted looking for bowing of the borders of the tunnel or change in tunnel shape, categorizing the tunnel as widened or not widened.

Differences between groups at each time point were evaluated using independent t-tests corrected for multiple comparisons. Tunnel width was also compared as a percentage of actual screw size at 12-months post-operative. Categorical data were compared using Fisher's Exact Test. Forty participants were randomized to each group with mean age (SD) of 29.7 (7.6) and 29.8 (9.1), for PLLA and PLLA+TCP, respectively. There were no differences between groups in age, gender or ACL-QOL.

There were no differences found between groups at any time point in either tunnel width measurements or tunnel width as a percentage of actual screw size. The greatest difference between groups was noted in the measurement of the widest point on lateral x-ray view with a mean difference of 11%. Based on subjective evaluation of tunnel shape, three participants had visible widening in the PLLA group, and two in the PLLA+TCP group (p=NS).

No differences in tunnel widening were identified between ACL reconstruction patients using a PLLA interference screw compared to a PLLA+TCP screw for tibial fixation up to 12-months post-operative.

Purpose

The development of skills in arthroscopic surgery is essential to the training of modern orthopedic surgeons. Few validated, objective tools exist which track improvement in arthroscopic skills. The purpose of this study was to validate an objective global assessment of arthroscopic skills employing videotape footage of diagnostic arthroscopy performed by participants of various skill levels on a cadaveric knee.

Purpose

Controversy exists regarding the optimal technique for arthroscopic rotator cuff repair. The purpose of this multicentre randomized double-blind controlled study was to compare the functional outcomes and healing rates of double-row suture techniques with single row repair.

Purpose

The majority (73%) of orthopaedic surgeons in Canada prefer using semitendinosus-gracilis (STG) autograft for ACL reconstruction. However, there is large variation in tendon size between individuals which makes pre-operative estimation of graft size unpredictable. Inadequate graft size may require an alternative source of graft tissue that should be planned prior to surgery. The purpose of this study is to determine if clinical anthropometric data and MRI measurements of STG tendons can be used to predict hamstring graft size.

Purpose

No knee-specific outcome measures have demonstrated reliability, validity or responsiveness in patients with multiligament knee injuries. Furthermore, the content validity of existing questionnaires has been challenged and remains unknown for patients with concomitant neurovascular injury. As a first step in developing a disease-specific outcome measure, the objective of this study was to identify items from existing knee questionnaires pertinent to patients with multiligament knee injuries using established a priori criteria.

Purpose: The development of confidence in the operating room is a major goal of surgical training. Confidence in surgery involves trusting information, intuition and experience. Confidence can also be detrimental when it impedes the ability to self-assess skills and decision-making. The measurement of confidence is difficult owing to the sequential acquisition of information and experience. The following study examines the trends in self-reported confidence in residents participating in cadaveric arthroscopic courses.

Method: In 2007 and 2008 residents participating in annual arthroscopic courses at the returned pre-course and post-course questionnaires recording previous arthroscopic exposure. Participants had access to fresh-frozen cadaver specimens and arthroscopic instruments for five hours after didactic lectures. Each participant rated perceived confidence and skill on a five-point Likert scale before and after the course. Mean confidence was compared using a student’s t-test. Data were further analysed using linear regression of pre – and post-course Likert scores.

Results: Residents showed a significant increase in self-perceived confidence in the performance of meniscal repair, anterior cruciate ligament reconstruction and labral repair and subacromial decompression directly after an arthroscopy course (p< 0.01). Regression analysis yielded a y-intercept not significantly different from zero prior to the course with a significant increase in the intercept after the course. There was no significant difference in the relationship of increasing arthroscopic experience to training noted as a result of the course.

Conclusion: Novice residents appeared to gain more self-reported confidence than experienced residents following an arthroscopic skills course. Future courses should consider the separation of novice and experienced residents to focus on improving the self-perceived confidence of experienced residents while exposing novice residents to the complexities of arthroscopic techniques. More research is needed to increase the understanding of the effects of confidence on trainees at various stages of training.

Purpose: Damage to the infrapatellar branch of the saphenous nerve and subsequent loss of sensation following graft harvest in ACL reconstruction is common. An oblique incision, rather than a vertical incision, has been shown to reduce the incidence and area of sensory loss following graft harvest [1] although the results are not universal. The purpose of this study was to determine if there was a difference in the area of infrapatellar neuritis (IFPN) and quality of life (QOL) between ACL patients that received a vertical – (VI) versus oblique-incision (OI) for hamstring tendon harvest.

Method: An interim analysis of a single-blinded randomized controlled trial (N=100) was conducted. Patients with clinical – and/or MRI-evidence of an ACL tear and no previous injury to the knee or surrounding soft tissues (including skin) were consented. Participants completed an ACL-QOL questionnaire pre-operatively, were randomized intra-operatively, and returned for follow-up at 1.5-, 6-, 12 – and 24-months to trace altered area of skin sensation and complete an ACL-QOL questionnaire. The area of altered skin sensation was quantified with ImageJ (NIH) software. The intention-to-treat principle was applied and a student’s t-test was used for statistical analysis. (p< .05).

Results: An interim analysis of 25 patients with a follow-up of 6 – to 24-mo demonstrated that the VI group (79.1 ± 15.6 cm2) had a greater affected area than the OI group (10.9 ± 3.5 cm2), no difference in ACL-QOL scores was evident.

Conclusion: Based on the difference in morbidity between the two groups, and similar results in a previous study (2), OI incision for graft harvest is recommended.

Purpose: The hypothesis of this randomized controlled trial is patients undergoing ACL reconstruction using contralateral hamstring harvest will have better quality of life and strength than using ipsilateral graft.

Method: One hundred participants were assigned to the ipsilateral (IG) or contralateral (CG) group. Primary and secondary outcomes were ACL Quality of Life (ACL-QOL) and concentric isovelocity knee flexion/extension strength measured on a dynamometer at five speeds. Data was gathered pre-surgery, and at 3, 6, 12, and 24 months post-surgery. Findings to 12 months are presented.

Results: ACL-QOL scores and knee flexion/extension strength were not significantly different between groups across time. Comparing side-to-side strength within each group, knee extension strength was consistently higher on the non-reconstructed side. In the IG, there were no side-to-side differences in knee flexion strength. In the CG, flexion on the reconstructed side was stronger than the grafted side early post surgery (3, 6 months) at 60 degrees/s, but this pattern was reversed at 90, 150, and 210 degrees/s. Post-hoc comparisons revealed hamstring/ quadriceps (H/Q) ratios were not different between limbs in the CG or for the uninvolved limb for the IG. However, at most time points and speeds, the H/Q ratio for the involved limb in the IG was higher than the uninvolved limb in the IG and either limb in the CG.

Conclusion: This study reveals that ipsilateral graft harvest may alter the H/Q ratio. It was also demonstrated that contralateral graft harvest may normalize this effect. This may have some bearing on function and re-injury risk that should be further investigated.

Purpose: This research project compared the accuracy of 3 methods of meniscal injury diagnosis that are commonly employed in a clinical orthopaedics: Clinical examination, MRI and Arthroscopic surgery.

Method: A retrospective review of charting was used to collect meniscal injury assessment data for 116 patients that had sustained an acute anterior cruciate ligament injury to one knee. Sixty-eight of the 116 patients had the presence of a meniscal lesion confirmed via surgery. Sensitivity and specificity of “hands on” clinical examination and MRI interpretation were determined using the results of arthroscopic surgery as the gold standard. Sensitivity and specificity of “hands on” clinical examination relative to MRI interpretation was also calculated. Finally, the findings of all three methods of meniscal evaluation were compared.

Results: Accuracy testing demonstrated that the sensitivity and specificity of clinical examinations (0.54 / 0.81) was comparable to levels observed for MRI (0.69 / 0.70), and when directly comparing the findings of clinical examination against MRI, that there was a high level of agreement when a meniscal lesion was not present (specificity: 0.91), but a much lower level of agreement when a meniscal lesion was suspected (sensitivity: 0.54). In general, when comparing the findings from clinical examination, MRI, and arthroscopic surgery, complete agreement among all 3 methods of evaluation occurred in only 51% of the patients.

Conclusion: Our results serve to highlight the inaccuracies associated with meniscal injury assessment when evaluating an acutely traumatized knee joint, and suggest that the incidence of secondary joint trauma following ligament injury may be under predicted.

Purpose: Performing a labral repair alone in patients with recurrent anterior instability and a large glenoid defect has led to poor outcomes. We present a technique involving the use of iliac crest allograft inserted into the glenoid defect in athletes with recurrent anterior shoulder instability and large bony defects of the glenoid (> 25% of glenoid diameter) We hypothesized that restoring a near-normal glenoid structure would prevent further dislocations and that osseous union would be achieved

Method: All athletes with recurrent anterior shoulder instability and a large glenoid defect who underwent open anterior shoulder stabilization and glenoid reconstruction with iliac crest allograft were prospectively followed over a three year period. Pre-operatively, a detailed history and physical exam was obtained along with radiographs, a CT scan, and magnetic resonance imaging of the affected shoulder. All patients also complete the Simple Shoulder Test (SST) and American Shoulder and Elbow Surgeons (ASES) evaluation forms pre – and post-operatively. A CT scan was again obtained 6 months post-operatively to assess osseous union of the graft, and the patient again when through a physical exam in addition to completing the SST, ASES, and Western Ontario Shoulder Instability Index (WOSI) forms.

Results: Nine patients (all male) were followed for an average of 16 months (4 – 36 months) and had a mean age of 24.4 years. All patients exhibited a negative apprehension/ relocation test and full shoulder strength at final follow-up. Eight of nine patients had achieved osseous union at six months (88.9%). ASES scores improved from 64.3 to 96.7, and SST scores improved from 66.7 to 100. Average post-operative WOSI scores were 94%.

Conclusion: The use of iliac crest allograft provides a safe and clinically useful alternative compared to previously described procedures for recurrent shoulder instability in the face of glenoid deficiency

Purpose: The increasing number of ACL reconstructions has led to the introduction of new techniques irrespective of the fact optimal tunnel angle placement has yet to be established. Improper tunnel angle placement is associated with a variety of complications including graft failure. The purpose of this retrospective study was to compare the reliability of tibial tunnel angles produced by two experienced surgeons using a free hand method or mechanical guide (HowellTM 65° Tibial Guide).

Method: Tibial tunnel angles in the coronal and sagittal planes were determined from anteroposterior and lateral radiographs, respectively, taken at 2 to 6 months postoperatively. Fifty-two sets of digital radiographs were analyzed (free hand = 28, mechanical = 24) with the knee in full extension 100 cm from the beam source. Tunnel angle measurements were calculated using NIH ImageJ software. Each angle was measured by two investigators on three separate occasions with minimum 7 days between each analysis.

Results: There was a significant difference (p< 0.05) in tibial tunnel angle placement between the mechanical guide (64.76 ± 5.88) and free hand (61.11 ± 5.04) group in the coronal plane. No significant difference in tibial tunnel placement in the sagittal plane was detected (mechanical guide =73.63 ± 7.69, free hand = 73.51 ± 6.68). Intra-rater and Inter-rater reliability for measurements in the sagittal (ICC = 0.809; 0.733) and coronal (ICC = 0.69; 0.812) plane ranged from high (> 0.75) to moderate (0.75–0.40), respectively.

Conclusion: Tibial tunnel angles in the coronal plane produced with a mechanical guide are more accurate than those drilled free hand when the intended angle of placement is 65°. The method used to measure tibial angles in this study was reliable within and between investigators. Further research will be conducted to investigate the correlation between tunnel angle placement and patient outcome measures.

Purpose: To describe the current practices and opinions of members of the Canadian Orthopaedic Association (COA) pertaining to anterior cruciate ligament (ACL) reconstruction.

Method: All orthopaedic surgeon members of the COA residing in Canada were sent an email invitation to take part in a survey via an internet-based survey manager. Expanding on a previously published survey (Marx et al., 2003), the current survey was comprised of 30 questions regarding the natural history of ACL-injured knees, surgical and post-surgical treatment choices, and success of the surgery. Clinical agreement was defined as greater than 80% agreement in choice of response option.

Results: Two hundred and eighty-three surgeons (49.3%) responded to the survey. Responses of the 143 surgeons (50.5%) who indicated they performed ACL reconstruction in the last year are presented. Clinical agreement with respect to surgical technique was demonstrated with respect to only three practices – ipsilateral graft harvest (100%), single incision approach (86.1%), and manual graft tensioning (81.6%). In terms of natural history, the only area of agreement was that hamstring and quadriceps strength affects function in ACL deficient knees (92%). Although less than the clinical agreement threshold, a majority of surgeons indicated their preference for semitendinosis-gracilis autograft (73%), transtibial versus anteromedial portal for establishment of the femoral tunnel (65 versus 29%), notch-plasty (65% only with impingement) and promotion of full weight-bearing and range of motion immediately post-surgery (72.1 and 74.8%, respectively). The most frequent surgeon-reported complications were tunnel widening (9.8%) and graft failure (4.4%). A greater proportion of high-volume surgeons used a manual tensioning device intra-operatively and permitted earlier return to sport (p< 0.05).

Conclusion: In the rapidly evolving area of ACL reconstruction, no recent survey of practices and opinions of orthopaedic surgeons has been published. The current survey is more extensive than others conducted to date and attempts to involve all practicing orthopaedic surgeons in Canada. In addition to providing information from a Canadian perspective, such an undertaking allows surgeons to evaluate their treatment decisions based on those of their colleagues, and also presents areas of dissimilarity that can be targeted for more extensive research.

Purpose: Few studies have investigated the relationship between patients requiring rotator cuff surgery and their body mass index (BMI). The objective of this retrospective study was to evaluate the association between BMI and pre-operative pain and function in patients awaiting rotator cuff repair surgery as measured by the American Shoulder and Elbow Surgery (ASES) form and Simple Shoulder Score (SST). A second objective was to evaluate the role of several other factors in predicting patient pre-operative scores.

Method: Patients selected for this study were those who underwent arthroscopic rotator cuff repair performed by the same surgeon between 2002 and 2007. Their medical record included documentation of age, height, weight, smoking status, worker’s compensation status (WCB), and pre-operative ASES and SST scores. Correlation between BMI and ASES and SST scores was performed to determine the association between these variables. In addition, multiple stepwise regression was performed to assess the predictive value of other demographic and lifestyle factors.

Results: Fifty-four patients were included in the study (39 men, 15 women). No significant correlation was found between BMI and either ASES or SST scores. Based on multiple regression analysis, only WCB status was identified as a significant predictor of pre-operative ASES score (p=0.003) while sex, age, BMI, and smoking status were not. Patients with WCB claims had lower ASES scores than those without. Sex was found to have the strongest association with SST scores (r2 = 0.502) with men having greater SST scores than women. The model with the most significant value in predicting SST scores included sex, WCB and smoking status (r2 -= 0.640). Patients that did not fall under a WCB claim and were non-smokers had better SST scores pre-operatively.

Conclusion: BMI did not have a significant relationship to ASES and SST scores in patients awaiting rotator cuff repair surgery. A prospective study including pre- and post-surgical follow-up and a detailed analysis of the role between BMI and other demographic and lifestyle factors would be beneficial. Such a risk factor analysis may shed light on the indications for rotator cuff surgery or non-operative management, depending on the patient population.

Purpose: The diagnosis and treatment of superior labral antero posterior (SLAP) lesions is a controversial subject in shoulder pathology. The aim of this retrospective study was to evaluate the strength of association between clinical assessment (O’Brien test), standard MRI, and arthroscopic identification of a SLAP lesion.

Method: Patients who underwent isolated arthroscopic treatment of a SLAP lesion by two senior orthopaedic surgeons between 2004 and 2007 were included in this study. Pre-operatively, all had a standard MRI and the outcome of O’Brien test had been documented. Sensitivity of these measures in detecting a SLAP lesion confirmed through arthroscopy were calculated independently and combined. The relationship between O’Brien test and standard MRI are also presented.

Results: Forty-five patients were included in this study. The O’Brien test demonstrated a sensitivity of 42% (true positive) in detecting a SLAP lesion while sensitivity of the standard MRI was only 13%. The sensitivity of the O’Brien test and standard MRI when considered together was 47%, only slightly higher than the O’Brien test alone. The association between the O’Brien test and standard MRI in identifying a SLAP lesion as measured by the phi correlation coefficient was −0.19 which suggests little to no relationship (p = 0.095).

Conclusion: The current study illustrates the difficulties in accurately diagnosing a SLAP lesion pre-operatively. Previously documented sensitivity of the O’Brien test in identifying a SLAP lesion was not replicated herein. Furthermore, this study draws into question the practice of patient’s undergoing a standard MRI for SLAP lesion identification because the added value from this investigation was nominal. A standard MRI is often requested when the diagnosis is not certain or to exclude other shoulder pathology. If, however, a SLAP lesion is suspected clinically in absence of other shoulder pathology, then a diagnostic tool other than standard MRI may be more meaningful. Some literature suggests MRI arthrogram may be useful in diagnosing a SLAP lesion but access to this tool can be limited.