232 ‒ Shoulder, elbow, wrist, and hand: diagnosis, treatment, and surgery of the upper extremities

Key provocative tests described: external rotation resistance in neutral (subscapularis drop test), supraspinatus isolation in the scapular plane, active compression test (O'Brien's) for SLAP tears, impingement sign (Hawkins-Kennedy), Speed's test for biceps tendon, and glenohumeral translation assessment. Glenohumeral abduction must be isolated by holding the scapula fixed to avoid falsely normal results in a frozen shoulder compensating with scapulothoracic motion.

Alton injects from the posterior approach to avoid the pain-sensitive anterior brachial plexus and reduce patient anxiety (patients cannot see the needle). The immediate diagnostic response is notable: frozen shoulder pain and restriction dramatically improve within 10 seconds of local anesthetic instillation. If this response does not occur, the diagnosis should be reconsidered.

Key case examples: Alton repaired his 86-year-old father's 2.5-of-4-muscle traumatic tear under regional anesthesia with a 6-anchor repair; the father returned to swimming. Conversely, a 60-year-old tennis player who stopped playing and has zero pain doing yoga does not need surgery — but is counseled that the tear will not shrink, and symptoms may emerge with aging. The practical algorithm: if a patient's stated goal includes any activity the tear prevents, operate. If the patient is functionally content and physiologically realistic about the future, observe.

Dry needling (without injection) is plausibly effective by recruiting macrophage-mediated debridement of degenerative tendon tissue — similar biologic mechanism to fenestration. Attia's personal case: six months of stubborn lateral epicondylitis resolved with a single injection after he had already corrected the underlying scapular mechanics that were the root cause of the overload. The two-layer insight: injection manages the acute fire; biomechanical correction prevents re-ignition.

The definitive clinical test is direct thumb pressure over the transverse carpal ligament reproducing numbness/tingling in the median distribution — more sensitive and specific than Phalen's or Tinel's signs. Pregnancy-associated CTS (third trimester edema) typically resolves postpartum without surgery. Double-crush syndrome (simultaneous cervical and wrist compression of the same nerve) requires treating both levels — carpal tunnel release alone will reduce but not eliminate symptoms when the cervical component is present.

The aesthetic bump from a healed Type 3 non-operatively is the only long-term functional concern for recreational patients — heavy overhead lifting, high bar squats, and flies may be aggravated but general function is preserved. Competitive athletes who need to return in 3–4 weeks are the primary operative candidates.

The 6-week early-presentation window with 75% cure rate is the key triage decision: patients who present promptly have a high likelihood of injection cure and can avoid surgery entirely. Patients who wait months typically have a hardened, chronic fibrotic process that injections cannot adequately penetrate.

Attia draws the parallel to lumbar disc herniations — radiologists faithfully report every finding, but a patient without neck or shoulder symptoms and a clean exam needs to understand that the MRI finding may be irrelevant. Attia says 'I almost wish when I give you an MRI for another reason I could ask the radiologist not to show me your spine.' The Yamaguchi WashU data changed how many surgeons advise watchful waiting — but it also changed the conversation about when to act: a symptomatic large tear in an 86-year-old man who cannot lift his arm (Alton's own father) gets repaired, not ignored, because function loss over 9 years matters more than operative risk.

Attia notes that a PRP injection for tennis elbow frequently causes a painful flare reaction for one to two weeks, after which patients often present to him requesting cortisone anyway. The same caution applies to rotator cuff repairs and Tommy John — while the growth-factor concept is mechanistically plausible, it has not been validated by adequately powered prospective trials. He does not categorically dismiss PRP for all indications but is explicit that the tennis-elbow data is damning for that specific application.

Attia describes a months-long personal experiment: 10-finger pull-ups, then 4-finger (removing pinky) noticeably harder, then 3-finger order-of-magnitude harder, then 2-finger essentially impossible. Alton explains that the ulnar nerve supplies almost all the intrinsic muscles of the hand, and that ulnar-nerve-out with intact median nerve produces far weaker grip than the reverse. This has clinical applications in cubital tunnel syndrome management — patients who golf, play instruments, or do heavy manual work may have subtle grip deterioration before frank numbness/tingling appears.

Alton explains the mechanism of apparent velocity gains: pitchers with a partial UCL tear compensate by overthrowing from the shoulder, which causes shoulder problems; or they simply have never been able to generate full velocity because the ligament was already compromised. After reconstruction, the intact ligament restores full biomechanical loading. He emphasizes that a non-elite recreational thrower would never notice UCL absence — recreational-level throwing does not stress the ligament enough for its absence to be perceptible.

Alton explains that the procedure creates a pseudarthrosis — the arthritic surface is excised, a space is created, and the palmaris longus tendon is rolled up and placed in the space as a biologic spacer, then secured with the remaining tendon wrapped around the joint. Success rates are very high. The palmaris longus is absent in 15% of the population but other expendable wrist flexors serve the same purpose. The key insight is that tendon-based reconstruction outperforms metal or plastic implants in this joint specifically because of its multi-directional loading patterns.

The principle is applied throughout the episode: the 48-year-old with early arthritis who was talked out of shoulder replacement and returned 15 years later with a pristine joint; Attia's own 30-year history of subluxations where he delayed surgery until anatomic degeneration was visible; the violinist who had unnecessary labral tightening. The economic incentive problem is discussed frankly: RVU-based promotion metrics at academic medical centers and fee-for-service payment create systematic pressure toward more procedures.