Simultaneous bilateral hallux valgus surgery: Percutaneous or conventional? Early results of a matched study from a tertiary institution.

BACKGROUND: Hallux valgus is bilateral in up to 84 % of cases. In the setting of simultaneous bilateral correction, we aim to evaluate if minimally invasive percutaneous surgery (MIS) provides any advantage compared to conventional open surgery. METHODS: 52 feet (26 patients) undergoing simultaneous bilateral MIS surgery were matched by severity of deformity to 52 feet (26 patients) undergoing simultaneous conventional open surgery. Patients were followed for a minimum of six months. Pre- and post-operative radiographs and clinical records were reviewed. RESULTS: There were no significant differences in pre-operative function or pain between both groups. Post-operatively, the mean hallux valgus angle (HVA) was significantly lower in the MIS group. (HVA MIS - 8.6; Open - 11.8, P = 0.013). There were no significant differences in post-operative outcome and patient satisfaction between both groups. CONCLUSION: This study demonstrates that simultaneous bilateral MIS hallux valgus surgery can be considered for patients with bilateral symptomatic hallux valgus.

Health-related quality-of-life improvement after hallux valgus corrective surgery.

BACKGROUND: Hallux valgus is a common forefoot deformity that affects function of foot and quality of life (QoL). This study aims to identify factors associated with clinically important improvements in QoL after hallux valgus corrective surgery. METHODS: A retrospective analysis on 591 cases of hallux valgus corrective surgery performed between 2007 and 2013 was conducted. Patients' preoperative and 2-year postoperative Physical Component Score (PCS) and Mental Component Score (MCS) were compared to identify the presence of clinically significant improvements in patient-reported QoL. A multiple logistic regression model was developed through a stepwise variable-selection model building approach. Age, BMI, preoperative patient reported outcome score, PCS, MCS, pain score, gender, side of surgery, type of surgery, and presence of lesser toe deformities or metatarsalgia were considered. RESULTS: Median PCS significantly improved from 49 to 53 (p < 0.001), and median MCS remained at 56 (p = 0.724). Age, preoperative MCS and PCS were independent predictors for significant improvements of PCS at 2-year postoperatively. CONCLUSION: Three groups of patients were more likely to have significant QoL improvements after hallux valgus corrective surgery. These were the younger patients, those with better preoperative mental health or those with poorer preoperative physical health. LEVEL OF EVIDENCE: III.

Can patients with psychological distress achieve comparable functional outcomes and satisfaction after hallux valgus surgery? A 2-year follow-up study.

BACKGROUND: This study assessed the influence of preoperative mental health on functional outcomes and satisfaction, and the change in mental health after hallux valgus surgery. METHODS: 383 patients who underwent scarf osteotomy were analyzed. Visual analogue scale (VAS), American Orthopaedic Foot & Ankle Society score (AOFAS) and SF-36 were assessed at 6 months and 2 years. The cohort was stratified into patients with and without psychological distress (i.e. SF-36 Mental Component Summary [MCS] <50 vs ≥50). RESULTS: After adjusting for demographics and baseline scores, VAS and AOFAS were poorer in the distressed group at 6 months. However, there was no difference in scores at 2 years and a similar proportion of patients were satisfied. SF-36 MCS in distressed patients significantly improved, but remained lower compared to non-distressed patients at follow-up. CONCLUSIONS: Patients with psychological distress undergoing hallux valgus surgery had poorer short-term outcomes, but these differences resolved at 2 years.

Distal oblique osteotomy versus cheilectomy for moderate-advanced hallux rigidus: A 2-year propensity-score-matched study.

BACKGROUND: The surgical treatment of moderate-advanced hallux rigidus is controversial. Cheilectomy is widely used but has recurrence rates of up to 30%. Dorsal oblique metatarsal osteotomy (DOO) has also shown good results, however, there is no study comparing outcomes of the DOO against cheilectomy. METHODS: This was a retrospective propensity score matched study based on registry data from a single tertiary institution. Between 2007 and 2017, all patients who had undergone dorsal cheilectomy or DOO for hallux rigidus were included. Patients with previous foot surgery, revision surgeries, and concomitant surgical procedures were excluded. Clinical outcomes, complication rates, revision rates and patient satisfaction were assessed at 2 years postoperatively. RESULTS: There were 44 patients (34 cheilectomy, 10 DOO). After propensity score matching, 17 cheilectomy and all 10 DOO cases were selected for comparison. Patients in both groups had a significant improvement in visual analogue pain scores (VAS) and AOFAS 1st toe scores 2-years post-operatively (P<0.001) with high levels of post-operative satisfaction (85.1%). Overall there were no statistically significant differences in post-operative scores, improvement in scores, complication rates, revision rates, and levels of patient satisfaction between groups. CONCLUSIONS: Both the DOO and cheilectomy give similarly good outcomes for moderate-advanced hallux rigidus. Further studies are needed to elucidate differences in indications for each procedure.

Defining the patient acceptable symptom state for the American Orthopaedic Foot & Ankle Society score following hallux valgus surgery.

BACKGROUND: This study aimed to define the patient acceptable symptom state (PASS) for the American Orthopaedic Foot & Ankle Society score (AOFAS) following hallux valgus surgery. METHODS: 548 patients underwent hallux valgus surgery and had AOFAS assessed preoperatively, 6 months and 2 years postoperatively. Responses to an anchor question were used as external criterion in receiver operating characteristics (ROC) analyses to define PASS thresholds. RESULTS: In total, 429 patients (78.3%) reported their current state as acceptable. Areas under the curve (AUC) for ROCs were 0.71-0.81 for all analyses. PASS threshold was 88.5 at 2 years (sensitivity 64%, specificity 85%). Sensitivity analyses revealed that the threshold was robust. CONCLUSIONS: Patients with an AOFAS of 88.5 consider their postoperative symptom state to be acceptable. This knowledge will enable clinicians to identify patients who have attained a satisfactory functional status after hallux valgus surgery.

Results of Hallux Valgus Surgery in Diabetic Patients With Good Glycemic Control.

BACKGROUND: Literature is sparse on whether diabetes affects outcomes of hallux valgus surgery. With the rising global prevalence of diabetes and diabetes being an independent predictor of poorer outcomes, particularly in foot and ankle surgery, we aimed to investigate the impact of diabetes on the outcomes of hallux valgus surgery. METHODS: We conducted a retrospective comparative cohort study of prospectively collected registry data of 951 feet in 721 patients who underwent surgery for symptomatic hallux valgus between 2007 and 2015 at our institution. All patients with diabetes were identified and matched with patients without diabetes for age, sex, and body mass index in a 1:2 ratio to construct the matched cohorts for analysis. Glycemic control in the diabetic cohort was assessed using preoperative HbA1c. The primary outcome measure was complication rates. Secondary outcomes were (1) deformity correction using the hallux valgus and intermetatarsal angles; (2) patient-reported outcomes using visual analog scale (VAS) for pain, Short Form-36 (SF-36) Physical and Mental Health subscales, and American Orthopaedic Foot & Ankle Society (AOFAS) scores; (3) patient satisfaction; and (4) reoperation rates up to 2 years postoperatively. Forty diabetic patients were identified and matched to 80 nondiabetic patients. Although matching was only performed for age, sex, and body mass index, the diabetic and the nondiabetic cohorts were also similar in hallux valgus severity, preoperative scores, and types of procedures performed. RESULTS: The mean preoperative HbA1c in our diabetic cohort was 7.1%. Both the diabetic and nondiabetic cohorts showed excellent AOFAS and VAS scores with no differences in degree of deformity correction, complication profiles, reoperation rates, outcome scores, and satisfaction at both 6 months and 2 years postoperatively. CONCLUSION: We believe stringent patient selection was key to reduced complication rates and good outcomes in diabetic patients. Well-selected diabetic patients remain suitable candidates for hallux valgus surgery. LEVEL OF EVIDENCE: Level III, retrospective comparative study.

Effect of Severity of Deformity on Clinical Outcomes of Scarf Osteotomies.

BACKGROUND: Literature is sparse on whether severity of hallux valgus affects outcomes of surgery. We thus aimed to evaluate the impact of hallux valgus severity on the clinical outcomes of surgery. METHODS: 83 consecutive scarf osteotomies performed by a single surgeon for symptomatic hallux valgus between 2007 and 2011 were divided into 3 groups (mild, moderate, and severe) based on severity of their preoperative hallux valgus using the hallux valgus and intermetatarsal angles. Outcomes were assessed using the visual analog scale (VAS) for pain, 36-Item Short Form Health Survey physical functioning (SFPF) and mental health (SFMH) subscales, and American Orthopaedic Foot & Ankle Society (AOFAS) ankle-hindfoot scores. These were assessed preoperatively and at 6 months and 2 years postoperatively. Patient satisfaction was assessed at 6 months and 2 years postoperatively. Eleven (13.2%), 54 (65.1%), and 18 (21.7%) feet were in the mild, moderate, and severe groups, respectively. RESULTS: There was no difference in preoperative VAS, SFPF, SFMH and AOFAS scores between the groups except for AOFAS scores for the second toe, which were poorer with increasing hallux valgus. Postoperatively, there was improvement across all outcome scores. VAS and AOFAS showed excellent scores, and patient satisfaction was high across all 3 groups (88.9%, 89.4%, and 86.7%). The severe group had slightly lower SFPF scores at 6 months (mild, 81.1; moderate, 84.0; severe, 74.3; P = .031) and 2 years postoperatively (mild, 93.4; moderate, 89.7; severe, 76.4; P = .005), and slightly poorer second toe scores for VAS (mild, 0.0; moderate, 0.1; severe, 1.2; P = .017) and AOFAS (mild, 94.7; moderate, 93.5; severe, 83.4; P = .043) at 2 years postoperatively. All other scores including patient satisfaction showed no between-group differences. Complication and revision rates between the groups were similar. CONCLUSION: Surgery for symptomatic hallux valgus lead to excellent outcomes and high patient satisfaction regardless of severity of deformity. LEVEL OF EVIDENCE: Level III, comparative series.

Clinical outcomes comparing arthroscopic vs open ankle arthrodesis.

BACKGROUND: Over the last twenty years, minimally invasive ankle arthrodesis has evolved into a well-tolerated and safe procedure. It has grown in favor to open ankle arthrodesis due to shorter length of stay and fewer complications recorded. This paper aims to compare the clinical outcomes of arthroscopic vs open ankle arthrodesis at 24-months followup. METHODS: From 2004 to 2015, we reviewed a prospectively collected database in a tertiary hospital foot and ankle registry. 28 feet that underwent arthroscopic ankle arthrodesis were matched to 56 feet that underwent open ankle arthrodesis for age, sex and body mass index (BMI). Visual analogue scale (VAS) scores, American Orthopaedic Foot & Ankle Society (AOFAS) Ankle-hindfoot Scores and Short Form Health Survey (SF-36) were obtained to assess clinical outcomes. These parameters were collected before surgery, at 6months and 24months after surgery. RESULTS: The arthroscopic group demonstrated significant less pain in the perioperative period (arthroscopic: 1.9±1.2, open: 3.8±1.1, p<0.001) and shorter length of hospitalization stay (arthroscopic: 2.1±0.7 open: 3.5±1.7, p<0.001). Patients who underwent arthroscopic ankle arthrodesis also reported a higher SF-36 score on physical functioning at 6months (arthroscopic: 58.4±27.1, open: 47.1±24.0, p<0.05) and higher AOFAS Ankle-hindfoot Scale score at 24-months (arthroscopic: 78.9±18.9, open: 68.9±24.7, p<0.05). There were no postoperative complications in the arthroscopic group but 11 in the open group, including 9 which required followup operations. There was no significant difference in length of operative procedure between both groups. CONCLUSIONS: We conclude that the arthroscopic group displayed better clinical outcomes compared to the open group at the 24months followup. The advantages of arthroscopic ankle arthrodesis include significantly less perioperative pain, higher AOFAS Ankle-hindfoot scores at 24months, shorter length of stay, fewer postoperative complications and followup operations. LEVEL OF EVIDENCE: Level III, retrospective comparative series.

Lateral versus central tendon-splitting approach to insertional Achilles tendinopathy: a retrospective study.

INTRODUCTION: This study aimed to compare operative outcomes between the lateral approach (LA) and the central approach (CA) to insertional Achilles tendinopathy (IAT). METHODS: We retrospectively reviewed patients who underwent surgical treatment for IAT using the LA or CA. Patients' demographic data, postoperative complications and satisfaction rate were reviewed. Clinical outcomes were prospectively assessed preoperatively, at three months postoperatively and at the last visit, including patients' visual analogue scale (VAS) scores for pain, American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Scale scores and 36-item Short Form Health Survey (SF-36) scores. RESULTS: There were 39 patients in the LA group and 32 in the CA group. In each group, average VAS and AOFAS Scale scores improved significantly. SF-36 scores improved in most parameters. No significant difference in baseline score; average AOFAS Scale score at each visit; and mean VAS score preoperatively and at last visit; satisfaction rate; and overall complication rate were observed between the groups. The mean VAS score in the LA group at postoperative three months was significantly lower than that in the CA group (2.7 ± 2.5 vs. 4.4 ± 3.0; p = 0.016). There were significantly more cases of delayed wound healing in the LA group than in the CA group (2.6% vs. 15.6%; p = 0.049). CONCLUSION: Both approaches had comparable outcomes for IAT in terms of functional improvement, pain relief, overall enhancement of patients' health condition and overall postoperative complication rate. The LA provided better short-term pain relief and reduced delayed wound healing compared with the CA.

The effect of gender in hallux valgus surgery. A propensity score matched study.

BACKGROUND: Males and females who undergo hallux valgus (HV) surgery have different expectations. METHODS: Data from 439 patients, with 26 males, were prospectively collected between 2007-2015. Propensity score matching (PSM) of one male to two females was performed using logistic regression of six variables to minimize selection bias. Hallux visual analogue scale (VAS) scores, AOFAS scores, SF-36, satisfaction and expectation scores were analysed at two years. RESULTS: There were no significant differences in patient demographics after PSM. At two years, males and females attained similar VAS and AOFAS scores but males had significantly lower SF-36 general health score (males 68.7, females 79.3). 26.9% of males and 21.2% of females were not satisfied after surgery. Higher proportion of males did not have their expectations fulfilled (males 19.2%, females 5.8%) although this was not statistically significant. CONCLUSIONS: Both genders attain similar outcome at two years. There is a trend towards lower expectation fulfilment in males after surgery.

Clinical and radiological outcomes of concomitant endoscopic gastrocnemius release with scarf osteotomy.

BACKGROUND: Studies showed patients with hallux valgus also have tight gastrocnemius concomitantly. This study aims to investigate (1) prevalence of tight gastrocnemius in symptomatic hallux valgus (2) clinical and radiological outcomes of concomitant endoscopic gastrocnemius release with scarf osteotomy. METHODS: Between January 2011 to December 2013, 224 patients underwent hallux valgus surgery were evaluated. They were categorized into 2 groups: scarf osteotomy (n=195), scarf and endoscopic gastrocnemius release (combine, n=29). Clinical outcome measures assessed included VAS, AOFAS Hallux MTP-IP and SF-36 scores. Radiological outcomes included HVA, IMA, HVI and TSP. All patients were prospectively followed up for 6 and 24 months. RESULTS: The prevalence of ipsilateral gastrocnemius tightness in symptomatic hallux valgus is 12.9%. No significant difference in preoperative clinical outcomes between the two groups (all p>.05). Although AOFAS was 6±2 points poorer in the combine group compared to the scarf group at 6 months follow up (p=0.021), at 24 months, all clinical outcomes were comparable between the two groups (all p>0.05). Significant difference in the HVA change between the groups were observed but comparable radiological outcomes in IMA, TSP and HVI at 24 months follow up. CONCLUSIONS: We conclude clinical and radiological outcomes of concomitant endoscopic gastrocnemius release and scarf osteotomy are comparable with scarf osteotomy alone at 24 months.

Endoscopic Plantar Fasciotomy vs Open Radiofrequency Microtenotomy for Recalcitrant Plantar Fasciitis.

BACKGROUND: Although usually self-limiting, around 10% of patients develop recalcitrant plantar fasciitis despite conservative treatment. In such cases, operative intervention can be offered. Traditionally, plantar fasciotomy has been the treatment of choice, but recently, there has been a push for more minimally invasive approaches. Radiofrequency microtenotomy has also been increasingly used as a treatment option. In this study, we compare the outcomes of endoscopic plantar fasciotomy and open radiofrequency microtenotomy. METHODS: Patients treated in our institution with either procedure between 2007 and 2015 were included and interviewed at baseline and 3 months, 6 months, and 12 months postoperatively using the American Orthopaedic Foot & Ankle Society (AOFAS) and 36-item Medical Outcomes Short Form (SF-36) questionnaires. They were asked questions to evaluate their expectation and satisfaction postoperatively. Demographic and clinicopathological data were prospectively collected from clinical charts and electronic records. RESULTS: There was no difference in either treatment arms preoperatively and an overall improvement in all functional outcomes postoperatively. However, patients who had endoscopic plantar fasciotomy fared better at 3 months compared to patients who underwent open microtenotomy with the visual analog score component of the AOFAS hindfoot score (HINDVAS) and the social functioning and role-functioning-emotional reaching statistical significance ( P = .027, P = .03, and P = .03, respectively). There was no difference in functional outcomes at 6 or 12 months postoperatively. CONCLUSION: Endoscopic plantar fasciotomy was associated with an earlier improvement in functional outcome in our study. However, both treatments had equivalent outcomes at 1-year follow-up, suggesting that either method is reasonable in the treatment of chronic plantar fasciitis. LEVEL OF EVIDENCE: Level III, comparative study.

Clinical and Radiological Outcomes Comparing Percutaneous Chevron-Akin Osteotomies vs Open Scarf-Akin Osteotomies for Hallux Valgus.

BACKGROUND: Minimally invasive surgeries have gained popularity due to less soft tissue trauma and better wound healing. To date, limited studies have compared the outcomes of percutaneous and open osteotomies. This study aims to investigate the clinical and radiological outcomes of percutaneous chevron-Akin osteotomies vs open scarf-Akin osteotomies at 24-month follow-up. METHOD: We reviewed a prospectively collected database in a tertiary hospital hallux valgus registry. Twenty-nine feet that underwent a percutaneous technique were matched to 58 feet that underwent open scarf and Akin osteotomies. Clinical outcome measures assessed included visual analog scale (VAS) scores, American Orthopaedic Foot & Ankle Society Hallux Metatarsophalangeal-Interphalangeal score (AOFAS Hallux MTP-IP), and Short Form 36 (SF-36) Health Survey. Radiological outcomes included hallux valgus angle (HVA) and intermetatarsal angle (IMA). All patients were prospectively followed up at 6 and 24 months. RESULTS: Both groups showed comparable clinical and radiological outcomes at the 24-month follow-up. However, the percutaneous group demonstrated less pain in the perioperative period ( P < .001). There were significant differences in the change in HVA between the groups but comparable radiological outcomes in IMA at the 24-month follow-up. The percutaneous group demonstrated shorter length of operation ( P < .001). There were no complications in the percutaneous group but 3 wound complications in the open group. CONCLUSIONS: We conclude that clinical and radiological outcomes of third-generation percutaneous chevron-Akin osteotomies were comparable with open scarf and Akin osteotomies at 24 months but with significantly less perioperative pain, shorter length of operation, and less risk of wound complications. LEVEL OF EVIDENCE: Level III, retrospective comparative series.

Surgical Correction of Haglund's Triad Using a Central Tendon-Splitting Approach: A Retrospective Outcomes Study.

We evaluated the surgical outcomes of Haglund's triad using a central tendon-splitting approach, with Achilles tendon partial detachment and debridement, excision of the retrocalcaneal bursa, resection of Haglund's prominence, and reattachment of the Achilles tendon. The medical records of 22 patients (22 heels) who had undergone surgical correction of Haglund's triad from January 2010 to December 2015 were reviewed retrospectively. The visual analog scale pain score, American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot scale score, and 36-item Short-Form Health Survey physical and mental component scores were prospectively collected preoperatively, 6 months postoperatively, and at the last visit. The scores of a subjective question involving satisfaction were prospectively collected at the last visit. Possible risk factors were also evaluated. We reviewed the data from 12 females and 10 males, with the mean age of 59.2 ± 7.3 years and a mean follow-up duration of 15.1 ± 4.6 months. Significant improvement was found in the mean visual analog scale pain score, average American Orthopaedic Foot and Ankle Society Ankle-Hindfoot scale score, and 36-item Short-Form Health Survey physical component scale score. The overall satisfaction rate was 77.3% (17 of 22). Postoperative complications included 2 cases of delayed wound healing and 1 case of sensation loss over the heel wound. No Achilles tendon rupture or wound infection developed. Gender and body mass index did not affect the surgical outcomes. The surgical technique we used for Haglund's triad provided effective pain relief, function improvement, and overall enhancement of patients' health condition. More research is required to further evaluate the outcomes of our surgical approach to treat Haglund's triad and the possible risk factors.

Minimal Clinically Important Differences for American Orthopaedic Foot & Ankle Society Score in Hallux Valgus Surgery.

BACKGROUND: The American Orthopaedic Foot & Ankle Society (AOFAS) score is one of the most common and adapted outcome scales in hallux valgus surgery. However, AOFAS is predominantly physician based and not patient based. Although it may be straightforward to derive statistical significance, it may not equate to the true subjective benefit of the patient's experience. There is a paucity of literature defining MCID for AOFAS in hallux valgus surgery although it could have a great impact on the accuracy of analyzing surgical outcomes. Hence, the primary aim of this study was to define the Minimal Clinically Important Difference (MCID) for the AOFAS score in these patients, and the secondary aim was to correlate patients' demographics to the MCID. METHODS: We conducted a retrospective cross-sectional study. A total of 446 patients were reviewed preoperatively and followed up for 2 years. An anchor question was asked 2 years postoperation: "How would you rate the overall results of your treatment for your foot and ankle condition?" (excellent, very good, good, fair, poor, terrible). The MCID was derived using 4 methods, 3 from an anchor-based approach and 1 from a distribution-based approach. Anchor-based approaches were (1) mean difference in 2-year AOFAS scores of patients who answered "good" versus "fair" based on the anchor question; (2) mean change of AOFAS score preoperatively and at 2-year follow-up in patients who answered good; (3) receiver operating characteristic (ROC) curves method, where the area under the curve (AUC) represented the likelihood that the scoring system would accurately discriminate these 2 groups of patients. The distribution-based approach used to calculate MCID was the effect size method. There were 405 (90.8%) females and 41 (9.2%) males. Mean age was 51.2 (standard deviation [SD] = 13) years, mean preoperative BMI was 24.2 (SD = 4.1). RESULTS: Mean preoperative AOFAS score was 55.6 (SD = 16.8), with significant improvement to 85.7 (SD = 14.4) in 2 years ( P value < .001). There were no statistical differences between demographics or preoperative AOFAS scores of patients with good versus fair satisfaction levels. At 2 years, patients who had good satisfaction had higher AOFAS scores than fair satisfaction (83.9 vs 78.1, P < .001) and higher mean change (30.2 vs 22.3, P = .015). Mean change in AOFAS score in patients with good satisfaction was 30.2 (SD = 19.8). Mean difference in good versus fair satisfaction was 7.9. Using ROC analysis, the cut-off point is 29.0, with an area under the curve (AUC) of 0.62. Effect size method derived an MCID of 8.4 with a moderate effect size of 0.5. Multiple linear regression demonstrated increasing age (ß = -0.129, CI = -0.245, -0.013, P = .030) and higher preoperative AOFAS score (ß = -0.874, CI = -0.644, -0.081, P < .001) to significantly decrease the amount of change in the AOFAS score. CONCLUSION: The MCID of AOFAS score in hallux valgus surgery was 7.9 to 30.2. The MCID can ensure clinical improvement from a patient's perspective and also aid in interpreting results from clinical trials and other studies. LEVEL OF EVIDENCE: Level III, retrospective comparative series.

Incidence of postoperative wound infections after open tendo Achilles repairs.

INTRODUCTION: Tendo Achilles (TA), which is the confluence of the gastrocnemius and soleus muscles, is one of the most commonly injured tendons. The surgical repair of TA ruptures is associated with a significant risk of infection. This study examined several factors (i.e. gender, age, body mass index, history of diabetes mellitus, steroid use, acute or chronic TA injuries, type of surgical incision and type of sutures used) that may be associated with postoperative wound infection after open TA repair. METHODS: This was a retrospective study involving 60 patients who underwent open TA repair over an 18-month period. Patients who had prior TA surgery or open TA injuries, or who needed soft tissues flaps were excluded. RESULTS: Among the patients, 7 (11.7%) developed superficial wound infections that were successfully treated with oral antibiotics, while 3 (5.0%) developed deep wound infections that required at least one debridement procedure. No significant association was found between the risk of postoperative wound infection and gender, age, the presence of diabetes mellitus, acute or chronic ruptures, site of surgical incision and type of deep or superficial sutures used. CONCLUSION: While diabetes mellitus and age did not appear to be associated with postoperative wound infections after open TA repair, obese patients were found to be two times more likely to develop a wound infection than normal-weight patients. The incidence of superficial wound infections in this study was similar to previously published results (11.7% vs. 8.2%-14.6%), but the incidence of deep infections was higher (5% vs. 1%-2%).

Can tranexamic acid and hydrogen peroxide reduce blood loss in cemented total knee arthroplasty?

INTRODUCTION: The use of tourniquet in total knee arthroplasty (TKA) has resulted in negligible intra-operative blood loss but notable post-operative blood loss, creating the ideal scenario for using topical haemostatic agents intra-operatively. Recently, medical adjuvants including tranexamic acid (TXA) and hydrogen peroxide (H2O2) have been introduced. The aim of this study was to evaluate the effectiveness of intra-articular TXA and H2O2 in reducing blood loss during TKA. MATERIALS AND METHODS: Fifty patients, who underwent a primary TKA with 1,500 mg of intra-articular TXA between May 2011 and December 2011, were compared with two matching cohorts of 50 patients each who underwent TKA with 100 ml of 3 % H2O2 wash and TKA without any TXA or H2O2. All surgeries were performed by two senior surgeons. The total blood loss was calculated by the hemoglobin balance method. RESULTS: The pre-operative serum hemoglobin levels were 13.1 ± 1.3, 13.1 ± 1.3 and 13.0 ± 1.2 g/dl (p > 0.05); while the drop in serum hemoglobin levels post-operatively was 2.0 ± 0.7, 2.4 ± 0.9 and 2.7 ± 0.8 g/dl for the TXA, H2O2 and Control groups, respectively (p < 0.001). The total amount of blood loss was 596 ± 449, 710 ± 279 and 760 ± 228 ml, respectively (p = 0.046). There was no difference in the duration of surgery between the three groups (p > 0.05). CONCLUSIONS: This study showed that intra-articular TXA reduced blood loss during TKA without significantly increasing the duration of surgery. We cannot justify H2O2 wash as an alternative to intra-articular TXA to reduce blood loss during TKA.

Tibiotalocalcaneal arthrodesis in a Singaporean hospital.

PURPOSE: To report 18 patients who underwent tibiotalocalcaneal arthrodesis using a retrograde intramedullary nail or cannulated screws. METHODS: 10 men and 8 women (19 ankles) aged 36 to 70 (mean, 52) years underwent tibiotalocalcaneal arthrodesis using a retrograde intramedullary nail (n=13) or cannulated screws (n=6). Indications for arthrodesis were severe cavovarus deformity secondary to polio or charcot-marie-tooth disease (n=7), severe osteoarthritis in the ankle and subtalar joints (n=6), Charcot joint deformity (n=3), failed fusion procedures (n=2), and foot drop secondary to T12 tumour surgery (n=1). The visual analogue score (VAS) for pain was assessed, as were the American Orthopaedic Foot and Ankle Society (AOFAS) scores (for subjective and objective pain, function, and stability of the ankle), short form 36 (SF-36), and patient expectation and satisfaction scores. RESULTS: The mean follow-up period was 35.6 (range, 11-144) months. 13 of 18 patients returned for assessment of scores. 18 of the 19 ankles achieved fusion after a mean period of 5.9 (range, 3-11) months. The mean VAS scores for pain, AOFAS scores, and SF-36 scores all improved. 11 patients had good-to-excellent satisfaction and expectation scores. Two patients had severe wound infections and underwent implant removal (after bone union), debridement, and intravenous antibiotic therapy. Two other patients had superficial wound infections. One patient with retrograde intramedullary nailing had a pseudoarthrosis and underwent implant removal, redebridement, re-autografting, and cannulated screw fixation. Fusion was achieved subsequently. CONCLUSION: Tibiotalocalcaneal arthrodesis improved the pain score and quality of life, despite a high risk of complications.

Chronic Achilles tendon rupture treated with two turndown flaps and flexor hallucis longus augmentation - two-year clinical outcome.

INTRODUCTION: Both conservative and operative management have been described in the literature for the management of chronic Achilles tendon ruptures with surgical management generally having more favourable results. In our institution, the favoured reconstructive technique was the use of 2 turndown tendon fl aps fashioned from the proximal Achilles tendon augmented by a tenomyodesis of the flexor hallucis longus. The purpose of this study was to assess the clinical outcome of all patients who underwent this procedure. MATERIALS AND METHODS: From the records, a total of 9 patients underwent the above-mentioned procedure of whom 6 patients had complete data collection sets [including SF-36, Visual Analogue Scale (VAS), American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot scores, ankle range of motion (ROM), presence of residual symptoms and complications] at 2 years of follow-up. RESULTS: Our results showed an average AOFAS Ankle-Hindfoot score of 94.2, VAS of 0 in all but 1 patient, and generally high scores (75-96) in all 8 domains of the SF-36 questionnaire. Patient satisfaction was also rated to be high from the surgical procedure. CONCLUSION: We submit that the procedure adopted at our institution is able to reproduce satisfactory results with low morbidity in patients with this challenging condition.

Radiofrequency coblation for chronic foot and ankle tendinosis.

PURPOSE: To evaluate outcomes of radiofrequency coblation for chronic tendinosis of the foot and ankle tendons. METHODS: Records of 7 men and 8 women (16 feet) aged 27 to 65 years who underwent radiofrequency coblation for chronic tendinosis (combined with other procedures for other pathology) of the Achilles, posterior tibial, and peroneal tendons were retrospectively reviewed. The visual analogue scale (VAS) for pain status, the Short Form (SF-36) questionnaire for quality of life, and the American Orthopaedic Foot and Ankle Society (AOFAS) scores for functional status of the patients were determined pre- and post-operatively. RESULTS: All patients reported significant reduction in pain at 3 months, with more than 63% attaining VAS scores of 0 at 6 months. AOFAS scores were significantly improved at both 3 and 6 months. Most components of SF-36 scores improved at 6 months except those for general health and role emotional; only those for bodily pain improved significantly. At postoperative month 3 and 6 respectively, 93 and 100% of the patients had their expectations met, whereas 93 and 88% had good-to-excellent satisfaction. There were no major complications. CONCLUSIONS: Radiofrequency coblation for chronic tendinosis of the foot and ankle achieves good short-term outcomes and pain relief. It may be combined with other procedures for maximal benefit.