This practice set contains high-yield board review questions covering key concepts in 5. Sports Medicine. Each clinical scenario is designed to test your diagnostic and management skills relevant to this subspecialty.
Question 4761
Topic: Shoulder & Hip Sports
A 19-year-old collegiate gymnast presents with bilateral shoulder pain and a sensation of the shoulders 'slipping out' during her routines. She denies any specific traumatic event. On examination, she has 3+ sulcus signs bilaterally and positive apprehension tests that spontaneously reduce when she relaxes. Radiographs and MRI are unremarkable. What is the most appropriate initial management?
Correct Answer & Explanation
. Supervised rehabilitation focusing on periscapular and rotator cuff strengthening
Explanation
This patient presents with classic signs of multidirectional instability (MDI) of the shoulder, characterized by generalized laxity, atraumatic onset, and bilateral involvement. The cornerstone and first-line treatment for MDI is an extensive, supervised physical therapy program focusing on strengthening the dynamic stabilizers of the shoulder (the rotator cuff and periscapular musculature). Operative management is reserved only for patients who fail a prolonged trial (usually >6 months) of nonoperative management.
Question 4762
Topic: Knee Sports
A surgeon is planning a medial patellofemoral ligament (MPFL) reconstruction for a 17-year-old female with recurrent lateral patellar dislocations. To achieve anatomic reconstruction and isometric graft behavior, the femoral tunnel must be placed at Schöttle's point. Where is this landmark located radiographically on a true lateral view of the distal femur?
Correct Answer & Explanation
. Anterior to the posterior femoral cortical line and proximal to the Blumensaat line
Explanation
Schöttle's point defines the anatomic femoral origin of the MPFL. On a true lateral radiograph, it is found 1 mm anterior to the posterior cortex line, 2.5 mm distal to the posterior origin of the medial femoral condyle, and proximal to the level of the posterior aspect of Blumensaat's line. Anatomically, this point is located in the saddle between the medial epicondyle and the adductor tubercle.
Question 4763
Topic: Shoulder & Hip Sports
A 28-year-old male hockey player presents with chronic, deep groin pain exacerbated by deep hip flexion and internal rotation. An AP pelvis radiograph demonstrates a 'crossover sign.' This radiographic finding is most indicative of which of the following pathomorphologies?
A crossover sign is present on an AP pelvis radiograph when the anterior rim of the acetabulum crosses the line of the posterior rim. This is indicative of focal or global acetabular retroversion, which leads to over-coverage of the femoral head and Pincer-type femoroacetabular impingement (FAI). Cam impingement is associated with an aspherical femoral head (decreased head-neck offset) and a high alpha angle.
Question 4764
Topic: 5. Sports Medicine
A 12-year-old boy complains of intermittent left knee pain over the past 3 months. Radiographs reveal an osteochondritis dissecans (OCD) lesion on the lateral aspect of the medial femoral condyle. MRI confirms the presence of the lesion but demonstrates no high T2 signal (fluid) between the fragment and the underlying bone. The physes are widely open. What is the most appropriate initial management?
Correct Answer & Explanation
. Activity restriction and protected weight-bearing for 3 to 6 months
Explanation
This patient has a stable osteochondritis dissecans (OCD) lesion (no fluid behind the lesion on MRI) and is skeletally immature (open physes). The most appropriate initial management for stable OCD lesions in children and younger adolescents is a trial of nonoperative treatment, consisting of activity modification, avoidance of impact sports, and potentially a period of non-weight-bearing or protected weight-bearing. Surgical intervention (e.g., drilling, fixation) is indicated if the lesion is unstable or fails prolonged conservative management.
Question 4765
Topic: 5. Sports Medicine
A 45-year-old male presents to the emergency department after feeling a 'pop' in his knee while landing from a jump playing basketball. He has a large knee effusion and is unable to perform a straight leg raise. A lateral radiograph of the knee is obtained, revealing patella baja (a low-riding patella) with an Insall-Salvati ratio of 0.6. What is the most likely diagnosis?
Correct Answer & Explanation
. Quadriceps tendon rupture
Explanation
A quadriceps tendon rupture classically results in patella baja (low-riding patella) because the intact patellar tendon tethers the patella to the tibial tubercle, while the superior pull of the quadriceps muscle is lost. An Insall-Salvati ratio < 0.8 confirms patella baja. In contrast, a patellar tendon rupture results in patella alta (high-riding patella, Insall-Salvati ratio > 1.2) due to the unopposed proximal pull of the intact quadriceps.
Question 4766
Topic: 5. Sports Medicine
A 28-year-old competitive weightlifter feels a sudden tearing sensation and severe pain in his anterior axillary fold while attempting a one-rep max bench press. Examination reveals extensive ecchymosis over the anterior arm and chest, with a visible loss of the normal anterior axillary contour. MRI confirms a complete rupture of the sternal head of the pectoralis major tendon at its humeral insertion. What is the recommended treatment for this patient?
Correct Answer & Explanation
. Early operative repair to restore the anatomical footprint
Explanation
Pectoralis major ruptures most commonly occur at the insertion of the sternal head onto the humerus during eccentric loading (e.g., bench press). In young, active individuals and athletes, early operative repair (within the first few weeks) is the gold standard. Operative repair yields significantly superior functional outcomes, better return to sport strength, and corrects the cosmetic deformity compared to nonoperative management. Delayed repair is technically more demanding due to tendon retraction and scarring.
Question 4767
Topic: Knee Sports
A 45-year-old active female reports a 'pop' in the posterior aspect of her knee while squatting, followed by acute posterior knee pain and mild effusion. Weight-bearing radiographs show no significant osteoarthritis. MRI reveals a radial tear at the posterior horn of the medial meniscus near its tibial attachment, accompanied by a 'ghost sign' on sagittal sequences and 4 mm of medial meniscal extrusion. What is the primary biomechanical consequence if this injury is left untreated?
Correct Answer & Explanation
. Loss of meniscal hoop stresses leading to altered contact pressures equivalent to a total meniscectomy
Explanation
A posterior medial meniscal root tear results in a complete loss of meniscal hoop stresses. Biomechanically, this failure of the root attachment is equivalent to a total meniscectomy. It leads to decreased contact area and significantly increased peak contact pressures in the medial compartment, which rapidly progresses to early-onset osteoarthritis and subchondral insufficiency fractures if not surgically repaired.
Question 4768
Topic: Shoulder & Hip Sports
A 42-year-old recreational weightlifter complains of persistent deep anterior shoulder pain, particularly during bench press and biceps curls. Physical examination reveals a positive O'Brien test that is relieved when the test is repeated with the forearm in supination, and distinct tenderness in the bicipital groove. MRI reveals a Type II SLAP lesion with concomitant severe tenosynovitis and partial tearing of the long head of the biceps tendon. What is the most appropriate definitive surgical management for this patient?
Correct Answer & Explanation
. Biceps tenodesis with debridement of the SLAP lesion
Explanation
In patients older than 35-40 years, especially those with concomitant pathology of the long head of the biceps (LHB) tendon, biceps tenodesis combined with SLAP debridement provides more reliable pain relief and functional improvement. SLAP repair in this older demographic is associated with higher rates of postoperative stiffness, persistent pain, and subsequent revision surgery.
Question 4769
Topic: Shoulder & Hip Sports
A 19-year-old elite hockey player presents with gradual onset of deep groin pain exacerbated by hip flexion and internal rotation. Radiographs demonstrate a crossover sign and a prominent ischial spine sign. The alpha angle is measured at 45 degrees. Which of the following best describes the underlying morphologic abnormality and its typical associated labral and chondral pathology?
Correct Answer & Explanation
. Pincer impingement with labral crushing and contrecoup posteroinferior chondral injury
Explanation
A crossover sign and prominent ischial spine sign are radiographic markers of acetabular retroversion, which constitutes pincer-type femoroacetabular impingement. An alpha angle of 45 degrees is normal, ruling out cam morphology. Pincer impingement typically causes a linear compression (crushing) mechanism of the labrum and can lead to contrecoup (posteroinferior) chondral lesions due to a levering mechanism of the femoral head against the acetabular rim.
Question 4770
Topic: 5. Sports Medicine
A 16-year-old female high school soccer player with generalized ligamentous laxity (Beighton score 7/9) undergoes primary anterior cruciate ligament (ACL) reconstruction. Considering her age, sex, and hyperlaxity profile, which of the following graft choices is associated with the lowest risk of graft failure?
Correct Answer & Explanation
. Bone-patellar tendon-bone (BTB) autograft
Explanation
Young, active female athletes with generalized ligamentous laxity are at a significantly higher risk for ACL graft failure. The literature consistently demonstrates that allografts have an unacceptably high failure rate in this demographic. Furthermore, hamstring autografts have been shown to have a higher failure rate compared to bone-patellar tendon-bone (BTB) autografts in young, highly active patients, particularly those with underlying hyperlaxity. BTB autograft provides rigid bone-to-bone healing and is favored to minimize re-rupture risk in this high-risk population.
Question 4771
Topic: Shoulder & Hip Sports
A 23-year-old rock climber presents with recurrent anterior shoulder instability. An MRI arthrogram shows an anteroinferior labral tear and a large posterolateral humeral head defect (Hill-Sachs lesion). A 3D CT scan reveals 12% anterior glenoid bone loss. On dynamic arthroscopic evaluation, the Hill-Sachs lesion 'engages' the anterior glenoid rim when the arm is placed in abduction and external rotation. Which of the following is the most appropriate surgical intervention?
Correct Answer & Explanation
. Arthroscopic Bankart repair with Remplissage
Explanation
The patient has recurrent anterior instability with an 'engaging' Hill-Sachs lesion and subcritical glenoid bone loss (12%, defined typically as < 15-20%). While an isolated Bankart repair has a high failure rate for engaging lesions, adding a Remplissage (infraspinatus tenodesis and posterior capsulodesis into the Hill-Sachs defect) converts the intra-articular defect to an extra-articular one, thereby preventing engagement. Since glenoid bone loss is subcritical, a Latarjet procedure is not strictly indicated, making Bankart with Remplissage the most appropriate treatment.
Question 4772
Topic: Knee Sports
A 24-year-old male presents 6 months after an anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone autograft. He complains of pain at the anterior aspect of the knee during terminal extension. Physical examination reveals a 15-degree extension lag and a palpable, audible clunk when the knee is passively brought into full extension. Sagittal MRI shows a nodular soft-tissue mass anterior to the ACL graft. What is the most likely diagnosis?
A cyclops lesion is a form of localized anterior arthrofibrosis that typically presents weeks to months following ACL reconstruction. It is characterized by loss of terminal extension, an audible or palpable clunk near full extension, and pain. MRI typically demonstrates a localized nodular fibrovascular mass anterior to the ACL graft in the intercondylar notch. Arthroscopic excision is the treatment of choice and usually restores full extension.
Question 4773
Topic: Shoulder & Hip Sports
A 25-year-old professional hockey player presents with chronic groin pain that worsens with prolonged sitting and deep hip flexion. Physical examination reveals a positive FADIR test. Radiographs demonstrate a pistol grip deformity of the proximal femur and an alpha angle of 65 degrees. Which of the following is the primary pathophysiologic mechanism for his intra-articular pathology?
Correct Answer & Explanation
. Chondral delamination from repetitive shear forces
Explanation
The patient has Cam-type femoroacetabular impingement (FAI), characterized by an aspherical femoral head-neck junction (pistol grip deformity, alpha angle >55 degrees). During hip flexion, the aspherical portion enters the acetabulum, creating massive shear forces that lead to separation of the cartilage from the subchondral bone (chondral delamination) and subsequent labral tears, typically at the anterosuperior chondrolabral junction. Linear impaction is the mechanism for Pincer-type FAI.
Question 4774
Topic: Knee Sports
A 22-year-old collegiate football player is struck on the anteromedial aspect of his knee. He presents with lateral knee pain and a feeling of instability. Physical examination demonstrates excessive external rotation of the tibia compared to the contralateral knee when evaluated at 30 degrees of knee flexion. However, external rotation is symmetric when tested at 90 degrees of knee flexion. Which of the following structures is primarily injured?
Correct Answer & Explanation
. Fibular collateral ligament
Explanation
A positive dial test (excessive external rotation >10 degrees compared to the uninjured side) isolated to 30 degrees of flexion indicates an isolated posterolateral corner (PLC) injury. The primary structures of the PLC are the fibular collateral ligament (FCL), popliteus tendon, and popliteofibular ligament. If the dial test is positive at both 30 degrees and 90 degrees of flexion, it indicates a combined injury of the PLC and the posterior cruciate ligament (PCL).
Question 4775
Topic: Knee Sports
A 45-year-old female sustains sudden knee pain while deep squatting. An MRI is obtained, revealing a radial tear at the posterior horn of the medial meniscus, located 5 mm from its tibial attachment, accompanied by a 4 mm medial meniscal extrusion. Biomechanically, this specific injury profile is most equivalent to which of the following conditions?
Correct Answer & Explanation
. Total meniscectomy
Explanation
A meniscal root tear disrupts the circumferential hoop stresses of the meniscus, causing the meniscus to extrude radially under axial load. Biomechanical studies have demonstrated that a posterior root tear of the medial meniscus is functionally equivalent to a total medial meniscectomy in terms of decreased contact area and increased peak contact pressures in the medial compartment.
Question 4776
Topic: Knee Sports
A 13-year-old male presents with right knee pain and mechanical catching symptoms. Radiographs reveal an osteochondral lesion on the lateral aspect of the medial femoral condyle. MRI confirms the 1.5 cm lesion and demonstrates high T2 signal (fluid) interposing behind the lesion and the native subchondral bone, though the articular cartilage cap appears intact. His physes are wide open. What is the most appropriate initial surgical management?
Correct Answer & Explanation
. Arthroscopic fixation of the lesion
Explanation
The patient has juvenile osteochondritis dissecans (JOCD). While stable JOCD lesions in patients with open physes are initially treated non-operatively, this patient has an unstable lesion as evidenced by mechanical symptoms and synovial fluid behind the lesion on MRI. Because the cartilage cap is intact (salvageable), the treatment of choice is arthroscopic fixation. Drilling alone is reserved for stable lesions failing non-operative care.
Question 4777
Topic: Knee Sports
A 16-year-old female experiences an acute lateral patellar dislocation while dancing. After reduction, she is evaluated for risk factors for recurrent instability. Which of the following radiographic parameters is considered a primary major anatomic risk factor for recurrent lateral patellar dislocation?
Correct Answer & Explanation
. Insall-Salvati ratio of 1.3
Explanation
An Insall-Salvati ratio of >1.2 indicates patella alta, which is one of the most significant primary anatomic risk factors for recurrent lateral patellar instability. A normal TT-TG distance is generally < 15 mm (abnormal >20 mm). A normal sulcus angle is <145 degrees. A Caton-Deschamps ratio of 1.0 is normal.
Question 4778
Topic: Knee Sports
A 25-year-old male presents with recurrent knee instability 18 months after an anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone autograft. On physical examination, he has a positive pivot shift test but full range of motion. Radiographs demonstrate the femoral tunnel positioned too anteriorly (shallow) on the lateral femoral condyle. What is the most likely clinical consequence of an anteriorly placed femoral tunnel in ACL reconstruction?
Correct Answer & Explanation
. Graft tightness in flexion and laxity in extension
Explanation
Femoral tunnel malposition is the most common technical error leading to ACL reconstruction failure. An anteriorly (shallow) placed femoral tunnel results in a graft that becomes unphysiologically tight in flexion (often restricting flexion) and loose (lax) in extension, leading to a positive Lachman and pivot shift test. Conversely, a posteriorly placed tunnel results in a graft that is tight in extension and loose in flexion.
Question 4779
Topic: 5. Sports Medicine
A 28-year-old hockey player undergoes hip arthroscopy for a symptomatic cam-type femoroacetabular impingement and labral tear. During the establishment of the anterior portal, the surgeon uses fluoroscopy and anatomic landmarks to ensure safe trajectory. Which of the following nerves is at greatest iatrogenic risk during the placement of the anterior portal?
Correct Answer & Explanation
. Lateral femoral cutaneous nerve
Explanation
The anterior portal in hip arthroscopy is typically established at the intersection of a sagittal line drawn distally from the ASIS and a transverse line at the level of the greater trochanter. The lateral femoral cutaneous nerve (LFCN) and its branches are highly variable and are at the greatest risk of injury during the establishment of this portal. The anterolateral portal is generally considered the safest but risks the superior gluteal nerve if extended too proximally.
Question 4780
Topic: Knee Sports
A 19-year-old female presents with recurrent lateral patellar dislocations after failing 6 months of targeted physical therapy. Imaging demonstrates a normal trochlea, but a CT scan reveals a tibial tubercle-trochlear groove (TT-TG) distance of 22 mm and patella alta (Caton-Deschamps index 1.4). Which of the following surgical strategies is most appropriate to normalize her patellofemoral biomechanics?
Correct Answer & Explanation
. MPFL reconstruction with a medializing and distalizing tibial tubercle osteotomy
Explanation
A normal TT-TG distance is generally < 15 mm. A TT-TG distance > 20 mm in the setting of recurrent instability is an indication for a medializing tibial tubercle osteotomy (TTO) to correct the lateralized extensor mechanism. Because the patient also has significant patella alta (Caton-Deschamps index > 1.2 is abnormal), a distalizing component should be added to the osteotomy. Concurrent MPFL reconstruction is required to address the essential soft-tissue lesion of lateral patellar dislocations.
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